Mr.
Anton Taraskin
(NRNU MEPHI)
12/10/2016, 15:30
A neutron detector providing charged particle detection capability has been designed for pulsed flux measurements. The detector consists of commonly used neutron-sensitive ZnS(Ag)/6LiF scintillator screens wrapping a layer of polystyrene scintillator (BC-454, EJ-254 or similar boron loaded plastic). This type of the detector can be made positionally sensitive and can be constructed in any...
Mrs.
Inessa Osadchuk
(National Research Nuclear University "MEPhI" (NRNU MEPhI))
12/10/2016, 15:30
The paper discusses the method of designing channels based on numerical simulations with the aim of achieving optimal beam parameters at the exit of the channel. Methodology was used to optimize the parameters of the transport channel of the electron accelerator, with significant loss of beam intensity in the output beam from the accelerator and in the process of transport of the beam for the...
Dr.
Alexander Chepurnov
(Skobeltsyn Institute of Nuclear Physics, Moscow State University)
12/10/2016, 15:30
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 can be used for generation of X-Rays [1], electrons [2] and neutrons [3]. Due to the unique properties such as On/Off mode of operation and absence...
Dr.
Alexey Fomin
(PNPI NRC KI)
12/10/2016, 15:30
An experiment on search for neutron–antineutron oscillations is proposed based on the storage of ultracold neutrons (UCNs) in a material trap. The main factors influencing sensitivity of the experiment are the trap size and the amount of UCNs trapped. A high-intensity UCN source will be created at the WWR-M reactor of Petersburg Nuclear Physics Institute, which must provide an UCN density two...
Mr.
Renat Ibragimov
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
12/10/2016, 15:30
For verification of mathematical model the radiation environment sensor a series of experiments was delivered. Researches were conducted by use the radiation beta source Sr90-Y90 . Based on the obtained experimental data comparison with work of mathematical model was carried out them. It is established that experimental values of the transformation coefficients K of charge sensitive amplifier...
Mr.
Evgeny Tyurin
(National Research Nuclear University “MEPhI”)
12/10/2016, 15:30
The paper presents the research results of slow neutrons detector based on thin film CVD-diamond with a deep graphitized layer. It is shown the low sensitivity of the detector to the g- and β- radiation. As a converter of slow neutrons used boron isotope 10B and lithium carbonate 6Li2CO3. In both cases, the efficiency of slow neutrons registration was about 3%
Mrs.
Inessa Osadchuk
(National Research Nuclear University «MEPhI» (MEPhI))
12/10/2016, 15:30
Considered a modern implementation of a computer environment for the design of channels of trans-portation of high-energy charged particle beams. The environment includes a software package for the simulation of the dynamics of charged particles in the channel, operating means for changing parame-ters of the channel, the elements channel optimization and processing of the output...
Dr.
Vladimir Borog
(National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
12/10/2016, 15:30
The paper presents a new method of identifying signals in a statistically noisy non-stationary time series. In difference from Fourier and wavelet analysis in the processing of data does not make any assumptions about the structure of the signal-analyzer. The proposed method of flicker-noise spectroscopy is demonstrated on simulated and real time series related to monitoring solar activity...
Mr.
Vasiliy Savin
(Yaroslavl State P.G. Demidov University)
12/10/2016, 15:30
The process of neutrino-electron scattering in a dense plasma and magnetic field of arbitrary strength, where electrons can occupy the states corresponding to excited Landau levels, is analyzed. The total probability and the mean values of the neutrino energy volume density and momentum losses due to this process are calculated. Possible astrophysical applications are discussed.
Mrs.
Elena Ryabeva
(NRNU MEPhI)
12/10/2016, 15:30
There is description of the development of detectors for neutrons, based on polystyrene and cadmium layers. Cadmium is used as neutron’s converters via reaction (n,γ) and polystyrene is used as scintillation material to register the originated gamma quanta. The simulation and experimental investigations of proposed detectors design are presented. The main advantages of proposed detection...
Mr.
Oleg Titov
(NRC "Kurchatov Institute")
12/10/2016, 15:30
We present $\beta$-spectra calculations for two $^{144}$Pr decay branches which are needed to obtain antineutrino spectrum of $^{144}$Ce-$^{144}$Pr source that will be used in SOX experiment. We analyze the factors that affect on beta spectrum, give their calculation methods and compare the calculations with experiment.
Mr.
Dmitrii Nesterov
(Saint-Petersburg State University)
12/10/2016, 15:30
The Inner Tracking System (ITS) is the vertex detector that surrounds the interaction point and plays a key role in tracking of charged particles and secondary vertices determination in ALICE (A Large Ion Collider Experiment) experiment at the LHC. After the LHC reconstruction in 2019-2020, when the luminosity of the collider will be increased more than 10 times, new physical tasks of rare...
Ms.
Maria Antonova
(NRNU MEPhI, INR RAS)
12/10/2016, 15:30
The long-baseline experiment T2K (Tokai-to-Kamioka) is a world leading setup to study neutrino oscillations and neutrino properties. The experiment uses an intense beam of (anti-) muon neutrinos, which is measured by the near (ND280) and far detectors (Super-Kamiokande). The near detector complex is designed to study neutrino flux prior to oscillations and is an apparatus consisting of...
Dmitry Pugachev
(NRC KI)
,
Mr.
Igor Machulin
(NRC "Kurchatov Institute")
12/10/2016, 15:30
Registration of supernova neutrinos is one of the main goals of large underground neutrino
detectors. We consider the possibility of using the large 2 kT water veto tank of DarkSide-20k dark matter detector as the additional facility for future Supernova detection. Simulations were performed for registration of cherenkov light in water tank from high energy positrons created by supernova...
Mr.
Maxim Gromov
(SINP MSU)
12/10/2016, 15:30
A prototype of the calibration system for the Liquid Scintillator Veto (LSV) and Water Cherenkov Veto (WCV) of the DarkSide detector have been developed. The instrument consists of a fast double output flasher which can be configured and controlled via USB, the appropriate application software. UV, visible or combination of both LEDs could be installed. Flashes amplitude, repetition rate and...
Ms.
Anna Morozova
(Moscow State U.)
,
Prof.
Sergei Sinegovsky
(Irkutsk State University, Institute of Apliied Physics)
12/10/2016, 15:30
The processing of the IceCube experiment data obtained during 988 days (2010–2014) revealed 54 neutrino-induced events with deposited energies 20 TeV - 2 PeV [1].
The hypothesis of an astrophysical origin of these neutrinos is confirmed at $5.7 \sigma$ CL. To identify reliably the neutrino events a thorough calculation of the atmospheric neutrino background should be performed. We calculate...
