06/10/2015, 08:00
Dr.
Serguei Ganjour
(CEA/Saclay/IRFU)
06/10/2015, 08:20
Nuclear physics and particle physics
The discovery of a new heavy boson with a mass near 125 GeV at CERN's LHC experiments opened new horizons at Energy Frontiers. This particle is consistent with the Higgs boson predicted by the Standard Model (SM). Despite this discovery completed the SM, major questions still remain unresolved. Search for physics beyond the SM through precision measurements of the Higgs boson properties is one...
Prof.
Daniela Marcella Rebuzzi
(University of Pavia and INFN, Pavia)
06/10/2015, 08:55
Nuclear physics and particle physics
The combination of the measurements of the Higgs boson properties by the ATLAS detector
at the LHC will be presented. The results are based on 25 fb-1 of 7 TeV and 8 TeV pp
collision data collected in 2011 and 2012.
First, the measurements of the spin and parity of the observed boson will
be discussed. Secondly, the results for the signal strength of the Higgs boson
in different...
Dr.
Aldo Ianni
(LSC and INFN)
06/10/2015, 10:00
Nuclear physics and particle physics
The Canfranc Underground Laboratory in north of Spain has been in operation since 2006. The underground site has three experimental Halls and a number of facilities such as seven high purity germanium detectors for radioactivity screening, a clean room, a radon abatment system. The main research field at Canfranc is astroparticle physics. However, a feasibility study for an accelerator for...
Prof.
Marco Pallavicini
(Universita' di Genova and INFN Genova)
06/10/2015, 10:30
Nuclear physics and particle physics
The seminar will report about the activity of the INFN Scientific Commission 2, the Commission in charge of funding astroparticlle and underground physics in Italy. The focus will be, in particular, on the activities in joint collaboration between INFN and Russia.
Dr.
Gioacchino Ranucci
(INFN - MI)
06/10/2015, 11:00
Nuclear physics and particle physics
The Borexino experiment is running at the Laboratori del Gran Sasso in Italy since 2007. Its technical distinctive feature is the unprecedented ultralow background of the inner scintillating core, which is the basis of the outstanding achievements accumulated by the experiment.
In this talk, after recalling the main features of the detector, the impressive solar data gathered so far by the...
Dr.
Christian Spiering
(DESY)
06/10/2015, 11:30
Nuclear physics and particle physics
The discovery of astrophysical neutrinos has lifted a new observational window to the Universe. A new generation of detectors aims to fully opening this window. The talk will describe the corresponding IceCube results which herald a new era in neutrino astronomy. It will also give an outlook to the future detectors on the multi-cubic kilometer scale: KM3NeT in the Mediterranean Sea, GVD in...
Mr.
Evgeny Zhemchugov
(ITEP, MEPhI)
06/10/2015, 13:00
Nuclear physics and particle physics
When the Standard Model is extended with extra scalar particles, they mix to form physical mass eigenstates. One of these eigenstates is associated with the recently discovered 125 GeV Higgs boson. If one of the other eigenstates is sufficiently massive, it may decay to two 125 GeV states, and thus provide significant contribution to the $pp \to hh$ cross section which in the Standard Model is...
Dr.
Oleg smirnov
(Joint Institute for Nuclear Research)
06/10/2015, 13:00
Nuclear physics and particle physics
Details of the recent measurement of the Solar pp-neutrino flux will be reported. This measurement completes the measurement of Solar neutrino fluxes from the pp-chain of reactions in Borexino experiment. The result is in agreement with the prediction of the Standard Solar Model and the MSW/LMA oscillation scenario.
Mr.
Renat Ibragimov
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
06/10/2015, 13:00
Methods of experimental physics
**«Research of work stability of diamond detectors that used in SCR DDIR»**
------------------------------------------------------------------------
Influence of various factors to stability of ionizing radiation detectors installed in the cosmic ray spectrometer (SCR) based on diamond detectors of ionization radiation (DDIR) was studied in this work. Diamond detectors for SCR was made...
Dr.
Romain Roncin
(Laboratori Nazionali del Gran Sasso (LNGS))
06/10/2015, 13:15
Nuclear physics and particle physics
Borexino is a liquid scintillator detector primary designed to observe solar neutrinos. Due to its low background level as well as its position in a nuclear free country, Italy, Borexino is also sensitive to geo-neutrinos. Borexino is leading this interdisciplinary field of neutrino geoscience by studying electron antineutrinos which are emitted from the decay of radioactive isotopes present...
Dr.
Boris Chernyshev
(National Research Nuclear University MEPhI)
06/10/2015, 13:15
Nuclear physics and particle physics
Search for isobar-analog states of superheavy hydrogen isotopes 5-7H was performed among the high-excited states of helium isotopes 5-7He. The excited spectra were measured in stopped pion absorption by light nuclei. The experiment was performed at low energy pion channel of LANL with two-arm multilayer semiconductor spectrometer. The method of research is based on precise measurements of...
Mr.
Egor Tykmanov
(NRNU MEPhI)
06/10/2015, 13:15
Methods of experimental physics
Distinctive features of the multi-anode microchannel plate photomultiplier to be used in a Cherenkov detector are discussed. The laboratory test results obtained under irradiation of the MCP-PMT photocathode by picosecond optical laser pulses with different intensities (from single photon regime to the PMT saturation conditions) are presented.
Dr.
Stefano Davini
(Gran Sasso Science Institute)
06/10/2015, 13:30
Nuclear physics and particle physics
The detection of neutrinos emitted in the CNO reactions in the Sun is one of the
ambitious goals of Borexino Phase-II.
A measurement of CNO neutrinos would be a milestone in astrophysics, and would allow to solve serious issues in current solar models.
A precise measurement of the rate of neutrinos from the pep reaction would allow to
investigate neutrino oscillations in the MSW...
Mr.
Egor Tykmanov
(NRNU MEPhI)
06/10/2015, 13:30
Methods of experimental physics
Analysis of fast timing and trigger Cherenkov detector’s design for its use in collider experiments is presented. Several specific requirements are taken into account – necessity of the radiator’s placement as close to the beampipe as possible along with the requirement of gapless (solid) radiator’s design. Characteristics of the Cherenkov detector’s laboratory prototype obtained using a pion...
Mrs.
Larisa Korotkova
(National Research Nuclear University MEPhI)
06/10/2015, 13:30
Nuclear physics and particle physics
Search for rare cluster configuration in 14С nucleus was carried out in the correlation measurements of stopped pion absorption reaction π¯+ 14C → p + d + Х. For our analysis we took the data obtained in the experiment on the LANL accelerator (Los Alamos, USA) using the multilayer semiconductor spectrometer [1]. The analysis of the reaction was made via previously used method for the search of...
Mr.
Konstantin Vorobev
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
06/10/2015, 13:45
Methods of experimental physics
Gas mixtures based on xenon, argon, krypton, oxygen with the additive were studied. Values of the gas gain, the breakdown voltage for the straight and curved straw was studied. It was shown that in order to provide a necessary stability an addition of equal 3% oxygen is required. Safe operation range for all mixtures is up to gas gain equal 5*10^4. Tests with a real Barrel module confirmed...
Mrs.
Alina Vishneva
(DLNP JINR)
06/10/2015, 13:45
Nuclear physics and particle physics
The new limit on the electron lifetime is obtained from data of Borexino experiment.
The expected signal from the $e\rightarrow\gamma\nu$ decay mode is 256 keV photon detected in liquid scintillator.
Because of extremely low radioactive background level in Borexino detector it was possible to improve the previous measurement by two orders of magnitude.
Mr.
Roman Pritula
(MEPhI)
06/10/2015, 13:45
Nuclear physics and particle physics
Results on the measurement of the spectra of p, d, t formed in the reaction of stopped pion absorption by atomic nuclei from the wide mass number range (6 < A < 209) are presented. Phenomenological model developed by us [1, 2] had allowed to calculate contributions of cluster absorption, preequilibrium and evaporation processes in the particle formation. A-dependences of primary particles...
Mr.
Victor Atroshchenko
(NRC Kurchatov Institute)
06/10/2015, 14:00
Nuclear physics and particle physics
Atmospheric neutrinos are produced in interactions of cosmic rays with atomic nuclei in the Earth’s atmosphere. Although their flux is too low for studying in Borexino, atmospheric neutrinos act as a background for other processes.
This talk presents the theoretical expected yield of atmospheric neutrinos in Borexino for three neutrino detection reactions: νp-ES, νe-ES and inverse β-decay, as...
Denis Artemenkov
(JINR)
,
Dr.
Pavel Zarubin
(Joint Institute for Nuclear Research)
06/10/2015, 14:00
Nuclear physics and particle physics
The formation of high-multiplicity nuclear stars was observed upon irradiating nuclear track emulsions with ultrarelativistic muons [1-3]. Kinematical features studied in this exposure of nuclear track emulsions for events of the muon-induced splitting of carbon nuclei to three alpha particles are indicative of the nucleardiffraction interaction mechanism. The irradiation of track emulsions...
Prof.
Sergey Ulin
(NRNU MEPhI)
06/10/2015, 14:00
Methods of experimental physics
Xenon detector based gamma-ray spectrometer for the radioactive waste sorting complex and its characteristics are described. The results of this equipment tests and their analysis are presented.
Kahramon Mamatkulov
(JINR)
,
Dr.
Pavel Zarubin
(Joint Institute for Nuclear Research)
06/10/2015, 14:15
Nuclear physics and particle physics
Application of the nuclear track emulsion technique (NTE) in radioactivity
and nuclear fission studies is discussed. It is suggested to use a HSP-1000
automated microscope for searching for a collinear cluster tri-partition of heavy
nuclei implanted in NTE. Calibrations of α-particles and ion ranges in a novel NTE
are carried out. Surface exposures of NTE samples to a Cf-252 source...
Maria Toropova
(NRNU MEPhI, NRC Kurchatov Institute)
06/10/2015, 14:15
Nuclear physics and particle physics
Gamma-ray bursts (GRBs) are the most energetic known events in the Universe. Though gamma-ray telescopes observe about one GRB event per day, the nature of this phenomenon is not yet tottaly understood. Many theoterical models predict emission of neutrinos of all types in a wide energy range. In this talk we review experimental searches of GRB neutrinos in MeV energy range. The searches of...
Mr.
Alexander Shustov
(NRNU MEPhI)
06/10/2015, 14:15
Methods of experimental physics
Experimental results of thermal neutron detection by xenon gamma-ray spectrometers are presented. The study was performed with two devices with sensitive volumes of 0.2 and 2 liters filled with high-pressure mixture of xenon and hydrogen without neutron-capture additives. Rates of the most intensive prompt neutron-capture gamma-ray lines were simulated in order to compare them with experimental data.
Sergey Kondratenko
(no)
06/10/2015, 14:30
Methods of experimental physics
The requirements and implementations of transceivers operating at speeds up to several Gb / s and intended for use in on-board data networks are considered. It is noted the possibility of upgrading for a long time used in such networks LVDS - transceivers in order to increase the transmission speed of more than prescribed by the appropriate standard. The results of the characterization of such...
Mr.
Vladimir Khilya
(NRNU MEPhI)
06/10/2015, 14:30
Methods of experimental physics
The aim of the present work is the creation a prototype of anticoincidence system for gamma-telescope "GAMMA-400". The detector is developed on the basis of plastic scintillator and silicon photomultipliers. This work is focuses on research of the characteristics of silicon photomultipliers SiPM company SensL, type 60000. In frame of project the assembly
for measuring of the photomultiplier...
Mr.
Nikita Belyaev
(NRNU MEPhI)
06/10/2015, 14:30
Nuclear physics and particle physics
We review the Effective Field Theory (EFT) to make projections on physics beyond the Standard Model in the Higgs sector.
We provide relations between the non-Standard Model couplings of the Strongly-Ineracting Light Higgs (SILH) effective Lagrangian implemented in the eHDecay package and the corresponding terms of the spin-0 Higgs Characterisation model's effective Lagrangian used with the...
Mikhail Kirsanov
(MEPhI)
06/10/2015, 14:30
Methods of experimental physics
The effect of intense pulsed irradiation on the operation of the liquid xenon spectrometer was studied. The ionization chamber filled with liquid xenon was irradiated by bremsstrahlung pulses of the microtron. The pulse repetition rate was 400 Hz. The absorbed dose ranged from 10-7 to 0.1 Gy per pulse. Stable operation of the liquid xenon spectrometer in the intervals between the pulses of the...
Ms.
Elena Volkova
(National Research Nuclear University MEPhI)
06/10/2015, 14:30
Nuclear physics and particle physics
This report is about a part of ILC software development. The goal of this study was to create a code, that allow us to make automated testing of ILC results. The code uses the result of generation, Mokka simulation and Marlin reconstruction of ILC events. The codes task is automated Higgs recoil mass analysis everyday and to compare Higgs recoil mass with one of the previous day result.
Mr.
Maxim Gromov
(SINP MSU)
06/10/2015, 14:30
Nuclear physics and particle physics
Online calibration of neutrino liquid scintillator detector at energies above 10 MeV is very important for study of such rare process as supernova and for correct calculation of backgrounds if spectral properties is the focus of researches. The traditional procedure implies the usage of radioactive sources with well-known spectral properties but such approach is limited by available...
Ivan Tolstukhin
(NRNU MEPhI)
,
Dr.
Sergey Somov
(NRNU MEPhI)
06/10/2015, 14:30
Methods of experimental physics
We describe the pair spectrometer of the GlueX detector at Jefferson Lab. Performance of the pair spectrometer during the first beam commissioning runs is presented.
Mr.
Oleg Titov
(NRC "Kurchatov Institute")
06/10/2015, 14:30
Nuclear physics and particle physics
We have reviewed the modern status of the cross section of inverse beta-decay.
Our analysis consist of two parts: discussing so-called "naive" cross section and its corrections. The "naive" cross section energy dependence and the corrections energy dependence are presented.
Mr.
Andrey Zaitsev
(JINR)
,
Dr.
Pavel Zarubin
(Joint Institute for Nuclear Research)
06/10/2015, 14:30
Nuclear physics and particle physics
Featuring an excellent sensitivity and spatial resolution nuclear track emulsion (NTE) maintains the position of a universal and inexpensive detector for survey and exploratory research in microcosm physics. Use of this classical technique on beams of modern accelerators and reactors turns out highly productive. In a number of important tasks the completeness of observations provided in NTE...
Mr.
Nikita Ermakov
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
06/10/2015, 14:30
Methods of experimental physics
The Solenoidal Tracker At RHIC (STAR) uses the Time Projection Chamber
(TPC) in order to perform tracking and the particle identification. With
increasing statistics, it has become critical to reduce systematic
uncertainties due to TPC alignment and distortion corrections (such as
space charge, which has also grown with increasing luminosity). In order
to improve these corrections and...
Ms.
Olga Solovjeva
(NRC "Kurchatov Institute" SSC RF Institute of Theoretical and Experimental Physics & National Research Nuclear University “MEPhI”)
06/10/2015, 14:30
Nuclear physics and particle physics
The study of the internal structure of hadrons in external electromagnetic fields is important and relevant in the context of the current experiments in JLAB, COMPASS and future experiments PANDA, CBM (FAIR). The COMPASS experiment have measured electrical polarizability. In non-central heavy ions colisions the magnetic field value in the moment of collision can reach up to $15m_\pi^2 ∼ 0.27...
Mr.
Vladimir Berdnikov
(NRNU MEPhI)
06/10/2015, 14:30
Methods of experimental physics
The GlueX experiment was designed to search for hybrid mesons with exotic quantum numbers using a beam of linearly polarized photons incident on a liquid hydrogen target. The spectrum of these states and their mass splitting from normal mesons may yield information on confinement. The Forward Drift Chambers (FDC) are multiwire drift chambers with anode and cathode read-out designed to measure...
Mr.
Aleksanrd Mefodiev
(INR RAS)
06/10/2015, 14:30
Nuclear physics and particle physics
Under the project Advanced European Infrastructures for Detectors at Accelerators (AIDA) Institute of Nuclear Research (INR) designed and tested Totally Active Scintillator Detector (TASD).
The TASD detector consists of 50 modules of plastic scintillators. Each module is instrumented with one X and one Y plane, with 86 scintillator bars per plane. The bar width, height and length are 1.0 cm,...
Kirill Chilikin
(ITEP, MEPhI)
06/10/2015, 15:00
Nuclear physics and particle physics
Recent results on charged charmoniumlike states at Belle are presented.
A full amplitude analysis of $\bar{B}^0 \to \psi(2S) K^- \pi^+$ decays,
with $\psi(2S)\to\mu^+\mu^-\text{ or }e^+e^-$, was performed to constrain the
spin and parity of the $Z_c(4430)^+$. The $J^P=1^+$ hypothesis is
favored over the $0^-$, $1^-$, $2^-$ and $2^+$ hypotheses at the levels
of $3.4\sigma$, $3.7\sigma$,...
Prof.
Yuri Pyatkov
(MEPhI)
06/10/2015, 15:00
Methods of experimental physics
Using of semiconductor detectors for spectrometry of heavy ions is known to have several methodological obstacles, which are necessary to be overcome. First of them is pulse-height defect (PHD), which is manifested in the form of apparently less energies than particles actually have. Second is plasma delay effect (PD), which prevents precise measurements (TOF technique) due to creation of...
Prof.
Marco Pallavicini
(Universita' di Genova and INFN Genova)
06/10/2015, 15:00
Nuclear physics and particle physics
The seminar will report about the science case and the status of the SOX project, an experiment for the search of sterile neutrinos or other short distance effects with the Borexino detector. The experimental concept, the design of the source, the calorimetric measurements and the scientific sensitivity will be reported.
Dr.
Ruslan Chistov
(ITEP, MEPhI)
06/10/2015, 15:15
Nuclear physics and particle physics
In this talk the decays of B-mesons into baryons will be discussed. Large mass of B-meson makes possible the decays of the type B-->baryon anti-baryon (+mesons). Experimental observations and measurements of these decays at B-factories Belle and BaBar have stimulate the development of theoretical models in this field. So we overview the experimental results together with the current...
Mr.
Mathieu Durero
(CEA Saclay, DSM/Irfu)
06/10/2015, 15:15
Nuclear physics and particle physics
The SOX project plans to deploy a radioactive antineutrino source made
from 144 Cerium at the Borexino detector. It will be produced at PA
Mayak from spent nuclear fuel. This source is a key component of the
experiment and issues several challenges due to requirements on
activity, purity and emission flux knowledge for the scientific success
of the project. Moreover handling and safety...
Dr.
Alexander Glyanenko
(National Nuclear Research University “MEPHI”)
,
Dr.
Vitaly Yurov
(National Nuclear Research University “MEPHI”, Moscow, Russia)
06/10/2015, 15:15
Methods of experimental physics
Architecture and operational concept description of the PING-P unit are presented. In-flight calibration and stabilization procedures are listed. Data and technology characteristics are presented. Two key functional modes, the «Patrol» and the «Burst», are described. Spectral data: single detector spectra, double coincidence spectra, calibration spectra, automatic calibration LED amplitude...
Mr.
Anton Taraskin
(NRNU MEPHI)
06/10/2015, 15:30
Methods of experimental physics
This article describes the neutron detector based on a ZnS(Ag)/6LiF scintillator screen. The detector was designed for a purpose of astrophysical experiments. Light collection is performed via low-opacity polystyrene layer coupled with a PMT. The work includes numerical simulation data and experimental results obtained for MeV neutron fluxes.
Dr.
Ruslan Chistov
(ITEP, MEPhI)
06/10/2015, 15:30
Nuclear physics and particle physics
B-factories Belle and BaBar during its operation made not only measurements connected with B-meson decays but also numerous observation and measurements in charm physics. In particular, their results on charm baryon decays and spectroscopy have enlarged and enriched the current picture of heavy flavour hadrons. In this talk we overview current status of charm baryons and their excited states....
Dr.
Lea Di Noto
(INFN Genova)
06/10/2015, 15:30
Nuclear physics and particle physics
In order to perform a resolutive measurement to clarify the neutrino anomalies and to observe possible short distance neutrino oscillations, the SOX (Short distance neutrino Oscillations with BoreXino) experiment is under construction. In the first phase, a 100 kCi 144Ce-144Pr antineutrino source will be placed under the Borexino detector at the Laboratori Nazionali del Gran Sasso, in center...
Dr.
Timofey Uglov
(MEPhI)
06/10/2015, 15:40
Nuclear physics and particle physics
A possible interpretation of charged charmonium-line state
Z+(4430) as purely kinematical effect is discussed. This
approach allows to avoid exotic states introduction to the theory.
Structures in Psi(2S)pi+ mass spectrum are described by
existence of Ds(*)' resonance as hidden intermediate state.
Models predictions are compared to the LHCb results.
Ms.
Irina Mosyagina
(VNIIHT)
06/10/2015, 15:45
Methods of experimental physics
The results of physical and material science and technological development of new materials of radiation photonics - nano- and microstructure of radiation-sensitive and radiation-resistant optical glass and fibers based on quartz are presented in the report. The possibility of their application in neutron diagnostics devices of nuclear power objects are considered. The option of the neutron...
Mr.
Konrad Altenmüller
(Technische Universität München)
06/10/2015, 15:45
Nuclear physics and particle physics
A calorimeter is being designed and constructed to measure the thermal power and thus the activity (antineutrino-generation rate) of a Cerium source for SOX with <1% accuracy. SOX aims at discovering or refuting eV-scale sterile neutrinos by searching for short-baseline oscillations of active-to-sterile neutrinos at Borexino. This talk presents the thermal model of the calorimetric...
Dr.
Alexey Nefediev
(Institute of Theoretical and Experimental Physics)
06/10/2015, 15:55
Nuclear physics and particle physics
The role of pion dynamics in the X(3872) charmonium-like state is studied in the framework of a
renormalisable effective quantum field theory approach and they are found to play a substantial role in the formation of the X. Chiral extrapolation from the physical point to unphysically large pion masses is performed and the results are confronted with the lattice predictions. The proposed...
Dr.
Marina Chadeeva
(ITEP, MEPhI)
06/10/2015, 16:00
Methods of experimental physics
The highly granular analogue hadron calorimeter was developed and constructed by the CALICE collaboration and intensively tested with both steel and tungsten absorbers. The active layers of the calorimeter are assembled from the scintillator tiles with the individual readout by silicon photomultipliers. The longitudinal and radial development of showers induced by hadrons in the energy range...
Birgit Neumair
(Technische Universität München, James-Franck-Straße 1, 85748 Garching)
06/10/2015, 16:00
Nuclear physics and particle physics
In the last years, several neutrino oscillation experiments reported results not compatible within the 3-neutrino model, which hint at the existence of light sterile neutrinos. To test this hypothesis, the SOX (Short distance neutrino Oscillations in BoreXino) experiment will search for oscillations from active to sterile neutrinos by placing radioactive electron (anti-)neutrino sources...
Dr.
Alexey Nefediev
(ITEP, MEPhI, MIPT)
06/10/2015, 16:10
Nuclear physics and particle physics
A practical parametrisation for the line shapes of near threshold resonance(s) is derived in the framework of a coupled-channel model which includes an arbitrary number of elastic and inelastic channels as well as a bare pole term. The parameters have a direct relation to phenomenology and can be employed to study the nature of the near-threshold states. The resulting analytical...
Dr.
Oleg Markin
(ITEP, MEPhI)
06/10/2015, 16:15
Methods of experimental physics
In the COMET experiment searching for the muon-electron conversion not conserving leptonic numbers, a scintillator-strip-based veto system will be used to prohibit the COMET detector from fake signals initiated by cosmic muons. In order to verify the efficiency of the system, we have built its computer model and carried out various simulations. To tune the model, experimentally measured data...
Dr.
Alessio Caminata
(INFN Genova)
06/10/2015, 16:15
Nuclear physics and particle physics
Borexino is an unsegmented neutrino detector operating at LNGS in central Italy. The experiment has shown its performances through its unprecedented accomplishments in the solar and geo-neutrino detection. These performances make it an ideal tool to accomplish a state-of-the-art experiment able to test the existence of a sterile neutrino (SOX experiment). For both the solar and the SOX...
Prof.
Alexey Drutskoy
(MEPhI, ITEP)
06/10/2015, 16:25
Nuclear physics and particle physics
The physics case for the international linear collider (ILC) project is discussed in this talk. The project is proposed to be built in Japan and a final decision has to be taken in 2016 on the government level. The initial data taking with e+e- beams is planned at the center-of-mass energy of 500 GeV with following runs at 250 GeV and 350 GeV. Potential physics studies at ILC are discussed...
Galina PAKHLOVA
(MIPT,MEPhI)
07/10/2015, 08:00
Nuclear physics and particle physics
Recently dozens of new charmonium states have been observed. Most of them are so-called “XYZ” states that do not fit with the predictions of the quark model. The nature of these exotic states is still unclear. We present new experimental results from B-factories, LHCb and BESIII experiments, discuss interpretations of charmoniumlike states and perspective charmonium study.
Dr.
Roman Mizuk
(MEPhI)
07/10/2015, 08:20
Nuclear physics and particle physics
We discuss recent results on bottomonium(-like) states from e+e- colliders. In particular we consider measurements of total b-bbar cross section and cross sections for exclusive bottomonia + light hadrons processes in the region of the Upsilon(10860) and Upsilon(11020) resonances. We also report on the recent progress with the charged bottomonium-like states Zb(10610) and Zb(10650).
Pavel Pakhlov
(MEPhI)
07/10/2015, 08:40
Nuclear physics and particle physics
We review numerous results in *B*, charm and tau physics from the *B* Factories, obtained last decade. They provide currently strong constraints on New Physics extensions beyond the Standard Model. We discuss the physics program at Super *B* factory, a next generation asymmetric collider with 50 times the luminosity of the existing colliders, and its capability in cooperation with LHC of new...
Dr.
Nikolay Skobelev
(Joint Insitute for Nuclear Research, Dubna, Russia)
07/10/2015, 09:00
Nuclear physics and particle physics
Some problems of Universe evolution, nucleosynthesis and cosmochronology are considered from the nuclear and elementary particles physics point of view particularly using the last results obtained by using the radioactive nuclear beams. The comparison of the processes taking place in the Universe with the mechanism of formation, decay and interaction at different energies of nuclei is carried...
Dr.
Pavel Zarubin
(Joint Institute for Nuclear Research)
07/10/2015, 09:30
Nuclear physics and particle physics
Nuclear track emulsion (NTE) is still retaining its exceptional position as a means for studying the structure of diffractive dissociation of relativistic nuclei owing to the completeness of observation of fragment ensembles and owing to its record spatial resolution. Separation of products of fragmentation and charge-exchange reactions of accelerated stable nuclei make it possible to create...
Prof.
Kyle Cranmer
(New York University)
07/10/2015, 10:30
Jiri Hejbal
(Institute of Physics of the Czech Academy of Sciences)
07/10/2015, 11:00
Nuclear physics and particle physics
Various Standard Model measurements have been performed in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 and 8 TeV using the ATLAS detector at the Large Hadron Collider. A review of a selection of the latest results of electroweak measurements, W/Z production in association with jets, jet physics and soft QCD is given. Measurements are in general found to be well described...
Dr.
Milos Dordevic
(CERN)
07/10/2015, 11:30
Nuclear physics and particle physics
Recent results of Standard Model physics using 7 and 8 TeV data recorded by the CMS detector are reviewed. This overview includes studies of vector boson production, results on V+jets production with light and heavy flavours, multiboson measurements and anomalous couplings searches and also the latest results on jet production and properties. The most recent 13 TeV results are presented as...
Dr.
Valery Sinev
(Institute for Nuclear Research RAS)
07/10/2015, 13:00
Nuclear physics and particle physics
Neutrino mixing matrix elements were discovered one by one beginning from the solar neutrinos anomaly was found and neutrino oscillation hypothesis was proposed. At the moment all elements are known excluding several complex phases. Measuring of the last mixing element $\theta_{13}$ was realized recently with three international experiments Double Chooz, RENO and Daya Bay. The highest accuracy...
Egor Voronenko
(Yurievich)
07/10/2015, 13:00
Methods of experimental physics
Portable Radiometer tritium RKB-05P created for selective control tritium in the air (in gas and vapor phase) and water (in condensate water vapor from the air or in water after distillation) and to measure the activity of other beta-emitting radionuclides in water sample. The principle of operation is based on measurement of the activity of samples previously taken from the water or air in...
Dr.
Vasilij Kushpil
(Nuclear Physics Institute, Academy of Sciences of the Czech Republic, 25068, Řež, Czech Republic)
07/10/2015, 13:00
Nuclear physics and particle physics
During last years, semiconductor avalanche detectors are being widely
used as the replacement for classical PMTs in calorimeters for many HEP
experiments. In this report, basic selection criteria for replacement of
PMTs by APDs and specific problems in the investigation of detectors
radiation hardness are discussed.
The design and performance of the hadron calorimeters developed for...
Dr.
Sergei Grabchikov
(Scientific-Practical Materials Research Center, National Academy of Sciences of Belarus)
07/10/2015, 13:15
Methods of experimental physics
The problem of electronic and scientific equipment protection becomes more actual nowadays. Protection from low-frequency electromagnetic radiation (LF EMR) is the most complicated case of electromagnetic shielding.
The results of the shielding efficiency from LF EMR by multilayer film shields based on permalloy / copper systems, depending on their internal structure, the parameters of the...
Alexander Khromov
(NRNU MEPhI)
07/10/2015, 13:15
Nuclear physics and particle physics
The RED-100 (Russian Emission Detector) is being constructed for the experiment on the first observation of elastic coherent neutrino scattering off atomic nuclei. This fundamental process was predicted several decades ago by the Standard Model of electroweak interactions but has not been discovered yet. The RED-100 is an emission two-phase xenon detector containing ~200 kg of the liquid Xe (~...
Dr.
Svetlana Kushpil
(Nuclear Physics Institute of the Academy of Sciences of the Czech Republic)
07/10/2015, 13:15
Nuclear physics and particle physics
Svetlana Kushpil on behalf of the ALICE Collaboration.
The ALICE (A Large Ion Collider Experiment) detector was constructed
to study the properties of hot and dense hadronic matter formed in
relativistic nuclear collisions. During the second long LHC shutdown in
2018-2019, the collaboration plans to upgrade the current vertex
detector, the Inner Tracking System (ITS), in order to...
Mr.
Konstantin Filippov
(National research nuclear university «MEPhI»)
07/10/2015, 13:30
Nuclear physics and particle physics
sTGC chambers are designed to operate at sLHC conditions and will be installed to the ATLAS detector during Phase-I upgrade of the ATLAS muon spectrometer. These chamber will provide precise coordinate measurements of the charged particle track and level 1 trigger for high Pt muons. It is critical for the ATLAS detector to ensure a robust operation of these chambers during entire sLHC...
Mr.
Rodion Faradzhaev
(National Research Nuclear University MEPhI)
07/10/2015, 13:30
Methods of experimental physics
Scintillation detectors based on Hamamatsu photomultiplier tubes (PMTs) R6233-100 and R6231-100 with diameter of photocathode 76 mm and 51 mm respectively are used in GRIS experiment, which is planned to be installed onboard the ISS, and in PING-M for Interhelioprobe mission. PMT performances significantly change under the influence of a magnetic field. Even the relatively weak geomagnetic...
Dr.
Dmitry Akimov
(ITEP and MEPhI)
07/10/2015, 13:30
Nuclear physics and particle physics
A ton-scale liquid xenon two-phase emission detector for nuclear reactor monitoring is proposed. The detector operation is based on the elastic scattering off atomic nuclei of antineutrinos coming from the reactor. It is shown that a ton-scale detector is able to measure antineutrino flux from reactor with precision necessary for nuclear reactors safeguards needs.
A specific design of the...
Mr.
Phyo Wai
(NRNU MEPhI)
07/10/2015, 13:45
Methods of experimental physics
In different materials for magnetic shields the maximum permeability is achieved at different values of the magnetic field. This determines the choice of material. So for protection from magnetic fields strength of 10 - 150 A/m is advisable to apply the amorphous ribbon 84KXCP. For stronger fields (more than 400 A/m) multilayer film shields based on Ni20Fe80 should be used. Using these...
Dr.
Peter Teterin
(National Research Nuclear University "MEPhI")
07/10/2015, 13:45
Nuclear physics and particle physics
A New Small Wheel (NSW) is a new innermost part of the ATLAS muon end-cap system which will be installed in the ATLAS detector during forthcoming Phase-I upgrade of the Large Hadron Collider at CERN. It consists of small-strip Thin Gap Chambers (sTGC) and Micromegas chambers which were designed to sustain large particle fluxes during Super LHC operation. In order to ensure a high production...
Mr.
Aldiyar Oralbaev
(NRC "Kurchatov institute")
07/10/2015, 13:45
Nuclear physics and particle physics
Prototype of industrial reactor antineutrino detector iDREAM is dedicated for an experiment to demonstrate the possibility of remote monitoring of PWR reactor operational modes by neutrino method in real-time in order to avoid undeclared exposure modes for nuclear fuel and unauthorized removal of isotopes. The prototype detector was started up in 2014. To test the detector elements and...
Mr.
Alexander Novikov
(NRNU MEPhI)
07/10/2015, 14:00
Methods of experimental physics
A method for earthquake precursors search based on variations of 222Rn concentration determined via intensity measurement of 222Rn daughter nuclei gamma ray emission lines by means of xenon gamma-ray spectrometer is discussed. The equipment description as well as the first experimental data are presented.
Ms.
Tatiana Ovsiannikova
(NRNU MEPHI, INR RAS)
07/10/2015, 14:00
Nuclear physics and particle physics
The T2K (Tokai-to-Kamioka) is a long baseline neutrino experiment designed to study various parameters that rule neutrino oscillations, with an intense beam of muon neutrinos. A near detector complex (ND280) is used to constrain non-oscillated flux and hence predict the expected number of events in the far detector (Super-Kamiokande). The difference in the target material between the far...
Dr.
Vladimir Tikhomirov
(P.N.Lebedev Physical Institute, Russian Academy of Sciences)
07/10/2015, 14:00
Nuclear physics and particle physics
The ATLAS experiment at the Large Hadron Collider has an ambitious program of the detector upgrade to meet an expected rise of accelerator luminosity. The first large system which supposed to be installed in 2019 is a New Small Wheel (NSW) for ATLAS muon system. In order to ensure high reliability of NSW chambers an X-ray scanning technique is developed. One of the main parts of the X-ray...
Ms.
Liudmila Borodikhina
(NRNU MEPhI, NRC Kurchatov Institute)
07/10/2015, 14:15
Nuclear physics and particle physics
Perspectives for the studies of diffuse supernova neutrino background (DSNB) by modern underground detectors are reviewed. DSNB neutrino fluxes, their spectra and current experimental limits on their flux are discussed.
Dr.
GEORGY BASHINDZHAGYAN
(Lomonosov Moscow State University)
07/10/2015, 14:15
Nuclear physics and particle physics
Gas Pixel Detector (GPD) technology offer new possibilities, which make them very attractive for application in existing and future accelerator experiments and beyond. GPD combine advantages of the Si-pixel detectors and gaseous detectors. They can be produced radiation hard and have low power consumption at relatively cheap technology.Low capacitance of the individual pixel channel allows to...
Mr.
Vladislav Vishnyakov
(Sergeevich)
07/10/2015, 14:30
Nuclear physics and particle physics
Anisotropic flow measurements for identified and unidentified charged hadrons are currently being measured at both the Relativistic Heavy Ion Collider (RHIC) and the Large
Hadron Collider (LHC), to aid investigations of the temperature (T) dependence of the equation of transport properties of the hot and dense plasma produced in energetic heavy ion collisions. In this work I review the...
Mr.
Alexander Novikov
(NRNU MEPhI)
07/10/2015, 14:30
Methods of experimental physics
Gamma-ray spectrometric equipment for environmental radiation monitoring by unmanned aerial vehicle (UAV) is described. The results of equipment testing are presented.
Mr.
Alexander Novikov
(NRNU MEPhI)
,
Mr.
Alexander Shustov
(NRNU MEPhI)
,
Dr.
Irina Chernysheva
(NRNU MEPhI)
07/10/2015, 14:30
Methods of experimental physics
Software for identification of radionuclides using energy spectra of xenon gamma-ray spectrometer was developed. Software includes the gamma-ray library and allows to perform the qualitative and quantitative isotopes analysis of gamma-ray spectra.
Dr.
Valentina Dmitrieva
(NRNU MEPhI)
07/10/2015, 14:30
Methods of experimental physics
A general concept of a new interdisciplinary glossary, which includes particle accelerator terminology used in medicine, as well as relevant medical concepts, is presented. Its structure and usage rules are described. An example, illustrating the quickly searching technique of relevant information of this Glossary in considered. A website addresses, where one can get an access to the Glossary,...
Mr.
IURY GNEZDILOV
(IURIEVICH)
07/10/2015, 14:30
Methods of experimental physics
Modular neutron detector on the basis of composite scintillators which may be used in creation of radiation monitors with a large sensitive surface was suggested. Composite scintillators are composed of dielectric gel as a basis where granules of scintillating substance, for example, gadolinium granules containing scintillators, are introduced. Thermal neutron converter, which contains 6Li or...
Dr.
Sergey Aleksandrin
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
07/10/2015, 14:30
Methods of experimental physics
The possibility of using the plastic scintillators for detection nuclei with high ionizing density was studied in this report. The scintillators could have different characteristics such as attenuation length, light yield efficiency. It is also important to take into account the influence of the quenching effect on the detection of heavy nuclei. It was analyzed the method of calibration...
Dr.
Arkadiy Taranenko
(MEPhI)
07/10/2015, 14:30
Nuclear physics and particle physics
The anisotropic flow coefficients $v_n$ can provide constraints crucial
for
precision extraction of the specific shear viscosity eta/s, of the
plasma
(QGP) produced in heavy-ion collisions at RHIC. A significant recent
attention
has been given to theoretical studies of $v_n$ (odd and even) and
the associated initial [fluctuating] eccentricities which drive $v_n$.
In...
Mr.
Vladimir Kadilin
(NRNU MEPHI)
07/10/2015, 14:30
Methods of experimental physics
The aim of work is development detectors for diagnostic of physical process for monitoring of radiation situation at nuclear reactors, including fast neutron reactors. Detectors for registration of radiation in gas and liquid media in wide measurement range and for identification of presence of particular isotopes- gamma sources are needed. The model of scintillator detectors using crystals...
Mr.
Vitaliy Florentsev
(NRNU MEPhI)
07/10/2015, 14:30
Methods of experimental physics
This article describes the dependencies of subsonic laminar Poiseuille’s flow in a pipe of circular cross, the equations of motion of quasi-stationary processes, that are taking place when the pressure in the gas volume flows, dependencies of change of pressure in the volume of the gas flow temperature changes. This task will be interesting for design engineers that are involved in the...
Mr.
IURY GNEZDILOV
(IURIEVICH)
07/10/2015, 14:30
Methods of experimental physics
A new neutron detector for GAMMA-400 space observatory for e/h showers separation was suggested. The detector is composed of plastic scintillation blocks wrapped by cadmium foil, and moderator layers. Its characteristics obtained by simulation on GEANT4 with the characteristics of the boron-containing scintillation detector which was installed on the International Space Station (ISS-CREAM...
Mrs.
Elena Ryabeva
(NRNU MEPhI)
07/10/2015, 14:30
Methods of experimental physics
The development of model for neutron detectors for measurements of fast neuron fluxes. The construction of detectors is based on alternating layers of silicon as detector and boron (enriched with 10B) as neutron converter located in moderator. The efficiency of fast neutron registration of detectors with one layer of boron and silicon modeled by GEANT4 is very low (approximately 4%). The...
Mr.
IURY GNEZDILOV
(IURIEVICH)
07/10/2015, 14:30
Methods of experimental physics
The design of the neutron detector based on 3He-counters for use in GAMMA-400 space observatory for e/h showers separation was suggested. Its characteristics are obtained by simulation on GEANT4 with the characteristics of the neutron detector which was installed on PAMELA spectrometer were compared. Time allocation of neutrons absorption was obtained as a function of registration time for...
Mr.
Alexander Novikov
(NRNU MEPhI)
,
Mr.
Alexander Shustov
(NRNU MEPhI)
,
Dr.
Irina Chernysheva
(NRNU MEPhI)
07/10/2015, 14:30
Methods of experimental physics
Software for gamma-ray spectra analyzing was developed. Software has some services to
visualization of gamma-ray spectra, background spectrum and shadow spectrum, analyzing of gamma-picks by Gaussian distribution, calculation of energy resolution and other gamma-picks characteristics, subtraction of background spectrum, manipulation with shadow spectrum.
Mr.
Alexander Novikov
(NRNU MEPhI)
,
Mr.
Alexander Shustov
(NRNU MEPhI)
,
Dr.
Irina Chernysheva
(NRNU MEPhI)
07/10/2015, 14:30
Methods of experimental physics
Software for xenon gamma-ray spectrometers control was developed. Software supports the multi-windows interface. Software has the possibilities for acquisition of gamma-ray spectra from xenon gamma-ray detector via USB or RS-485 interfaces, directly or via TCP-IP protocol, energy calibration of gamma-ray spectra, saving of gamma-ray spectra on a disk.
Dr.
GEORGY BASHINDZHAGYAN
(Lomonosov Moscow State University)
07/10/2015, 14:30
Methods of experimental physics
The goal of the proposed experiment is to check the evidence for a possible solar influence on nuclear decay rates, and to measure any effect quantitatively. Simultaneous decay rate measurements with many identical radioactive sources would allow us to study any possible correlations between their rate changes, and thus to improve the accuracy and reliability of the measurements.
Positioning...
Mr.
Artyom Solodovnikov
(NRNU MEPhI)
07/10/2015, 14:30
Methods of experimental physics
The fast multilayered scintillation detector (MSD) of the new telescope-spectrometer for the space experiment ALFA-ELECTRON planned to work on the outer surface of the Russian Segment (RS) of the International Space Station (ISS) currently being in ground testing mode. This article describes and shows the basic scheme for determining the amplitude parameters of the detector using specially...
Georgy Lukyanchenko
(NRC Kurchatov Institute)
07/10/2015, 15:00
Nuclear physics and particle physics
For large volume neutrino and antineutrino detectors it is crucial to have an efficient data acquisition system capable of digitizing data from thousands of detection channels. Here we present a flexible DAQ system architecture consisting of large number of fast waveform digitizers and configurable FPGA-based trigger logic. Current implementation of the system is functioning in the Borexino...
Mr.
Emile Nagaev
(JSC NIITFA, NRNU MEPHI)
07/10/2015, 15:00
Methods of experimental physics
1M.V. Glebov, 2V.A. Pershukov, 3S.A. Koloskov, 1,4E.I. Nagaev
1JSC "NIITFA", 2SC "Rosatom", 3JSC "NII", 4NRNU MEPHI
Mobile road pavement control facility
Specialists of the State Corporation "Rosatom" developed the conception of creating a device for road pavement control, called "Condor", a basic element, which is an X-ray densitometer that has no analogues in the world. The "Condor"...
Mr.
Grigory Nigmatkulov
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
07/10/2015, 15:00
Nuclear physics and particle physics
The two-particle correlations at low relative momenta (also known as correlation femtoscopy) are sensitive to quantum statistics and allow to measure the space-time picture of the system evolution created in heavy-ion (HI) and particle collisions. The spatio-temporal parameters extracted from HI collisions describe the system at the last moment of the collision evolution - kinetic freeze-out...
Mr.
Pavel Naumov
(MEPhI)
07/10/2015, 15:15
Nuclear physics and particle physics
The system for forming a trigger for the RED-100 liquid xenon detector has been developed. The trigger can be generated for all types of events required to calibrate the detector and data acquisition, including events with one ionization electron. The system has an event detection mechanism where each event is assigned with the timestamp and event type. The trigger system is required in the...
Dr.
Victor Riabov
(PNPI, MEPHI)
07/10/2015, 15:15
Nuclear physics and particle physics
A hot and dense matter called strongly interacting quark-gluon plasma (sQGP) is created in heavy ion collisions at RHIC energies. Detailed study of the properties of this new state of matter is a driving force of recent research at RHIC.
Hard scattered partons loose energy via rescattering and radiation traversing the medium produced in heavy ion collisions resulting in suppressed...
Mr.
Iliya Lagoida
(Moscow Engineering Physics Institute)
07/10/2015, 15:15
Methods of experimental physics
At the last years were designed many nuclear physics methods of matter elemental analysis. Many of these methods have received a complete hardware decision and became an advantage of many industrial laboratories. Measurement methods of matter composition are based on the X-ray intensity detection from the nuclei of elements which are excited by external X-ray source. The production of...
Mr.
Petr Parfenov
(National Research Nuclear University "MEPhI" (Moscow Engineering Physics Institute))
07/10/2015, 15:30
Nuclear physics and particle physics
The CP symmetry breaking in quantum chromodynamics (QCD) could be realized via transitions between local fluctuations of gauge fields. Azimuthal correlations which characterize the asymmetry of the emitted charged particles with respect to the reaction plane in non-central nucleus-nucleus collisions are the promising tools for experimental study of local CP violation in the strong...
Dr.
Dmitry Akimov
(ITEP and MEPhI)
,
Mr.
Grigory Simakov
(ITEP)
07/10/2015, 15:30
Nuclear physics and particle physics
Krypton-85 is a technogenic beta-radioactive isotope which produces background in a low-energy region in dark matter and neutrino detectors: in noble gas detectors, especially in liquid Xenon detectors, in organic liquid scintillator detectors.
We propose a new method of reduction of the 85Kr isotope in a detector medium based on adding to the detector medium a Krypton sample depleted of the...
Mr.
Sone Pyae
(Nyein)
07/10/2015, 15:30
Methods of experimental physics
Gamma-ray spectra emitted by containers with solid radioactive waste measured by xenon gamma-ray spectrometer are presented. Identification of nuclides from container by gamma-ray lines emission was performed. Activities of isotopes 137Cs and 60Co contained in the waste were estimated by means of the method based on the analysis of simulated and experimental data.
Prof.
Vitalii Okorokov
(National Research Nuclear University "MEPhI" (Moscow Engineering Physics Institute))
07/10/2015, 15:45
Nuclear physics and particle physics
The energy dependence of the chaoticity parameter, derived from Bose-Einstein correlations (BEC) of pion-pairs produced in proton-proton collisions, is investigated. Considered are the one and three dimensions (1D, 3D) of the BEC analyzed in terms of a Gaussian and / or exponential distributions. A marked difference is observed between the dependence of the chaoticity on energy in the 1D and...
Alexey Konovalov
(MEPhI/ITEP)
07/10/2015, 15:45
Nuclear physics and particle physics
We describe basic principles of electron emission in two-phase xenon and discuss possible ways of spontaneous electron emission. We present a brief summary of experimental results connected to single electron emission including the recent one obtained by the authors. The results of study seem to confirm the hypothesis, that single electron signals originate from the cloud of ionization...
Maria Baranova
(JSC “SNIIP”, Moscow)
07/10/2015, 15:45
Methods of experimental physics
The structural and circuit technology features of creation of wide-range diamond detector device for measuring of power of dose of gamma radiation are examined.On the basis of the obtained experimental data the estimation of possibility of the use of detector in the conditions of development of before and emergency situation on a nuclear power plant is conducted
Dr.
Olesya Falomkina
(Lomonosov MSU)
07/10/2015, 16:00
Methods of experimental physics
In the experiments at the FOBOS spectrometer [H-G.Ortlepp, et al., NIM A 403 (1998) 65] dedicated to study of the spontaneous fission of the 248Cm and 252Cf nuclei in the mass correlation distribution of fission fragments new unusual structures bounded by magic clusters were observed for the first time. The structures were interpreted as a manifestation of a new exotic decay called ...
Dr.
Ilya Selyuzhenkov
(GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
07/10/2015, 16:00
Nuclear physics and particle physics
The expected performance of the Projectile Spectator Detector (PSD) for the CBM experiment at the future FAIR facility will be presented.
The PSD is a compensating lead-scintillator calorimeter designed to measure the energy distribution of the projectile nuclei fragments (spectators) and forward going particles produced close to the beam rapidity.
The main purpose of the PSD is to provide...
Mr.
Aleksey Shakirov
(MEPhI)
07/10/2015, 16:00
Nuclear physics and particle physics
A cryogenic system based on a two-phase closed tubular thermosyphon with 12 mm diameter copper tube is developed. It was used for thermal stabilization of the liquid xenon emission detector RED-100. The nitrogen refrigerant cooled down with a free-boiling liquid nitrogen bath has been used. It was shown that the system supports the RED100 operation at temperature 166 K with accuracy ±1К.
Svetlana Vdovkina
(Student)
07/10/2015, 16:15
Nuclear physics and particle physics
The measurements of collective flow effects in particle production have provided invaluable insights on the transport properties of the strongly interacting matter produced in relativistic heavy-ion collisions at RHIC. The detailed comparison of flow measurements from PHENIX and STAR experiments at RHIC will be presented and discussed. The suggestions for the future measurements of flow at...
Mr.
Yury Melikyan
(NRNU MEPhI)
07/10/2015, 16:15
Nuclear physics and particle physics
The two-phase cryogenic xenon emission detector RED100 is planned to be equipped by 38 Hamamatsu R11410-20 photomultiplier tubes, which are claimed to be operable at cryogenic temperatures and made of extremely low background materials.
A thorough characterization procedure has been carried out for each PMT unit to be installed to the detector. The main results obtained are presented here,...
Mr.
Alexander Zaytsev
(NRNU MEPhI)
07/10/2015, 16:30
Nuclear physics and particle physics
Azimuthal anisotropy is one of the key observables to study the properties of matter created in high energy heavy-ion collisions at RHIC and LHC. The collective behavior is quantified in terms of anisotropy coefficients $v_n$ measured with respect to their corresponding event planes. Predictions from the viscous hydrodynamics for the scaling of the anisotropic flow coefficients $v_n$ with...
Prof.
Alain Blondel
(University of Geneva)
,
Prof.
Yury Kudenko
(INR RAS)
08/10/2015, 08:00
Nuclear physics and particle physics
New results obtained with reactor, accelerator and atmospheric neutrinos will be presented. An emphasis will be put on recent measurements of muon anti-neutrino oscillations in the T2K experiment and first results obtained in the Nova experiment. The status of the search for CP violation in neutrino oscillations will be discussed. Future long baseline neutrino experiments will be also briefly...
Prof.
Cristiano Galbiati
(Princeton University)
08/10/2015, 08:30
Nuclear physics and particle physics
The DarkSide-50 dark matter detector is a two-phase argon TPC installed at Laboratori Nazionali del Gran Sasso at the center of two nested veto detectors, a 30-tonne liquid scintillator neutron veto and a 1,000-tonne water Cherenkov muon veto.
While operating in 2014 with a fill of argon extracted from the atmosphere, DarkSide-50 demonstrated its capability to operate in a background-free...
Alexander Bolozdynya
(NRNU MEPhI)
08/10/2015, 09:00
Nuclear physics and particle physics
Two-phase emission detectors using liquid xenon working medium are extremely sensitive to ionization (down to single electrons), can be very massive (in tons scale) and provide active shielding from natural radioactivity in wall-les configuration of the readout system. That is why they found their unique application in the most sensitive experiments searching for cold dark matter in the form...
Andrea Chiavassa
(Università agli studi di Torino)
08/10/2015, 10:00
Cosmic rays
In this talk I will review and disucss the results obtained with the KASCADE-Grande in the study of the spectrum, chemical composition and anistropy of primary cosmic rays in the 10^16-10^18 eV energy range
Mr.
Patrick Berghaus
(DESY Zeuthen)
08/10/2015, 10:30
Cosmic rays
Large volume detectors designed for the detection of astrophysical neutrinos such as IceCube register cosmic ray-induced atmospheric muon bundles at a rate of several thousand events per second. Due to the large amount of surrounding material, the effective energy threshold for muons reaching the detector lies at approximately one TeV. By careful evaluation of event profiles it is possible to...
Prof.
Oscar Saavedra San Martin
(Torino University)
08/10/2015, 11:00
Cosmic rays
After a brief description of the main scientific findings at Chacaltaya, we presented the possibility of a network to search for Extensive Air Showers originated from primary cosmic rays at energies greater than 10^^15 eV. Such EAS could be measured in the existing high altitude laboratories deployed in the region of Latin America.
The Chacaltaya EAS array, located at 5230 m a.s.l. could be...
Prof.
Igor Yashin
(National Research Nuclear University MEPHI)
08/10/2015, 11:30
Cosmic rays
The TAIGA project is aimed at solving the fundamental problems of gamma-ray astronomy and physics of ultrahigh energy cosmic rays with the help of the complex of detectors, located in the Tunka valley (Siberia, Russia). TAIGA includes a wide-angle large area Tunka-HiSCORE array, designed to detect gamma-rays of ultrahigh energies in the range 20 - 1000 TeV and charged cosmic rays with energies...
Dr.
yury suvorov
(UCLA)
08/10/2015, 13:00
Nuclear physics and particle physics
The DarkSide-50 is the dual phase Liquid Argon Time Projection Chamber (LAr TPC) based experiment, builded for the direct dark matter search which currently is taking data in the underground facility at Laboratori Nazionali del Gran Sasso (LNGS).
The detector was assembled, tested and filled first with atmospheric Argon (in 2013) and took a successful two years run accumulating the exposure...
08/10/2015, 13:00
Prof.
A.A. Petrukhin
(MEPhI)
08/10/2015, 13:00
Cosmic rays
Экспериментальный комплекс НЕВОД включает в себя черенковский водный детектор, систему калибровочных телескопов и координатные детекторы. В докладе рассматриваются основные этапы создания экспериментального комплекса, направления исследований, полученные результаты, в том числе касающиеся решения мюонной загадки, а также перспективы его дальнейшего развития.
Mr.
Andrea Ianni
(Princeton University)
08/10/2015, 13:15
Nuclear physics and particle physics
The DarkSide Collaboration has started consideration of DarkSide-20k, a direct WIMP search with a Liquid Argon Time Projection Chamber (LAr-TPC) with an active (fiducial) mass of 23 (20) tonnes. The DarkSide-20k LAr-TPC will be deployed in the shield/veto facility already built in support of the DarkSide-50 experiment in the Gran Sasso underground laboratory (LNGS). DarkSide-20k will be a...
08/10/2015, 13:15
A.G. Bogdanov
(National Research Nuclear University MEPhI, Moscow, Russia)
08/10/2015, 13:15
Cosmic rays
Ключом к решению "мюонной загадки" – проблемы избытка мюонов в ШАЛ по сравнению с ожидаемым - может быть исследование поведения энергетических характеристик мюонной компоненты с изменением энергии первичных частиц. Представлены результаты измерений зависимостей энерговыделений наклонных групп мюонов в черенковском водном детекторе НЕВОД от зенитного угла и от локальной плотности мюонов. В...
08/10/2015, 13:30
Mr.
Augusto Mario Goretti
(INFN-LNGS)
08/10/2015, 13:30
Nuclear physics and particle physics
DarkSide 20k is a dark matter search experiment whose active target is argon in a double phase TPC. The residual internal background consists in the 39Ar isotope inside the target. The collaboration developed a strategy consisting in the extraction of Argon from underground CO2 wells, than distilled in a very tall cryogenic distillation column. DarkSide 50 already demonstrated the depletion in...
Mr.
Vasiliy Khomyakov
(National Research Nuclear University MEPhI)
08/10/2015, 13:30
Cosmic rays
Проведен анализ пространственного распределения черенковского света, генерируемого каскадными ливнями в ЧВД НЕВОД. Отбирались ливни, рожденные окологоризонтальными мюонами, треки которых определены с высокой точностью с помощью координатного детектора ДЕКОР.
Впервые экспериментально получены зависимости интенсивности черенковского света от глубины развития ливня на разных расстояниях от его оси.
Dr.
R.P. Kokoulin
(MEPhI)
08/10/2015, 13:45
Cosmic rays
Анализируются изменения интенсивности групп мюонов, образующихся в результате взаимодействия первичных частиц космических лучей с энергией порядка ПэВ и регистрируемых на поверхности Земли. Рассмотрены сезонные вариации интенсивности, барометрический и температурный эффекты, корреляции с высотой различных уровней остаточного атмосферного давления. Показано, что вариации интенсивности...
08/10/2015, 13:45
08/10/2015, 13:45
Cosmic rays
Dr.
N.S. Barbashina
(MEPhI)
08/10/2015, 14:00
Cosmic rays
В работе представлены результаты исследований вариаций потока мюонов космических лучей во время мощного форбуш-эффекта, зарегистрированного мюонным годоскопом УРАГАН 22 июня 2015 года. По угловому распределению потока мюонов получена зависимость амплитуды падения его интенсивности от энергии первичных частиц в области выше 10 ГэВ. Исследованы изменения этой зависимости на разных фазах развития...
08/10/2015, 14:00
Cosmic rays
Dr.
Alexander Kubankin
(Belgorod National Research University)
08/10/2015, 14:00
Nuclear physics and particle physics
Pyroelectric crystals, such as LiNbO3 or LiTaO3 being under influence of temperature gradient produce electric field up to 106 kV/cm. It was experimentally confirmed that the crystal installed in the chamber with residual gas pressure about 1 mTorr could be used for generation of X-Ray radiation [1,2] with energy up to about 100 keV, as well as electrons [3] and neutrons with energy 2.45 MeV...
Mrs.
Irene ARKHANGELSKAJA
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
08/10/2015, 14:15
Cosmic rays
Gamma-ray bursts duration distributions properties for events registered by experiments SMM/GRS, CGRO/BATSE, HETE2, WIND/KONUS, KONUS-WIND/VENERA 13 or 14, GRANAT/PHEBUS, GRANAT/SIGMA, Swift/BAT, RHESSI, ULYSSES, GRANAT/WATCH, Fermi/GBM are considered. GRBs observed since 1967 and now several thousends of events were listed in more than 15 catalogues.
Gamma-ray bursts duration distribution...
Mr.
Oleg Titov
(NRC "Kurchatov Institute")
08/10/2015, 14:15
Nuclear physics and particle physics
We discuss the possibility to produce a modulated monochromatic neutrino beam. Monochromatic neutrinos can be obtained in electron capture by nuclei of atoms or ions. Hydrogen-like ions are of particular interest. It is shown that monochromatic neutrino beam from such hydrogen-like ions with nuclei of non-zero spin can be modulated because of different probabilities of electron capture from...
Dr.
Irina Bakunina
(National Research University Higher School of Economics)
08/10/2015, 14:30
Cosmic rays
Irina A. Bakunina (1), Vladimir E. Abramov-Maximov (2), Alexander A. Solov’ev (2)
(1) National Research University Higher School of Economics, 25/12 B. Pecherskaja ul., Nizhny Novgorod 603155, Russia
rinbak@mail.ru
(2) Central Astronomical Observatory at Pulkovo, Russian Academy of Sciences, Pulkovskoe chaussee 65/1, St Petersburg 196140, Russia
beam@gao.spb.ru
This work presents the...
Mr.
Vasiliy Savin
(Yaroslavl Higher Military School of Air Defence)
08/10/2015, 14:30
Cosmic rays
The processes of neutrino production of electron positron pairs, $\nu \bar\nu \to e^- e^+$ and $\nu \to \nu e^- e^+$, in a magnetic field of arbitrary strength, where electrons and positrons can be created in the states corresponding to excited Landau levels, are analysed. The mean values of the neutrino energy losses due to these processes are calculated. The results can be applied for...
Mr.
I.I. Astapov
(MEPhI)
08/10/2015, 15:00
Cosmic rays
В отличие от большинства наземных детекторов космических лучей, мюонный годоскоп УРАГАН (НИЯУ МИФИ) позволяет исследовать не только интегральный темп счета зарегистрированных частиц, но и пространственно-угловые характеристики потока мюонов на уровне Земли. В докладе приводится анализ наиболее мощных корональных выбросов масс (КВМ), произошедших в 2015 году, фронт которых был направлен в...
Ksenia Kaportseva
(MSU)
08/10/2015, 15:00
Cosmic rays
Review presented of recent publications about experimental data, theoretical models and interpretations. The sources of electrons in the heliosphere are numerous and mainly related to the Sun, Interpalanetary and interstellar medium, planets and other astrophysical objects. The energy spectra of electrons from thermal to highest energies are composed from different components due to transport...
Prof.
Maxim Khlopov
(MEPHI/APC)
08/10/2015, 15:00
Nuclear physics and particle physics
The overview of the main problems and methods of cosmoparticle physics, studying fundamental relationship of micro- and macro-worlds will be accompanied by the demonstration of the facility of Virtual Institute of Astroparticle physics (VIA) activity as a well proven basis for scientific collaborative work and education at distance.
Prof.
Rita Bernabei
(dipartimento di Fisica, Univ. Roma Tor Vergata, via della Ricerca Scientifica 1, 00139, Roma, Italia)
08/10/2015, 15:10
Nuclear physics and particle physics
The present status of direct detection of Dark Matter (DM) particles will be summarized, with particular care to the DAMA model-independent DM annual modulation results. Arguments on comparisons will be addressed showing that there is large room for compatibility between positive signals and negative hints, considering both the different adopted procedures and techniques, the different...
08/10/2015, 15:15
Dr.
V.V. Shutenko
(MEPhI)
08/10/2015, 15:15
Cosmic rays
Поток первичных заряженных космических лучей (ПКЛ) модулируется магнитным полем гелиосферы, на состояние которого влияют различные гелиосферные процессы. После взаимодействия ПКЛ с ядрами атомов атмосферы Земли эти модуляции передаются потоку вторичных мюонов. Мюонный годоскоп УРАГАН позволяет отслеживать изменение не только интенсивности потока мюонов, но и его углового распределения в...
Prof.
Leonid Lazutin
(L.)
08/10/2015, 15:30
Cosmic rays
Dynamics of the latitudinal profiles penetrating into magnetosphere solar protons is studied using particle spectrometer data on board of the low latitude polar satellite CORONAS-F. Formations of several different types of the profiles during magnetic storms are considered.
Mr.
D.M. Gromushkin
(MEPhI)
08/10/2015, 15:30
Cosmic rays
Проект новой установки для регистрации атмосферных нейтронов (УРАН) основан на новом подходе к исследованию широких атмосферных ливней (ШАЛ). Установка включает 72 эн-детектора, способных регистрировать сразу две основные компоненты ШАЛ: адронную через тепловые нейтроны и электромагнитную по групповому прохождению заряженных частиц. В качестве регистратора нейтронов и заряженных частиц...
dmitri semikoz
(APC)
08/10/2015, 15:40
Nuclear physics and particle physics
Neutrino telescope IceCube has recently discovered astrophysical neutrinos with energies in the 10 TeV – 3 PeV range. It challenged existed theoretical models due to unexpected soft spectrum 1/E^{2.5} of neutrinos. Together with limits from diffuse gamma-ray flux measured with Fermi experiment this excluded most of existed predictions. In my talk I'll review theoretical models, which can...
08/10/2015, 15:45
Cosmic rays
Mr.
I.A. Shulzhenko
(MEPhI)
08/10/2015, 15:45
Cosmic rays
В настоящее время на базе Уникальной научной установки «Экспериментальный комплекс НЕВОД» создается детектор кластерного типа НЕВОД-ШАЛ, предназначенный для регистрации широких атмосферных ливней в диапазоне энергий 10^15-10^17 эВ, который соответствует области излома энергетического спектра первичных космических лучей. В состав детектора НЕВОД-ШАЛ общей площадью ~ 2×10^4 кв.м. будет входить...
Prof.
Martin Bucher Bucher
(APC, Universite Paris 7)
08/10/2015, 15:55
Nuclear physics and particle physics
The ESA Planck satellite, launched in 2009, produced full-sky maps of the microwave sky
in both temperature and polarization over a broad range of frequencies.
An analysis of these maps allows us to characterize the initial
conditions of our universe. The Planck Collaboration has released
two sets of papers with results on cosmology: one in 2013
and another in 2015. I will discuss the...
Mr.
N.V. Ampilogov
(MEPhI)
08/10/2015, 16:00
Cosmic rays
В НИЯУ МИФИ создан новый сцинтилляционный мюонный годоскоп для изучения вариаций потока мюонов космических лучей. При сравнимых основных характеристиках (эффективной площади, точности реконструкции треков мюонов, величине «живого» времени и пр.) с уже существующими в НИЯУ МИФИ годоскопами (ТЕМП и УРАГАН), отличительной особенностью данного детектора являются модульная конструкция,...
Mrs.
Irene ARKHANGELSKAJA
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
08/10/2015, 16:00
Cosmic rays
The gamma-ray background physical origin for low altitude orbits defined by:ndiffuse cosmic gamma-emission, atmospheric gamma-rays, gamma-emission formed in interactions of charged particles (both prompt or activation) and transient events such as electrons precipitations and solar flares. The background conditions in the energy range from 0.1 MeV up to several MeV for low and high inclination...
Prof.
Juan Jose GOMEZ-CADENAS
(Instituto de Física Corpuscular, Valencia, Spain)
08/10/2015, 16:15
Mrs.
Irina Knyazeva
(Pulkovo Observatory)
08/10/2015, 16:15
Cosmic rays
Mr.
E.A. Zadeba
(MEPhI)
08/10/2015, 16:15
Cosmic rays
В НИЯУ МИФИ разрабатывается крупномасштабный координатно-трековый детектор на дрейфовых камерах для регистрации окологоризонтального потока мюонов космических лучей сверхвысоких энергий совместно с экспериментальным комплексом НЕВОД. На данный момент создан прототип детектора (КТУДК), состоящий из 16 дрейфовых камер, формирующих две координатные плоскости, установленные с противоположных...
08/10/2015, 16:30
08/10/2015, 16:45
Dr.
Nikolay Topchiev
(Lebedev Physical Institute)
09/10/2015, 08:00
Cosmic rays
The GAMMA-400 gamma-ray telescope with excellent angular and energy resolutions is designed to search for signatures of dark matter in the fluxes of gamma-ray emission and electrons + positrons. Precision investigations of gamma-ray emission from Galactic Center, Crab, Vela, Cygnus, Geminga, and other regions will be performed, as well as diffuse gamma-ray emission, along with measurements of...
Dr.
Alexey Bakaldin
(NRNU MEPhI)
09/10/2015, 08:25
Cosmic rays
The description of the onboard experiment MONICA for study of the fluxes of cosmic ray energetic ions from H to Ni in the energy range 10-300 MeV/n in near-Earth space is presented.
The MONICA main scientific goal is the measurement of the ion charge states, as well as elemental, isotope composition and energy spectra of Solar Energetic Particle (SEP) fluxes for individual SEP events, and...
Dr.
Vladimir Mikhailov
(NRNU MEPHI)
09/10/2015, 08:40
Cosmic rays
Measurements of electron and positron spatial distributions in energy range from 80 MeV to several GeV below the geomagnetic cutoff rigidity were carried out using the PAMELA magnetic spectrometer.
The instrument is installed on board the Resurs-DK satellite which was launched June 15th 2006 on an elliptical orbit with the inclination 70 degrees and the altitude 350-600 km.
The procedure...
Prof.
Galina Bazilevskaya
(Lebedev Physical Institute)
09/10/2015, 09:05
Cosmic rays
The orbital spectrometer PAMELA is the first instrument allowing direct measurement of solar relativistic particles. Before such information was obtained from the ground-based installations – neutron monitors which detected the secondary particle component generated by the solar energetic particles (SEP) in the Earth’s atmosphere. Moreover, the data in the SEP energy range of several hundred...
Dr.
Wolfgang Menn
(University of Siegen)
09/10/2015, 09:30
Cosmic rays
On the 15th of June 2006, the PAMELA satellite-borne experiment was launched
from the Baikonur cosmodrome and it has been collecting data since July 2006. The apparatus comprises a time-of-flight system, a silicon-microstrip magnetic spectrometer, a silicon-tungsten electromagnetic calorimeter, an anti-coincidence system, a shower tail counter scintillator and a neutron detector. The...
Dr.
Mirko Boezio
(INFN - Sezione di Trieste)
,
Dr.
Wolfgang Menn
(University of Siegen)
09/10/2015, 10:30
Cosmic rays
The nine years of data taking in space of the experiment PAMELA are
providing interesting information concerning the origin and
propagation of both galactic and solar cosmic rays.
The measured antiparticle component of the cosmic radiation shows
features that can be interpreted in terms of dark matter annihilation or
pulsar contribution. The precise measurements of the energy spectra...
Mr.
Riccardo Munini
(INFN Sez. Trieste)
,
Dr.
Valeria Di Felice
(INFN Tor Vergata)
09/10/2015, 11:00
Cosmic rays
The satellite-borne PAMELA experiment has been continuously collecting data
since it was launched on 15th June 2006, from the Baikonur cosmodrome.
The instrument, particularly suited for particle and antiparticle identification,
has detected the charged component of cosmic rays over a wide energy range
and with unprecedented statistics.
The instrumental characteristics and the...
Dr.
Alessandro Bruno
(Department of Physics, University of Bari, Italy)
09/10/2015, 11:30
Cosmic rays
The PAMELA space experiment is providing first direct observations of Solar Energetic Particles (SEPs) with energies from about 80 MeV to several GeV in near-Earth orbit, bridging the low energy measurements by other spacecrafts and the Ground Level Enhancement (GLE) data by the worldwide network of neutron monitors. Its unique observational capabilities include the possibility of measuring...
Prof.
Kirill Bronnikov
(VNIIMS)
09/10/2015, 13:00
Nuclear physics and particle physics
It is known that the vortex gravitational field in rotating cylindrically symmetric configurations leads to an exotic contribution in the total effective stress-energy tensor, which is favorable for the formation of cylindrical wormhole throats. This leads to an opportunity to obtain wormholes without exotic matter, and there are examples of such exact wormhole solutions (including vacuum ones...
Dr.
Alexander Karelin
(NRNU MEPhI)
09/10/2015, 13:00
Cosmic rays
In the framework of the PAMELA experiment the features of the large-scale anisotropy has been measured within the energy range 1-20 TeV/n. The measurements was carried out with the use of the calorimeter on the base of the hypothesis about the existence of the dipole anisotropy. The amplitude and phase of the dipole were obtained. The results are in agreement with the ground-based...
Mr.
Sergey on behalf on PAMELA collaboration Koldobskiy
(NRNU MEPhI)
09/10/2015, 13:15
Cosmic rays
In this work new measurements of reentrant albedo deuteron fluxes in the PAMELA experiment are presented. PAMELA is an international experiment aimed on measurement of cosmic ray particles in wide energy range. In particular, PAMELA detectors are able to identify deuterons. In this work the results of trajectory reconstruction analysis for reentrant deuterons are presented for particles with...
Mr.
Pavel Korolyov
(PFUR, Moscow)
09/10/2015, 13:15
Nuclear physics and particle physics
S.V. Bolokhov, K.A. Bronnikov, P.A. Korolyov, M.V. Skvortsova
We construct explicit examples of globally regular static, spherically
symmetric solutions in general relativity with scalar and electromagnetic
fields, describing (1) traversable wormholes with flat and AdS asymptotics
and (2) regular black holes, in particular, black universes. (A black universe
is a regular black hole with...
victor novikov
(mephi,itep)
09/10/2015, 13:30
Nuclear physics and particle physics
We demonstrate that non-zero mass difference between electron and positron that breaks CPT-symmetry produces also an electric charge non-conservation and non-zero photon mass.Cosmological bounds on
non-zero photon mass can be transformed into bounds on electron-positron mass difference that 10-15 order of magnitude stronger than existing direct bounds
Ms.
Svetlana Rodenko
(National Research Nuclear University MEPhI)
09/10/2015, 13:30
Cosmic rays
Experimental measurements of the antiproton flux in the near Earth space are important for astrophysics, including the exploration of the hypothetical "dark" matter particle properties. From June 2006 up to the present time, the scientific experiment PAMELA on board the spacecraft Resurs-DK1 was carrying out the study the various cosmic rays components in the wide energy range. PAMELA...
Dr.
Andrew Koshelkin
(National Research Nuclear University)
09/10/2015, 13:45
Nuclear physics and particle physics
The $U_L(2)\bigotimes U_R(2) $ gauge model for the unified theory
of the electromagnetic and weak interactions which is free from
the auxiliary self-interaction scalar field is developed. Due to
breaking the initial symmetry, the $SU_L(2)\bigotimes U_R(1) $
Lagrangian is derived. The obtained $SU_L(2)\bigotimes U_R(1) $
Lagrangian contains all the terms corresponding to the free...
Prof.
Vadim Surkov
(National Research Nuclear University MEPhI)
09/10/2015, 13:45
Cosmic rays
Penetration of Schumann resonances energy from the Earth-ionosphere resonance cavity into the circumterrestrial space is examined. This study focuses on estimates of Alfvén wave amplitude and spectra in the frequency range of 7-50 Hz which can be observed by low-orbiting satellites. Differences in Schumann resonances observation conditions between the nighttime and sunlit sides of the...
Andrey Mayorov
(National Research Nuclear University MEPhI)
,
Mr.
Anton Lukyanov
(Yaroslavl State P.G. Demidov University)
,
Mr.
Vladislav Alekseev
(Yaroslavl State P.G. Demidov University)
,
Mr.
Yuri Bogomolov
(Yaroslavl State P.G. Demidov University)
09/10/2015, 14:00
Cosmic rays
The sampling imaging electromagnetic calorimeter of ~ 16.3 radiation lengths and ~ 0.6 nuclear interaction length designed and constructed by the PAMELA collaboration as a part of the large magnetic spectrometer PAMELA. Calorimeter consists of 44 single-sided silicon sensor planes interleaved with 22 plates of tungsten absorber (thickness of each tungsten layer 0.26 cm). Silicon planes are...
Prof.
Sergey Rubin
(MEPhI)
09/10/2015, 14:00
Dr.
Anastasiya Shitova
(Yaroslavl State P.G. Demidov University)
09/10/2015, 14:15
Cosmic rays
Recent experiments in high enegry cosmic ray physics, PAMELA and AMS-02, excite new interest to the mechanisms of generation of galactic antiparticles.
In spite of the fact that global picture coincides with the predictions of the standard theory, there are some black spots stimulating scientists to involve into research a particularly new physics like dark matter.
In the present work, we...
Mr.
Alexandr Dmitriev
(NRNU MEPHI)
09/10/2015, 14:15
Nuclear physics and particle physics
Fermions are considered in a multidimensional space with two extra dimensions. Fermion Lagrangian contains coupling to a metric of deformed extra space. We show that the point-like defect on a space with topology of sphere leads to fermion interaction with such defect and calculate cross section of a fermion scattering on such defect.
Mr.
Sergey Fedotov
(NRNU MEPHI)
09/10/2015, 14:30
Cosmic rays
The application of the coordinate compensation method was examined for the detectors of the time-of-flight system in the high energy gamma ray telescope. The passage of gamma rays with an energy of 1000 GeV through a converter-tracker and through the time-of-flight system was simulated for the typical telescope. Three options of the time-of-flight system were considered with using the...
Ekaterina Ramakoti
(NRNU MEPhI)
09/10/2015, 14:30
Cosmic rays
The South Atlantic Anomaly (SAA) dynamics in high-energy proton fluxes was investigated from 2006 to 2014 on the bases ARINA experiment data. This experiment on board the Resurs-DK1 satellite is carried out since 2006 and till now. The instrument detects protons in an energy range from 30 MeV to 100 MeV. The drift of positions (longitudes) of the proton flux maximum and the Earth's IGRF model...
Mr.
Maxim Kheymits
(NRNU MEPhI)
09/10/2015, 14:30
Cosmic rays
Gamma-telescope GAMMA-400 is designed to measure fluxes of γ-rays and the electron–positron cosmic ray component possibly associated with dark matter particles annihilation or decay; and to search for and study in detail discrete γ-ray sources, to investigate the energy spectra of Galactic and extragalactic diffuse γ-rays, and to study γ-ray bursts (GRB) and γ-rays from the active Sun....
Alina Valieva
(National Research Nuclear University MEPhI)
09/10/2015, 14:30
Cosmic rays
The development of tritium identification methods in the PAMELA experiment are discussed in this work. Particle magnetic rigidity, velocity and energy losses in time-of-flight and magnetic spectrometer detectors were used for the tritium identification. Here we discuss the method of separation of tritium on the background of other particles. Criteria for selection of tritium nuclei in the...
Mr.
Maxim Kheymits
(NRNU MEPhI)
09/10/2015, 14:30
Cosmic rays
Studying high-energy (> 50 GeV) cosmic gamma radiation raises a problem of selection of neutral gamma-rays from a background of charged particles. The problem is embarrassed by the *backsplash* effect. The backsplash consists, in the main, of low‑energy (1 MeV) secondary photons moving backwards and is produced by any high-energy gamma quantum. A charged-particle rejection method using the...
Mr.
Ekaterina Esipova
(NRNU MEPhI)
09/10/2015, 14:30
Nuclear physics and particle physics
Evolution of dark matter, consisting of WIMP- and SIMP-components, possessing Coulomb-like interaction, which implites in its term existance of termal background of this interaction carriers, is considered. Temperature of SIMP-component is estimated as a function of time.
Ms.
Victoria Likhacheva
(National Research Nuclear University MEPhI)
09/10/2015, 14:30
Cosmic rays
The additional detector is located between calorimeters of high energy gamma-ray telescope to monitor the backsplash effect.The simulation results of total absorbed energy in this detector are presented. The temporal and spatial characteristics of the total absorbed energy are presented for protons and gamma rays with energies of 500 and 1000 GeV. These results are useful to minimize the...
Dr.
Sergey Koldashov
(MEPhI)
09/10/2015, 14:30
Cosmic rays
Today a problem of acceleration and transport of charged particles in solar active processes (flares, shocks) is important as usual. Some current and future space experiments (ACE, MONICA) are aimed for the measurement of a number of physical characteristics of solar energetic particles (SEP) such as intensity, composition, energy spectra et al. Among them there is a poorly investigated charge...
Ms.
Alina Timina
(NRNU MEPhI)
09/10/2015, 14:30
Cosmic rays
This paper describes the functional characteristic of the central processor module, which will be designed and can be used for gamma-ray Telescope in gamma-astronomical observatory and in acceleration high energy physics.
As part of the installation will be Scientific Data Acquisition System (SDAS), one of the main modules will be developed central processor module MFSDAS (Module For...
Alexey Grobov
(NRNU MEPhI)
09/10/2015, 14:30
Nuclear physics and particle physics
We propose a unified model of primordial black holes and soliton dark matter formation. Dynamic of spherically symmetric clumps of scalar field is considered in Newtonian approximation. The formation of hidden mass of the Universe is discussed. Numerical solution of the system of interacting scalar and gravitational fields is used to obtain the mass of a clumps.
Prof.
Vyacheslav Dokuchaev
(Institute for Nuclear Research of the Russian Academy of Sciences)
09/10/2015, 15:00
Nuclear physics and particle physics
We describe a promising method for measuring the total dark matter mass near a supermassive black hole at the Galactic center based on observations of nonrelativistic precession of the orbits of fast S0 stars. An analytical expression for the precession angle has been obtained under the assumption of a power-law profile of the dark matter density. The awaited weighing of the dark matter at the...
Dr.
Alexey Guskov
(JINR)
09/10/2015, 15:00
Cosmic rays
The scientific apparatus “Gamma-400” designed for study of hadron and electromagnetic components of cosmic rays will be launched to elliptic orbit with an apogee of about 300 000 km and perigee of about 500 km. Such a configuration of the orbit allows it to cross periodically the radiation belt and the outer part of magnetosphere. We discuss the possibility to use hybrid pixel detecters based...
Alexey Grobov
(NRNU MEPhI)
09/10/2015, 15:15
Mr.
Evgeniy Chasovikov
(NRNU MEPHI)
09/10/2015, 15:15
Cosmic rays
The results of low-energy charged particles passage through GAMMA-400 gamma-telescope thermal insulation and two-layer plastic scintillation detectors used as anticoincidence shield are presented. An existing GEANT4 GAMMA-400 model is used. Effects of several various types of thermal insulation on charged particle passage are investigated. These data will be used to determine the effect of...
Mr.
Ruslan Budaev
(NRNU MEPhI)
09/10/2015, 15:30
Nuclear physics and particle physics
We are going to show that any conventional decaying dark matter model, providing an explanation of cosmic antiparticle excess observed by PAMELA and AMS-02, inevitably faces the contradiction with isotropic diffuse gamma-ray background, measured by FERMI/LAT.
Dr.
Alexey Leonov
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
09/10/2015, 15:30
Cosmic rays
The GAMMA-400 gamma-ray telescope is intended to measure the fluxes of gamma-rays and cosmic-ray electrons and positrons in the energy range from 100 MeV to several TeV. Such measurements concern with the following scientific tasks: investigation of point sources of gamma-rays, studies of the energy spectra of Galactic and extragalactic diffuse emission, studies of gamma-ray bursts and...
Mrs.
Irene ARKHANGELSKAJA
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
09/10/2015, 15:45
Cosmic rays
GAMMA-400 (Gamma Astronomical Multifunctional Modular Apparatus) will be the new generation satellite g-observatory.
Gamma-telescope GAMMA-400 consists of anticoincidence system (top and lateral sections - ACtop and AClat), the converter-tracker (C), time-of-flight system (2 sections S1 and S2), position-sensitive calorimeter CC1 makes of 2 strips layers and 2 layers of CsI(Tl) detectors,...
Mr.
Maxim Laletin
(NRNU MEPhI)
09/10/2015, 15:45
Nuclear physics and particle physics
As we are going to show, some self-interacting dark matter models may provide an intriguing solution to the "cosmic antiparticle excess vs. isotropic diffuse gamma-ray background" problem.
Ms.
Mariya Lizunova
(ITEP &amp; NRNU "MEPhI")
09/10/2015, 16:00
Nuclear physics and particle physics
We consider a model with a real scalar field with polynomial selfinteraction of the $4^{\text{th}}$ power and a coupled scalar triplet. We demonstrate that there is an analytical solution in the form of domain wall with coupled localised configuration of the scalar triplet. We analyse this new solution and also discuss orientational and translational moduli of the configuration.
Mr.
Andrey Arkhangelskiy
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
09/10/2015, 16:00
Cosmic rays
A description of the control and data transfer management system for scientific apparatus involved in the GAMMA-400 space project is given. The technical capabilities of all specialized equipment to provide the function of the scientific instrumentation and satellite support systems are unified in a single structure. The correctness of the proposed and implemented structure has been verified...
Ms.
Mariya Lizunova
(ITEP &amp; NRNU "MEPhI")
09/10/2015, 16:15
Nuclear physics and particle physics
We study excitations of solitary waves - the kinks - in scalar models with
degree eight polynomial self-interaction in $(1+1)$ dimensions. We perform
numerical studies of scattering of two kinks with an exponential asymptotic
off each other and analyse the occurring resonance phenomena. We connect these
phenomena to the energy exchange between the translational and the vibrational
modes...
Mr.
Maksim Gorbunov
(SRISA)
09/10/2015, 16:15
Cosmic rays
M.S. Gorbunov, S.G. Bobkov, O.V. Serdin, A.I. Arkhangelskiy, N.P. Topchiev
a Scientific Research Institute of System Analysis of the Russian Academy of Sciences, Nahimovskij Prospect 36/1, Moscow, 117218, Russia
b National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe highway 31, Moscow, 115409, Russia
c P.N. Lebedev Physical institute of the...
Mr.
Temir Zharaspayev
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
09/10/2015, 16:30
Cosmic rays
Electron bursts are well-known phenomena of fast increase in particle fluxes in near-Earth space. Powerful local geophysical events like earthquakes or thunderstorms can induce precipitation of electrons with defined energy spectrum from radiation belt, which would be registered as fast increase in particle count rate on board the low orbit satellite.
The process of longitudinal drift of...
143.
Investigation of dynamic range of calorimeter scintillation detector of the gamma-ray telescope
Mr.
Artyom Solodovnikov
(NRNU MEPhI)
09/10/2015, 16:45
Cosmic rays
The main structure of the cosmic gamma-ray telescope GAMMA-400 which currently being in ground testing mode suggests the using of the system of fast two-layer scintillation detector for electromagnetic showers detection. This article will describes a basic method and shows a basic scheme of the ground testing measurement. Also it contains the main result reached by this test.
10/10/2015, 08:00
Dr.
Eduard Atkin
(National Research Nuclear University MEPhI)
10/10/2015, 08:30
Methods of experimental physics
Application Specific Integrated Circuits (ASICs) are one of the key complex technologies available to detector designers. A number of factors make ASICs essential to Particle Physics and Astrophysics. These include: integration scale, low power dissipation, radiation tolerance.
In order to make possible future experiments in the intensity, cosmic, and energy frontiers ASICs should provide...
Dr.
Givoletti Jacopo
(CAEN Spa)
10/10/2015, 09:00
Methods of experimental physics
CAEN Spa (www.caen.it) is a worldwide recognized brand in the design of electronic instrumentation for the physics community. CAEN equipment is used in all the most important laboratories and experiments in the world. From HEP to Astroparticle to Dark Matter to Nuclear physics, CAEN has products and solutions to offer. In the recent years CAEN has been investing a lot of effort in R&D...
Mr.
Oleg Shumkin
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
10/10/2015, 09:30
Methods of experimental physics
Abstract — An all-digital phase-locked loop (ADPLL) was implemented in 180 nm CMOS technology. The proposed ADPLL uses a novel digitally controlled oscillator to achieve 1 ps resolution. The pure digital phase locked loop is attractive because it is less sensitive to noise and operating conditions than its analog counterpart. The proposed ADPLL can be easily ported to different process as a...
Mr.
Dmitry Normanov
(NRNU Mephi)
10/10/2015, 09:30
Methods of experimental physics
The development architecture of a multichannel data-driven ASIC is presented. It provides the selection of useful events at an early stage of reading out detector signals.
The architecture is based on fast cross-point switches of analog signals, followed by their digitization by a limited set of ADCs and high-speed output data serialization. Such approach reduces the number of subsequent...
Mr.
Pavel Ivanov
(NRNU MEPhI)
10/10/2015, 09:30
Methods of experimental physics
Data readout system of multichannel data-driven ASIC, requiring high-speed (320 Mb/s) output data serialization is described. Its structure, based on a limited number of FIFO blocks, provides a lossless data transfer.
The solution has been realized as a separate test IP block in the prototyped 8 channel ASIC, intended for muon chamber of CBM experiment at FAIR. The block was developed in the...
Mr.
Pavel Ivanov
(NRNU MEPhI)
,
Mr.
Sergey Vinogradov
(NRNU "MEPhI")
10/10/2015, 09:30
Methods of experimental physics
We consider the method of creating a parametrized Space model of an N-channel transistor with a gate of enclosed layuot. This model provide an increased radiation tolerance. Formulas and examples of engineering calculation for the operation of models in the computer-aided Design environment of Cadence Vitruoso. Calculations are made for the CMOS technology with 180 nm design rules of the UMC.
157.
Data treatment system in the ALFA-ELECTRON space experiment onboard International space station
Mr.
Alexey BATISCHEV
(NRNU MEPhI)
10/10/2015, 09:30
Methods of experimental physics
The system of data collection, pre-processing and scientific information transfer on
Earth from the onboard charged particle spectrometer is described. The system
consists of high-speed units for converting of amplitude information into digital
code, the logical block of information on the operation of the spectrometer, and a
distributed system for collecting, processing and...
Mr.
Denis Petrenko
(NRNU MEPhI)
10/10/2015, 09:30
Methods of experimental physics
High voltage supply for xenon gamma spectrometer was considered. Design of a heat-stable high voltage supply is shown. The developed high voltage supply and breadboard model were compared in terms of time analysis.
Mr.
Denis Petrenko
(NRNU MEPhI)
10/10/2015, 09:30
Methods of experimental physics
Shaping and digital processing of xenon gamma-spectrometer signals was considered. Digital processing influence on the value of the spectrometric system of xenon gamma-spectrometer was shown.
Ms.
Marina Smirnova
(NRNU MEPhI)
10/10/2015, 09:30
Methods of experimental physics
Results of developing of a gamma-ray detector based on LaBr3(Ce) scintillation crystal for neutron capture therapy are presented. A energy resolution of the detector measured by photomultiplier tube Hamamatsu R6233-100 is showed. It was 2,9% for gamma line 662 keV from a source 137Cs. For radiative capture gamma line of isotope 10В (478 keV) and annihilation line (511 keV) the value...
Mr.
Malankin Evgeny
(NRNU MEPHI)
10/10/2015, 09:30
Methods of experimental physics
In the large-scale high energy physics and astrophysics experiments multi-channel read-out application specific integrated circuits (ASICs) are widely used. The ASICs for such experiments is a complicated system, which usually includes both analog and digital building blocks. A trend to a complication of the system architecture, increase of the channels and building blocks amount in the chip...
Mr.
Denis Petrenko
(NRNU MEPhI)
10/10/2015, 09:30
Methods of experimental physics
Review of modern well-type detectors and their main characteristics is presented. Possibility of creation of a well-type gamma detector based on xenon gamma-ray spectrometer was shown. The results of modeling of xenon well-type detectors are presented.
Mr.
Anatoly Mosichkin
(Yaroslavl State P.G. University)
10/10/2015, 09:30
Mr.
Vitaly Shumikhin
(NRNU MEPhI)
10/10/2015, 09:30
Methods of experimental physics
The paper describes the read-out ASIC for silicon X-ray drift detectors. The ASIC has been designed in CMOS 0.35 um technology and contained two read-out channels. Each channel include preamplifier and shaper. Preamplifiers optimized for operation with detectors, having capacitances of 100 fF. The 6-th order shaper have a controllable time constants (0.5 – 8 us).
Mr.
Malankin Evgeny
(NRNU MEPHI)
10/10/2015, 09:30
Methods of experimental physics
A low-power two-phase peak detector with wide dynamic range was developed. The PD was designed on the basis of CMOS UMC 180 nm process. This block is considered as a part of the read-out electronics of the CBM experiment at upcoming FAIR accelerator (Germany). Peak detector has the folowing advantages: wide dynamic range of 5 - 1000 mV, low power consumption of 500 uW. The designed PD meets...
Mr.
Malankin Evgeny
(NRNU MEPHI)
10/10/2015, 10:00
Methods of experimental physics
A front-end prototype ASIC for muon chambers is presented. ASIC was designed and prototyped in CMOS UMC MMRF 180 nm process via Europractice. The chip includes 8 analog processing channels, each consisting of preamplifier, two shapers (fast and slow),differential comparator and an area efficient 6 bit SAR ADC with 1.2 mW power consunption at 50 Msps. The chip also includes the threshold DAC...
Mr.
Pavel Parygin
(NRNU MEPhI)
10/10/2015, 10:00
Methods of experimental physics
Silicon photomultipliers (SiPM) are very promising semiconductor photon sensitive devices with high gain. However, the possibility of using SiPMs in some areas is limited by radiation tolerance.
Synopsys TCAD software allows simulating of microelectronic devices and their physical
characteristics.
Simulating of manufacturing technology of SiPMs has been made. Experimental samples...
Mr.
Eugen Engelmann
(Universität der Bundeswehr München)
10/10/2015, 10:15
Methods of experimental physics
Despite several advantages of Silicon Photomultipliers (SiPM) over Photomultiplier Tubes (PMT) like the increased photon detection efficiency (PDE), the compact design and the insensitivity to magnetic fields, the dark count rate (DCR) of SiPM is still a large drawback. Especially concerning applications with the need of large photosensitive areas or applications for which cooling of the...
Prof.
Yuri Volkov
(NRNU MEPhI)
10/10/2015, 10:15
Methods of experimental physics
The results of analyzing literary sources on the design of microcircuits of multichannel radiation detec-tor signal acquisition and processing in large physical experiments have been presented. There are considered such parameters of microcircuits, as the number of signal processing channels, power con-sumption per channel, noise level, input charge conversion factor (for the linear part of...
Mr.
Ivan Bulbakov
(NRNU MEPhI)
10/10/2015, 10:30
Methods of experimental physics
Design of SLVS chip-to-chip communication transmitter/receiver IP block in 180 nm UMC MMRF CMOS process is presented. This block has been developed for study a data transmission over PCBs and/or electrical cables (lines) of few meters length at rates up to 320 Mb/s. Schematic for on-chip testing is also presented. This blocks is used for communication between front-end ASICs and DAQ system.
Mr.
Pavel Buzhan
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
10/10/2015, 10:30
Methods of experimental physics
Geiger discharge for a single cell and real SiPMs for under- and oversaturation light intensities has been investigated.
It has been shown that not only signal amplitude but even signal charge rises with increasing of light intensity for single SiPM cell illuminated by high intensity light flash for constant applied overvoltage.
This effect can be explained by creation of multiple avalanche...
Dr.
Alexander Voronin
(SINP MSU / NRNU MEPhI)
10/10/2015, 10:45
Methods of experimental physics
The main goal of the NUCLEON satellite mission is the direct measurements of the elemental energy spectra of high-energy (${10}^{11}$ - ${10}^{15}$ eV) cosmic rays.
The analog 32 channel ASIC with unique high dynamic range (1 – 40 000 mip) has been developed for the electromagnetic minicalorimeter of the NUCLEON project, of about 3000 channels in total. The ASIC allows to record signals of...
Dmitry Mironov
(MEPhI)
10/10/2015, 10:45
Methods of experimental physics
The scintillator tiles with direct readout by silicon photomultipliers (SiPM) have been studied. The impact of the surface in front of the SiPM on the light yield and its uniformity has been studied. The different geometries, including geometries with a dimple in front of the SiPM were studied. The tiles with the optimal dimple design show the quality of
response comparable to the tiles with...
Anastasia Berdnikova
(NRNU MEPhI)
10/10/2015, 11:00
Methods of experimental physics
The miniature gamma counter based on cylinder shape LaBr3(Ce) crystal (4 mm diameter and 10 mm length) and SensL FC30035 silicon photomultiplier (SiPM) is introduced. The main counter characteristics such as relative efficiency, energy range, LaBr3(Ce) own radioactivity and energy resolution are presented as well. Capability of using such detector for gamma spectrometry applications is discussed.
Dr.
Alexander Glyanenko
(National Nuclear Research University “MEPHI”)
10/10/2015, 11:00
Methods of experimental physics
Problems of scientific devices control (for example, fine control of measuring paths), collecting auxiliary (service information about working capacity, conditions of carrying out experiment, etc.) and preliminary data processing are actual for any space device. Modern devices for space research it is impossible to imagine without devices that didn't use digital data processing methods and...
Mrs.
Anastasia Berdnikova
(NRNU MEPhI)
10/10/2015, 11:15
Methods of experimental physics
To determine the depth of the area of radiopharmaceutical accumulation a method of simultaneous recording of two lines of gamma rays of different energies and quantitative comparison of the intensity of these lines on the surface of the patient's body is provided. Since the coefficient of linear absorption of gamma radiation in the medium depends not only on the characteristics of the medium,...
Mr.
Dmitry Philippov
(NRNU MEPhI)
10/10/2015, 11:30
Methods of experimental physics
New generation of detectors for nuclear medicine will be based on Silicon Photomultipliers (SiPM's) due to their high gain, compact size, low weight and low operating voltage. The one main problem of SiPM's is presence of noise factors such as dark count rate, crosstalk and afterpulses. In such conditions it needs to develop the algorithm of positioning reconstruction allows to reach spatial...
Mr.
Evgeny Lazarenko
(NRNU MEPHI)
10/10/2015, 11:45
Methods of experimental physics
The utilization of silicon photomultipliers (SiPM) in the detection module opens up a new possibilities of using a gamma camera. Two prototypes of gamma camera were developed. In the first prototype takes place a direct reading of monolithic scintillator NaI(Tl) using SiPM matrix and signal digitizing from this matrix utilizing a multichannel ASIC Maroc 3. In the second prototype between the...
