I. Logashenko
A5106618612- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Muon and positron interactions and applications
- Superconducting Materials and Applications
- Dark Matter and Cosmic Phenomena
- Distributed and Parallel Computing Systems
- Scientific Research and Discoveries
- Particle Detector Development and Performance
- Particle accelerators and beam dynamics
- Advanced Data Processing Techniques
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle Accelerators and Free-Electron Lasers
- Engineering Education and Technology
- Cybersecurity and Information Systems
- International Science and Diplomacy
- Astrophysics and Cosmic Phenomena
Novosibirsk State University
2015-2024
Budker Institute of Nuclear Physics
1999-2023
Siberian Branch of the Russian Academy of Sciences
2019-2022
Boston University
2008-2013
We report a measurement of the positive muon lifetime to precision 1.0 ppm; it is most precise particle ever measured. The experiment used time-structured, low-energy beam and segmented plastic scintillator array record more than 2×1012 decays. Two different stopping target configurations were employed in independent data-taking periods. combined results give τμ+(MuLan)=2 196 980.3(2.2) ps, 15 times as any previous experiment. gives value for Fermi constant: GF(MuLan)=1.166 378 8(7)×10−5...
We present a detailed report of the method, setup, analysis and results precision measurement positive muon lifetime. The experiment was conducted at Paul Scherrer Institute using time-structured, nearly 100%-polarized, surface beam segmented, fast-timing, plastic scintillator array. employed two target arrangements; magnetized ferromagnetic with ~4 kG internal magnetic field crystal quartz in 130 G external field. Approximately 1.6 x 10^{12} positrons were accumulated together data yield...
The mean life of the positive muon has been measured to a precision 11 ppm using low-energy, pulsed beam stopped in ferromagnetic target, which was surrounded by scintillator detector array. result, tau(micro)=2.197 013(24) micros, is excellent agreement with previous world average. new average 019(21) micros determines Fermi constant G(F)=1.166 371(6)x10(-5) GeV-2 (5 ppm). Additionally, measurement positive-muon lifetime needed determine nucleon pseudoscalar coupling g(P).
The anomalous magnetic moment of the muon is one most precisely measured quantities in experimental particle physics. Its latest measurement at Brookhaven National Laboratory deviates from Standard Model expectation by approximately 3.5 standard deviations. goal new experiment, E989, now under construction Fermilab, a fourfold improvement precision. Here, we discuss details future and its current status.
Received 7 February 2011DOI:https://doi.org/10.1103/PhysRevLett.106.079901© 2011 American Physical Society
Abstract The article describes the design of a digital model an HPC system for processing data from Super Charm-Tau factory electron-positron collider “megascience” class. This is developed using AGNES multiagent modeling platform. includes intelligent agents that mimic behavior main subsystems supercomputer, such as task scheduler, computing clusters, storage system, etc. allows calculating parameters necessary and storing results operation after its commissioning.
This paper describes the design of a simulation model infrastructure for data processing fromthe Super Charm-Tau factory class "megasience" electron-positron collider. The simulates thebehavior main subsystems supercomputer, such as task scheduler, computing clusters,data storage system, etc. Using modeling allows maximally reliable representationof exact characteristics and volume needed equipment developing desired HPCsystem. accounts all aspects operation this system from paralleldata to...
The muon (g-2) experiment at Brookhaven completed a first run in June and July 1997. main components of the experiment, which include superconducting inflector, superferric storage ring, electrostatic quadrupoles lead-scintillating fiber electron calorimeters, have been commissioned satisfactorily. Our measurement ratio R spin precession frequency positive relative to that free proton, R=(3.707219/spl plusmn/0.000048)/spl times/10/sup -3/, is good agreement with previous CERN measurements...