A5049591161- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Particle Detector Development and Performance
- Neutrino Physics Research
- Gamma-ray bursts and supernovae
- Nuclear reactor physics and engineering
- Particle physics theoretical and experimental studies
- Radioactivity and Radon Measurements
- Radiation Therapy and Dosimetry
- Geophysics and Gravity Measurements
- Ionosphere and magnetosphere dynamics
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Atomic and Subatomic Physics Research
- Solar and Space Plasma Dynamics
- Astrophysical Phenomena and Observations
- Superconducting Materials and Applications
- Magnetic confinement fusion research
- Earthquake Detection and Analysis
National Research Nuclear University MEPhI
2015-2021
Joint Institute for Nuclear Research
2016
The new URAN array has been constructed in the National Research Nuclear University MEPhI (Moscow, Russia). It is aimed at studying of primary cosmic rays "knee" region energy spectrum and detects neutrons produced interactions EAS particles with nuclei atmosphere or matter. consists 72 detectors based on scintillator natural boron. Scintillator represents a silicon plate granules ZnS(Ag) B2O3 mixture. area detector 0.36 sq. m. Detectors are located two roofs laboratory buildings combined...
The Experimental Complex (EC) NEVOD includes a number of detectors used to carry out basic research cosmic rays (CR) and their interactions in the energy range 1011–1019 eV applied heliosphere, magnetosphere atmosphere Earth by muonography method which is based on analysis spatial-angular variations muon flux generated primary CR particles with energies 10^9–10^11 eV. EC being constantly developed. Nowadays, it consists three groups experimental facilities unique world: major (Cherenkov...
The TAIGA project is aimed at solving the fundamental problems of gamma-ray astronomy and physics ultrahigh energy cosmic rays with help complex detectors, located in Tunka valley (Siberia, Russia). includes a wide-angle large area Tunka-HiSCORE array, designed to detect gamma-rays energies range 20 - 1000 TeV charged 100 PeV, muon detector improve rejection background EAS protons nuclei network imaging atmospheric Cherenkov telescopes for gamma radiation detection. We discuss goals...
The gamma-ray energy regime beyond 10 TeV is crucial for the search most energetic Galactic accelerators. spectra of known emitters only reach up to few 10s TeV, with 80 from Crab Nebula being highest so far observed significantly. Uncovering their spectral shape 100 could answer question whether some these objects are cosmic ray Pevatrons, i.e. PeV
Abstract The URAN array was created in the Scientific and Educational Centre NEVOD (MEPhI). facility designed to register neutrons that accompany EAS at energies of primary cosmic rays around above “knee”. It includes 72 detectors based on a thin inorganic scintillator for registration charged neutron components EAS. total area is about 10 3 m 2 . For correct interpretation experimental data URAN, response passage simulated using CORSIKA7.6900 program Geant4.10.5 software package. gave...
Up to several 10s of TeV, Imaging Air Cherenkov Telescopes (IACTs) have proven be the instruments choice for GeV/TeV gamma-ray astronomy due their good reconstrucion quality and gamma-hadron separation power. However, sensitive observations at above 100 TeV require very large effective areas (10 km2 more), which is difficult expensive achieve.
Some results on the EAS neutron component measurements by means of PRISMA-32 array are presented. The consists 32 electron-neutron detectors (en-detectors) capable to detect two main components: electromagnetic one consisting charged particles, and hadronic measuring delayed thermal neutrons accompanying showers. For detection, a compound well-known inorganic scintillator ZnS(Ag) LiF, enriched 90 % with 6Li isotope is used. setup allows us record over whole area.
The paper is devoted to the results of EAS neutron component investigations by means PRISMA-32 array. array consists 32 en-detectors and enables record delayed thermal neutrons accompanying showers. For registration neutrons, scintillator based on $^{6}Li$ isotope as a target used in detectors. Some processing data accumulated over long period time are presented: lateral distribution function preliminary multiplicity spectrum showers e/n ratio.
Abstract Results of comparing events detected with two detectors the Experimental complex NEVOD: PRISMA-32 array and Cherenkov water calorimeter (CWC) NEVOD – are presented. The is an for simultaneous registration EAS electron-photon neutron components. It consists 32 en-detectors deployed over area about 500 m 2 , along perimeter CWC NEVOD. a detector calorimetric type volume 2000 cubic meters in which system 91 quasispherical modules (546 FEU-200 photomultipliers) placed. provides...
The description of the new data acquisition and triggering systems for DECOR coordinate-tracking detector is presented. hardware supermodule controller providing effective events various classes, their readout transmission to central computer was designed manufactured. structural solutions used in design results comparing performance old are discussed.
The description of the recording system a new installation for registration atmospheric neutrons (URAN array) which is created as part experimental complex NEVOD presented. based on 12-bit ADC with sampling frequency 200 MHz and possibility to reduce clock 1 detection after their thermalization. setup has an independent cluster structure. URAN first stage includes 6 clusters 12 detectors each located roofs two buildings: its neighbor.
The Russian-Italian NEVOD-DECOR experiment on measurements of the local muon density spectra at various zenith angles gave possibility to obtain important information primary cosmic ray flux and interaction characteristics in a wide energy range from 1015 more than 1018 eV. At large high densities, considerable excess bundles has been found comparison with expectation. In this paper, an update these investigations is presented some new results obtained by collaboration are discussed.
The neutron component of EAS has not been practically studied for many years. Creation the detector arrays PRISMA-32 and PRISMA-YBJ demonstrated effectiveness such investigations. It is important to underline that recording carried out over whole array area. Development a new larger scale (URAN) in MEPhI will continue these studies. During construction URAN array, design en-detectors based on scintillator with natural boron electronics was developed. use switchable sampling rate allows one...