A5063325199- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Quantum Chromodynamics and Particle Interactions
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Astronomy and Astrophysical Research
- Muon and positron interactions and applications
- Nuclear physics research studies
- Nuclear Physics and Applications
- Astro and Planetary Science
- Atomic and Molecular Physics
- Medical Imaging Techniques and Applications
- CCD and CMOS Imaging Sensors
- Atomic and Subatomic Physics Research
- High-Energy Particle Collisions Research
- Planetary Science and Exploration
- Stellar, planetary, and galactic studies
- Advanced NMR Techniques and Applications
- Computational Physics and Python Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Solar and Space Plasma Dynamics
- Particle accelerators and beam dynamics
Kyungpook National University
2025
École Polytechnique
2013-2022
Centre National de la Recherche Scientifique
2010-2022
Institut de l'Information Scientifique et Technique
2018
Université Paris-Saclay
2012-2014
GANIL
1985-2014
Université Paris-Sud
2010-2013
Institut National de Physique Nucléaire et de Physique des Particules
2011
Université Paris Cité
1983-2011
Universiti Malaysia Perlis
2009
A new measurement of the ${\mathrm{\ensuremath{\pi}}}^{+}$\ensuremath{\rightarrow}${\mathit{e}}^{+}$\ensuremath{\nu} branching ratio gives ${\mathit{R}}_{\mathrm{\ensuremath{\pi}}\mathit{e}\ensuremath{\nu}}$=\ensuremath{\Gamma}(\ensuremath{\pi}\ensuremath{\rightarrow}e\ensuremath{\nu}+\ensuremath{\pi}\ensuremath{\rightarrow}e\ensuremath{\nu}\ensuremath{\gamma})/\ensuremath{\Gamma}...
Evidence of massive neutrinos was sought in the ${\ensuremath{\pi}}^{+}\ensuremath{\rightarrow}{e}^{+}\ensuremath{\nu}$ decay spectrum with background from $\ensuremath{\pi}\ensuremath{\rightarrow}\ensuremath{\mu}\ensuremath{\rightarrow}e$ chain highly suppressed. Upper limits (90% C.L.) were set on neutrino mixing parameter ${|{U}_{\mathrm{ei}}|}^{2}<{10}^{\ensuremath{-}7}$ mass region $50<{m}_{\ensuremath{\nu}}<130$ MeV/${\mathit{c}}^{2}$.
Petiroc is a 16-channel front-end ASIC designed to readout silicon photomultipliers (SiPMs) for particle time-of-flight measurement applications. It combines very fast and low-jitter trigger with an accurate charge measurement.
Triroc is the latest addition to SiPM readout ASICs family developed at Weeroc, a start-up company from Omega microelectronics group of IN2P3/CNRS. This chip under framework TRIMAGE European project which aimed for building cost effective tri-modal PET/MR/EEG brain scan. To ensure flexibility and compatibility with any in market, ASIC designed be capable accepting negative positive polarity input signals. 64-channel ASIC, suitable requires high accuracy timing charge measurements. Targeted...
Simultaneous PET/MR/EEG (Positron Emission Tomography - Magnetic Resonance Electroencephalography), a new tool for the investigation of neuronal networks in human brain, is presented here within framework European Union Project TRIMAGE. The trimodal, cost-effective imaging makes use cutting edge technology both PET and MR fields. A novel type magnet (1.5T, non-cryogenic) has been built together with scanner that most advanced photodetectors (i.e., SiPM matrices), scintillators matrices...
A measurement of the ${\ensuremath{\pi}}^{+}\ensuremath{\rightarrow}{e}^{+}\ensuremath{\nu}$ branching ratio gives...
Limits on the lepton-flavor-violating reactions ${\ensuremath{\mu}}^{\mathrm{\ensuremath{-}}}$+Z\ensuremath{\rightarrow}${e}^{\mathrm{\ensuremath{-}}}$+Z and ${\ensuremath{\mu}}^{\mathrm{\ensuremath{-}}}$+Z\ensuremath{\rightarrow}${e}^{+}$+(Z-2), muon-electron muon-positron conversion, have been obtained from a search performed at TRIUMF using time-projection chamber. Upper limits (90% C.L.) for branching ratios compared to ordinary muon capture titanium target are...
The first measurement of the elementary process $\mu^- p \rightarrow \nu_{\mu} n \gamma$ is reported. A photon pair spectrometer was used to measure partial branching ratio ($2.10 \pm 0.22) \times 10^{-8}$ for photons k > 60 MeV. value weak pseudoscalar coupling constant determined from $g_p(q^{2}=-0.88m_{\mu}^2) = (9.8 0.7 0.3) \cdot g_a(0)$, where error quadrature sum statistical and systematic uncertainties second due uncertainty in $\lambda_{op}$, decay rate ortho para $p \mu p$...
Searches have been performed for neutrinoless muon-electron conversion and muon-positron using a time projection chamber. An upper limit on the branching ratio coherent reaction R(${\ensuremath{\mu}}^{\mathrm{\ensuremath{-}}}$ +Ti\ensuremath{\rightarrow}${e}^{\mathrm{\ensuremath{-}}}$+Ti)4.6\ifmmode\times\else\texttimes\fi{}1 ${0}^{\mathrm{\ensuremath{-}}12}$ [90% confidence level (C.L.)] relative to ordinary muon capture was obtained. For process...
We present the first results obtained with a prototype of PET read-out electronics trimodal PET/MRI/EEG TRIMAGE scanner. The is based on 64-channel TRIROC ASIC and an acquisition board that will control up to 12 ASICs. output each processed in parallel sent host system final version receive data from 18 boards. Blocks 64 SiPMs are one-to-one coupled dual-layer staggered LYSO crystal matrix read by single ASIC. FPGA reads sparse ASICs reconstructs for event full image light pattern coming...