A5046259924- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- Muon and positron interactions and applications
- Dark Matter and Cosmic Phenomena
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Neutrino Physics Research
- Radiation Effects in Electronics
- Astrophysics and Cosmic Phenomena
- Magnetic confinement fusion research
- Ionosphere and magnetosphere dynamics
- Particle accelerators and beam dynamics
- Pulsars and Gravitational Waves Research
- Earthquake Detection and Analysis
- Plasma Diagnostics and Applications
- Advancements in Semiconductor Devices and Circuit Design
- Radio Frequency Integrated Circuit Design
- Advancements in PLL and VCO Technologies
- CCD and CMOS Imaging Sensors
- Silicon Carbide Semiconductor Technologies
- Advanced X-ray Imaging Techniques
- Atmospheric Ozone and Climate
- Magnetic Field Sensors Techniques
- Computational Physics and Python Applications
High Energy Accelerator Research Organization
2014-2025
Institute of Particle and Nuclear Studies
2022-2025
The Graduate University for Advanced Studies, SOKENDAI
2011-2023
Kyushu University
2020-2023
Osaka University
2020-2023
Yamagata University
2023
Waseda University
2023
Nippon Soken (Japan)
2023
Nagoya University
2023
RIKEN
2023
This paper introduces a new approach to measure the muon magnetic moment anomaly |$a_{\mu} = (g-2)/2$| and electric dipole (EDM) |$d_{\mu}$| at J-PARC facility. The goal of our experiment is |$a_{\mu}$| using an independent method with factor 10 lower momentum, 20 smaller diameter storage-ring solenoid compared previous ongoing |$g-2$| experiments unprecedented quality storage field. Additional significant differences from present experimental include 1000 transverse emittance beam...
To improve material structure analysis using thermal (cold) neutrons at several pulsed neutron sources, we have developed a new gas detector for that employs electron multiplier (GEM) as the detector. For detection, both surfaces of single GEM foil are coated with boron, and to increase efficiency, foils stacked in chamber. A prototype chamber was constructed 10 cm × foils, beam tests were performed research reactor Japan sources (Hokkaido University Proton Accelerator Research Complex). We...
Abstract We have developed a prototype of the muon beam monitor ( μ BM) for COMET experiment at J-PARC. The aims to search neutrino-less muon-to-electron conversion event in field nucleus, as charged lepton flavor violation process. SiC-based BM will be installed vacuum chamber and located front muon-stopping target main central drift chamber. detector consists SiC PN-diodes dedicated readout electronics. By tailing 256 sensors matrix, profile bunch stability can extracted, then, are...
Abstract We have developed an optical photon-counting imaging system, IMONY, as instrument for short-scale time-domain astronomy. In this study, we utilized a Geiger avalanche photodiode array with $4\times 4$ pixel configuration, each measuring 100 µm. dedicated analog frontend board and constructed data acquisition system FPGA to time-stamp photon time resolution of ns. mounted prototype model the on 1.5 m Kanata telescope, intending observe Crab pulsar conduct joint observations Iitate...
Energy-selective neutron radiography is a new method for studying the fine structure of heavy materials by using pulsed sources. To perform such radiography, precise measurements temporal information and twodimensional position are essential. Therefore, we developed gaseous detector gas electron multiplier (GEM). In addition, to detect neutrons, single surface an aluminium cathode plate both surfaces two GEM foils were coated with boron-10. Two normal stacked in chamber amplification. An...
A high-intensity pulsed muon beam is becoming available at the Japan Proton Accelerator Research Complex (J-PARC). Many experiments to study fundamental physics using this are proposed. An experiment measure magnetic moment anomaly ($g-2$) and electric dipole (EDM) one of these it requires a tracking detector for positrons from decay. Fine segmentation required in tolerate high rate positrons. The time resolution be much better than anomalous spin precession period while buffer depth...
We have developed a two-dimensional imaging detector with gas electron multiplier (GEM) for thermal neutron detection. The basic characteristics of the GEM-based already been measured. In order to improve performance such as nγ discrimination capability and position resolution, irradiation test was performed at BL21 in Materials Life Science Experimental Facility (MLF). This paper describes potential improving on basis results test.
The COMET experiment aims to search for the neutrinoless conversion of a muon an electron in muonic atom. This utilizes bunched slow-extracted (bunched-SX) proton beam at 8 GeV from J-PARC main ring synchrotron. To achieve sensitivity $10^{−17}$, fraction inter-bunch stray protons, called extinction, must be less than $10^{−10}$ . commissioning with bunched-SX was performed May 2021. extinction measured by counting all secondary pions K1.8BR beamline Hadron Experimental Facility. After...
On-detector digital electronics in High-Energy Physics experiments is increasingly being implemented by means of SRAM-based FPGA, due to their capabilities reconfiguration, real-time processing and multi-gigabit data transfer. Radiation-induced single event upsets the configuration hinder correct operation, since they may alter programmed routing paths logic functions. In most trigger acquisition systems, from several front-end modules are concentrated into a board, which then transmits...
An FPGA-based online trigger system has been developed for the COMET Phase-I experiment. This experiment searches muon-to-electron conversion, which never observed yet. A drift chamber and counters detect a mono-energetic electron from conversion process in 1-T solenoidal magnetic field. highly intense muon source is applied to reach unprecedented experimental sensitivity. It also generates undesirable background particles, rate due these particles expected be much higher than an acceptable...
We report on the membrane diamond detector, which consists of 5 µm-thick p-i-n diodes and a dedicated front-end ASIC, fabricated in 65-nm CMOS technology. The diode has an attractive feature for low γ-ray sensitivities due to its extremely thin drift layer, is difficult form by etching bulk with Metal−Insulator−Metal structure. pseudo-vertical structure was formed single crystal {111} substrate MPCVD dry-etching process. readout electronics designed meet specifications real-time neutron...
An epithermal neutron camera based on energy-filtered imaging with gas electron multipliers was developed. Epithermal is achievable without time-of-flight detection of neutrons by using a resonance filter and thermal absorber. This technique applicable to compact accelerator-based sources. Blurring images caused scattering in the Ag B4C sheet (used as absorber) investigated experimentally. The spatial resolution for energies range 4.2 6.3 eV (corresponding peak 109Ag) estimated be 1.9±0.5 mm...
A COMET Experiment Phase-I is designed to search for a muon an electron conversion with 100 times better sensitivity than the current upper limit on its branching ratio in order investigate new physics beyond standard model. To achieve such unprecedented sensitivity, high intensity beam mandatory. In consequence, extremely hit rate predicted and it can cause trigger more tens of kHz dominated by background events. Then would lead severe dead-time data acquisition. Therefore essential success...
It is necessary to understand the spread and spatial distribution of charge induced on readout strips or pad in RPC utilize it for a tracking/imaging device. We have measured profile submilli-size cosmic ray events. The was be about 10 mm configuration our study. result verified measuring lateral size streamer using associated optical images.
The muon anomalous magnetic moment (g - 2) <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">μ</sub> and electric dipole (EDM) are sensitive to new physics beyond the Standard Model. We aim measure with a precision of 0.1 parts per million search for EDM sensitivity 10 <sup xmlns:xlink="http://www.w3.org/1999/xlink">-21</sup> e·cm at J-PARC. In this experiment, we use silicon strip detector high granularity fast response detect positrons from...
The SliT ASIC is a readout chip for the silicon strip detector to be used at J-PARC muon $g-2$/EDM experiment. production version of SliT128D was designed and mass finished. A quality assurance test method bare chips developed provide sufficient number performed 5735 were inspected. No defect observed in 84.3%. Accepting few channels with poor time walk performance out 128 per chip, more than 90% yield can achieved, which construct whole detector.
We have developed the 100 ns high-time resolution optical camera based on Multi-Pixel Photon Counter (MPPC) called "Imager of MPPC-based Optical photoN counter from Yamagata (IMONY)". IMONY has three important parts: customized sensor, front-end board, and Field Programmable Gate Array (FPGA) with Global Navigation Satellite System (GNSS). The sensor is made MPPC composed a monolithic Geiger-mode Avalanche PhotoDiodes (GAPD) array. photon detection efficiency more than 60% at 450nm. feature...
We report test of a trans-impedance fast amplifier FGATI, using semiconductor-based photo sensors SiPM and pulsed laser. The FGATI chip contains 16 channels amplifier-shaper-discriminator (ASD) circuits which generates low-voltage differentiation signal (LVDS) discriminator digital outputs, readily analyzed its timing by Time to Digital Converter (TDC). gain characteristics are tested voltage input pulse supplied through coupling capacitor FGATI. current from characterized with/without the...