A. Riazantsev
A5050673221- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Atomic and Subatomic Physics Research
- Quantum Chromodynamics and Particle Interactions
- Electrohydrodynamics and Fluid Dynamics
- Plasma Diagnostics and Applications
- High-Energy Particle Collisions Research
- Plasma Applications and Diagnostics
- Radioactive Decay and Measurement Techniques
- Advanced Frequency and Time Standards
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- Nuclear Physics and Applications
- Currency Recognition and Detection
- Chaos control and synchronization
- Advanced X-ray and CT Imaging
- Atmospheric Ozone and Climate
- Laser-induced spectroscopy and plasma
- Spectroscopy and Laser Applications
- Magnetic Field Sensors Techniques
- Dark Matter and Cosmic Phenomena
- Particle Accelerators and Free-Electron Lasers
Institute of Plasma Physics and Laser Microfusion
2021-2022
Institute for High Energy Physics
1998-2011
Lomonosov Moscow State University
2003
University of Bern
2003
Nagoya University
2002
Military Academy of Strategic Missile Forces named after Peter the Great
1995-1996
University of Trieste
1995
University of Iowa
1995
The DIRAC experiment at CERN has achieved a sizeable production of $\pi^+\pi^-$ atoms and significantly improved the precision on its lifetime determination. From sample 21227 atomic pairs, 4% measurement S-wave $\pi\pi$ scattering length difference $|a_0-a_2| = (.0.2533^{+0.0080}_{-0.0078}|_\mathrm{stat}.{}^{+0.0078}_{-0.0073}|_\mathrm{syst})M_{\pi^+}^{-1}$ been attained, providing an important test Chiral Perturbation Theory.
A fast and precise scintillating fiber (SciFi) tracker, using 0.5-mm-diameter fibers (Kuraray SCSF-78MJ) position-sensitive photomultiplier tubes (Hamamatsu H6568), has been developed for the COMPASS (NA58) experiment at CERN. Tests of a 16-channel prototype showed an excellent stability in time resolution, spatial as well detection efficiency under different beam flux up to 1.4 /spl times/ 10/sup 8/ muons/spill. Four SciFi tracker stations have constructed all them are presently operation...
Abstract The dynamics of the ion flux expelled by a 0 .5 kW -class Hall thruster supplied with krypton was examined in wide range discharge voltages. A homemade Faraday probe installed onto rotary arm used for reconstructing angular profiles plasma plume 0.5 m downstream exit plane. time dependence current measured along axis. For investigating signal dynamics, Fourier approach as well methods nonlinear series analysis like bifurcation diagrams and recurrence plot techniques were applied,...
Abstract A prototype of krypton Hall-effect thruster (HET) 0.5 kW nominal power and a dedicated diagnostic system for ion current collection were designed in the laboratory plasma space propulsion (PlaNS) Institute Plasma Physics Laser Microfusion (IPPLM) Warsaw. The consisting collimated Faraday Cup (FC) Planar Probe with Guarding Ring, named also (FP) was intended to capture both temporal spatial variation, allowing analyze not only dynamics locally but estimate total value jet divergence....
Abstract The magnetic circuit of a 500 W class Hall thruster, an electric propulsive device for spacecraft, was characterized experimentally and the results compared with simulation in order to verify design. commercial 3D gaussmeter, which used this work, additionally recalibrated compensate translation rotation individual sensors inside probe. Stokes stream function approach applied reconstruct field topography thruster. procedure, carried out on four different cases, yielded very good...
A fast and precise scintillating fiber (SciFi) hodoscope based on KURARAY SciFi HAMAMATSU multianode H6568 tubes was constructed to be used in DIRAC experiment (PS-212) at CERN for tracking topological triggering information. The front-end electronics custom developed allow on-line discrimination after built-in dynamic cross-talk rejection. Preliminary tests of the detector using more than 300 read-out channels have shown an excellent stability optimum performance this system: a uniform...
The low-energy QCD predictions to be tested by the DIRAC experiment are revised. experimental method, setup characteristics and capabilities, along with first results reported. Preliminary analysis shows good detector performance: alignment error via $Λ$ mass measurement $m_Λ= 1115.6 MeV/c^2$ $σ= 0.92 MeV/c^2$, $p π^-$ relative momentum resolution $σ_Q \approx 2.7 MeV/c$, evidence for $π^+ low Coulomb correlation.