BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Ultra-violet light-emitting diod calibration system for timing lar ge area scintillation detectors. DTSTART;VALUE=DATE-TIME:20161013T134500Z DTEND;VALUE=DATE-TIME:20161013T140000Z DTSTAMP;VALUE=DATE-TIME:20260814T162455Z UID:indico-contribution-70-736@cern.ch DESCRIPTION:Speakers: Michael Runtso (NRNU MEPhI)\nTiming large area plast ic scintillation detectors are developing for the space gamma-ray telescop es now. For the in-flight calibration of these detectors the use of ultra- violet light-emitting diode\, irradiating the 1 m long detector module at the center along its width is suggested. The results of the measurements s how the possibility of this calibration system implementation.\n\nhttps:// indico.particle.mephi.ru/event/4/contributions/736/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/736/ END:VEVENT BEGIN:VEVENT SUMMARY:The special radiation-hardened processors for new highly informati ve experiments in space DTSTART;VALUE=DATE-TIME:20161013T131500Z DTEND;VALUE=DATE-TIME:20161013T133000Z DTSTAMP;VALUE=DATE-TIME:20260814T162455Z UID:indico-contribution-70-708@cern.ch DESCRIPTION:Speakers: Oleg Serdin (SRISA)\nThe detailed description of spe cial radiation-hardened microprocessor series developed by SRISA for diffe rent space applications is presented. The microprocessors have 32-bit and 64-bit KOMDIV architecture and built-in fast SpaceWire\, SerialRapidIO\, E thernet\, MIL-STD-1553B interfaces. These devices will be used for design of GAMMA-400 space telescope scientific data acquisition system and can be applied in the other future highly informative experiments in deep outer space (such as “Millimetron” observatory\, etc.).\n\nhttps://indico.pa rticle.mephi.ru/event/4/contributions/708/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/708/ END:VEVENT BEGIN:VEVENT SUMMARY:Status of the scientific data acquisition system for the GAMMA-400 space telescope mission DTSTART;VALUE=DATE-TIME:20161013T130000Z DTEND;VALUE=DATE-TIME:20161013T131500Z DTSTAMP;VALUE=DATE-TIME:20260814T162455Z UID:indico-contribution-70-704@cern.ch DESCRIPTION:Speakers: Alexey Bakaldin (Scientific Research Institute of Sy stem Analysis of the Russian Academy of Sciences)\nThe present status of s cientific data acquisition system (SDAQ) developed by SRISA for the GAMMA- 400 space telescope mission is presented. SDAQ provides the collection of the data from telescope detector subsystems (up to 100 GB per day)\, the p reliminary processing of scientific information and its accumulation in ma ss memory\, transferring the information from mass memory to the satellite radio line for its transmission to ground\, the control and monitoring of the telescope subsystems. SDAQ includes special space qualified chipset d esigned by SRISA and has scalable modular net structure based on fast and high-reliable SerialRapidIO 1.25 Gbit/sec interface.\n\nhttps://indico.par ticle.mephi.ru/event/4/contributions/704/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/704/ END:VEVENT BEGIN:VEVENT SUMMARY:High-energy gamma-ray studying with GAMMA-400 after Fermi-LAT DTSTART;VALUE=DATE-TIME:20161013T124500Z DTEND;VALUE=DATE-TIME:20161013T130000Z DTSTAMP;VALUE=DATE-TIME:20260814T162455Z UID:indico-contribution-70-661@cern.ch DESCRIPTION:Speakers: Nikolay Topchiev (Lebedev Physical Institute)\nFermi -LAT has made a significant contribution to the study of high-energy gamma -ray diffuse emission and the observation of ~3000 discrete sources. Howev er\, one third of all gamma-ray sources (both galactic and extragalactic) are unidentified\, the data on the diffuse gamma-ray emission should be cl arified\, and signatures of dark matter particles in the high-energy gamma -ray range are not observed up to now. GAMMA-400\, currently developing ga mma-ray telescope\, will have the angular (~0.01° at 100 GeV) and energy (~1% at 100 GeV) resolutions in the energy range of 10-1000 GeV better tha n the Fermi-LAT (as well as ground gamma-ray telescopes) by a factor of 5- 10 and observe some parts of the universe (such as Galactic Center\, Fermi Bubbles\, Crab\, Cygnus\, etc.) in the highly elliptic orbit (without sha ding the telescope by the Earth) continuously for a long time. It will per mit to resolve gamma rays from dark matter particles\, identify many discr ete sources (many of which are variable)\, to clarify the structure of ext ended sources\, to specify the data on the diffuse emission.\n\nhttps://in dico.particle.mephi.ru/event/4/contributions/661/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/661/ END:VEVENT BEGIN:VEVENT SUMMARY:Gamma-quanta and charged particles recognition by the counting and triggers signals formation system of GAMMA-400 space gamma-telescope DTSTART;VALUE=DATE-TIME:20161013T143000Z DTEND;VALUE=DATE-TIME:20161013T144500Z DTSTAMP;VALUE=DATE-TIME:20260814T162455Z UID:indico-contribution-70-647@cern.ch DESCRIPTION:Speakers: Irene ARKHANGELSKAJA (National Research Nuclear Univ ersity MEPhI (Moscow Engineering Physics Institute))\nGAMMA-400 (Gamma Ast ronomical Multifunctional Modular Apparatus) parameters are optimized for detection of gamma-quanta with the energy $\\sim~100$~GeV in the main aper ture. Also there are opportunities to detect particles in additional and l ateral apertures. Registered events identification procedures details are discussed in the presented article for gammas\, electrons/positrons and pr otons both in low and high energy bands of 0.2 - 10~MeV in additional and lateral apertures and from ~20~MeV to several TeV in all three ones. It al lows providing energy resolution $8\\% - 2\\%$ for gamma-quanta in low ene rgy region and $~2\\%$ for gammas and electrons/positrons in high one.\n\n https://indico.particle.mephi.ru/event/4/contributions/647/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/647/ END:VEVENT BEGIN:VEVENT SUMMARY:The structure\, logic of operation and distinctive features of the system of triggers and counting signals formation for gamma-telescope GAM MA-400 DTSTART;VALUE=DATE-TIME:20161013T141500Z DTEND;VALUE=DATE-TIME:20161013T143000Z DTSTAMP;VALUE=DATE-TIME:20260814T162455Z UID:indico-contribution-70-645@cern.ch DESCRIPTION:Speakers: Andrey Arkhangelskiy (National Research Nuclear Univ ersity MEPhI (Moscow Engineering Physics Institute))\nScientific project G AMMA-400 (Gamma-Astronomy Multifunction Modules Apparatus) relates to the new generation of space observatories for investigation of cosmic gamma-em ission in the energy band from $\\sim~{20}$ MeV up to several TeV\, electr on/positron fluxes from $\\sim~{1}$ GeV up to $\\sim~{10}$ TeV and cosmic- ray nuclei fluxes with energies up to $\\sim~{10}^{15}$ eV in the main ape rture by means of GAMMA-400 gamma-telescope represents the core of the sci entific complex. For gamma-rays in the energy region from 10 to 100 GeV ex pected energy resolution changes from $\\sim~2\\%$ to $\\sim~1\\%$ and ang ular resolution from $\\sim~0.1\\%$ to $\\sim~0.01\\%$ respectively\, elec tron/protons rejection factor is $\\sim~{5}•{10}^{5}$. The GAMMA-400 sat ellite will be launched on the high apogee orbit with following initial pa rameters: apogee altitude $\\sim~300000$ km\, perigee altitude $\\sim~500$ km\, rotation period $\\sim~7$ days\, inclination to the equator plane $\ \sim{51}^{o}$. The active functioning interval will be 5-10 years. The sys tem of triggers and counting signals formation represents the electronic s ystem consists of control and interface unit\, set of program controlled d igital delay lines\, counters and units for master triggers signals format ion from any combination of input digital and analogue pulses from detecti ng subsystems of gamma-telescope. The structure\, logic of operation and d istinctive features of the system are presented.\n\nhttps://indico.particl e.mephi.ru/event/4/contributions/645/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/645/ END:VEVENT BEGIN:VEVENT SUMMARY:The investigation of timing large area scintillation detectors wit h SiPM light sensors properties. DTSTART;VALUE=DATE-TIME:20161013T140000Z DTEND;VALUE=DATE-TIME:20161013T141500Z DTSTAMP;VALUE=DATE-TIME:20260814T162455Z UID:indico-contribution-70-636@cern.ch DESCRIPTION:Speakers: Peter Naumov (NRNU MEPhI)\nThe timing large area pla stic scintillation detectors with silicon photomultipliers as photosensors properties were investigated using a cosmic radiation at the ground level . Different techniques of the amplitude spectra and efficiency measurement s were implemented. The measurements results are presented also.\n\nhttps: //indico.particle.mephi.ru/event/4/contributions/636/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/636/ END:VEVENT BEGIN:VEVENT SUMMARY:Modifications of method for low energy gamma incident angle recons truction in GAMMA-400 gamma-ray telescope DTSTART;VALUE=DATE-TIME:20161013T133000Z DTEND;VALUE=DATE-TIME:20161013T134500Z DTSTAMP;VALUE=DATE-TIME:20260814T162455Z UID:indico-contribution-70-569@cern.ch DESCRIPTION:Speakers: Alexey Leonov (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)\, P.N. Lebedev Physical Insti tute of the Russian Academy of Sciences)\nModifying a method of incident a ngle reconstruction for low-energy gamma rays in the GAMMA-400 gamma-ray t elescope.\n\nThe GAMMA-400 gamma-ray telescope is designed to measure the gamma-ray fluxes in the energy range from 20 MeV to 1 TeV\, performing a s ensitive search in high-energy gamma-ray emission when annihilating or dec aying dark matter particles. Such measurements also will concern the follo wing scientific goals: searching for new and studying known Galactic and e xtragalactic discrete high-energy gamma-ray sources: supernova remnants\, pulsars\, accreting objects\, microquasars\, active galactic nuclei\, blaz ars\, quasars\; studying their structure with high angular resolution and measuring their energy spectra and luminosity with high-energy resolution\ ; identifying discrete gamma-ray sources with known sources in other energ y ranges. The major advantage of the GAMMA-400 instrument is excellent ang ular and energy resolutions for gamma rays above 10 GeV. The gamma-ray tel escope angular and energy resolutions for the main aperture at 100-GeV gam ma rays are ~0.01° and ~1%\, respectively.\nThe motivation of presented r esults is to improve physical characteristics of the GAMMA-400 gamma-ray t elescope in the energy range of ~10-100 MeV\, most unexplored range today. Such observations are crucial today for a number of first-rank problems f aced by modern astrophysics and fundamental physics\, including the origin of chemical elements and cosmic rays\, the nature of dark matter\, and th e applicability range of the fundamental laws of physics. To improve incid ent angle reconstruction accuracy for low-energy gamma rays the special an alysis of topology of pair-conversion events in thin layers of converter w as performed. Choosing the pair-conversion events with more precise vertic al localization allows us to obtain significantly better angular resolutio n in comparison with previous and current space and ground-based experimen ts. For 50-MeV gamma rays the GAMMA-400 gamma-ray telescope angular resolu tion is better than 5°.\n\nhttps://indico.particle.mephi.ru/event/4/contr ibutions/569/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/569/ END:VEVENT END:VCALENDAR