A5089176054- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Radiation Detection and Scintillator Technologies
- Dark Matter and Cosmic Phenomena
- Distributed and Parallel Computing Systems
- Neutrino Physics Research
- Nuclear Physics and Applications
- Radiation Therapy and Dosimetry
- Muon and positron interactions and applications
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Laser-Plasma Interactions and Diagnostics
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Laser-induced spectroscopy and plasma
- Superconducting Materials and Applications
- Energetic Materials and Combustion
- Terahertz technology and applications
- Thermal and Kinetic Analysis
- Particle accelerators and beam dynamics
- Cosmology and Gravitation Theories
- Medical Imaging Techniques and Applications
- Atomic and Molecular Physics
Institute for Nuclear Research
1990-2023
New York University
2008-2020
Research Institute for Electromagnetic Materials
2013
European Organization for Nuclear Research
2009-2012
Queen Mary University of London
2010-2011
The Ohio State University
2011
Russian Academy of Sciences
1996-2011
MSD (Serbia)
2011
Fisheries Research Institute of Slovenia
2011
Wallenberg Wood Science Center
2011
We discuss the physics case for and concept of a medium-scale axion helioscope with sensitivities in axion-photon coupling few times better than CERN Axion Solar Telescope (CAST). Search an axion-like particle these couplings is motivated by several persistent astrophysical anomalies. present early conceptual design, existing infrastructure, projected sensitivity timeline such (Troitsk Experiment, TASTE) to be constructed Institute Nuclear Research, Troitsk, Russia. The proposed instrument...
This paper describes the study of hot electron generation under action intense (∼1018 W/cm2) femtosecond pulses onto surface a solid target, in presence long pre-plasma, which varied with different spatial extents and densities. The corona was formed by pre-pulses intensities temporal profiles (amplified spontaneous emission (ASE) short pre-pulses). most efficient fast acceleration, to energies well beyond ponderomotive potential, observed if ASE able form extent ∼100 μm slightly...
Abstract The complex approach combining experimental data on X‐ray diagnostics of plasma, the results numerical PIC simulation laser‐plasma interaction (namely – fast electron spectra), as well Monte‐Carlo calculation resulted spectrum is presented. Direct comparison and simulated spectra (obtained at laser pulse intensity 2.5 × 10 18 W/cm 2 ) revealed differences in mean slope cutoff two spectra. In particular exhibited twice higher slope. possible explanations observed discrepancies are...
Abstract The results of calibration measurements the proton beam Cherenkov monitor are presented. A good agreement was obtained between and readings ionization chamber plastic monitor. does not register photons electrons with energies below 170 keV, which is important for low-energy background suppression.
During 2006 and the first half of 2007, installation, integration commissioning trigger data acquisition (TDAQ) equipment in ATLAS experimental area have progressed. There been a series technical runs using final components system already installed area. Various tests run including ones where level 1 preselected simulated proton-proton events processed loop mode through dataflow chains. The included readout buffers containing events, event building, 2 filter algorithms. scalability with...
An analytical expression for the spin-averaged amplitude squared of rare muon decay ${\ensuremath{\mu}}^{+}\ensuremath{\rightarrow}{e}^{+}{e}^{\ensuremath{-}}{e}^{+}{\ensuremath{\nu}}_{e}{\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}$ is calculated. Monte Carlo phase space simulation using has been used to get various differential distributions charged leptons. The approximate total energy spectrum leptons near end point presented. dependence branching ratio on cuts in studied taking into...
Detector cells consisting of fast lead-tungstate crystals viewed by avalanche photo-diodes were designed, built and bench-tested. It was found that cooling the to -20 C, using two per crystal, pulse shaping provided light yield, low noise, response needed for use in 100 MeV calorimetry at high beam rates. The achieved stochastic term coefficient is 0.8% time characterized a single decay 24 ns.
A solenoid capture system for the MELC experiment in which efficiency of soft muon generation from primary proton (600 MeV) is 10−4 comparison with 10−8 ordinary schemes has been proposed. Both signs muons an intensity 1011 μ−/sec negative and 2×1011 μ+/sec positive component can be generated by a pulse beam average current up to ≂200 μA. detail 3‐D calculation magnetic field setup are presented. Production pion decay studied. The target life time radiation condition superconducting coil considered.
The cascade mass reconstruction approach was applied to simulated production of the lightest stop quark at LHC in decay $\tilde{g} \to \sTop \, \Top \tilde{\chi}_{2}^{0} \tilde{\ell}_{R} \ell \tilde{\chi}_{1}^{0} \Top$ with top quarks decaying into hadrons. reconstructed assuming that masses gluino, slepton and two neutralinos were advance. A data sample set for SU3 model point containing 400k SUSY events generated which corresponded an integrated luminosity about 20 $\rm fb^{-1}$ 14 TeV....
Abstract Flash therapy with ultra-high dose rate beams opens up the possibility of significantly reducing radiation damage to normal tissues. But that type radiotherapy requires development new methods for dosimetry and monitoring beams, since many conventional detectors are not fully suitable these purposes. In this work, characteristics a proton beam monitor detects Cherenkov from secondary delta electrons were studied in flash mode irradiation. This is applicable any intensity, very...
The ATLAS experiment under construction at CERN is due to begin operation the end of 2007. detector will record results proton-proton collisions a center-of-mass energy 14 TeV. trigger three-tier system designed identify in real-time potentially interesting events that are then saved for detailed offline analysis. select approximately 200 Hz out 40 MHz bunch-crossing rate (with 109 interactions per second nominal luminosity).
In detection of electrons from $μ\to e $ conversion process the monochromatic electron spectrum is transformed due to a photon emission and fluctuations energy loss in target. The selection criterion (γ)$ events an momentum above threshold 103.5 MeV/c, which corresponds maximum 1.5 MeV. Radiative corrections including virtual correction soft below MeV lead reduction by about 10% probability calculated without radiative corrections. photons contributes change monoenergetic one at 105 with low...
The ATLAS experiment is preparing for data taking at 14 TeV collision energy. A rich discovery physics program being prepared in addition to the detailed study of Standard Model processes which will be produced abundance. multi-level trigger system designed accept one event 2 ∣ 105 enable selection rare and unusual events. calorimeter a precise instrument, includes liquid Argon electro-magnetic hadronic components as well scintillator-tile calorimeter. All these are used various levels...