Yutaro Sato
A5101681508- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Muon and positron interactions and applications
- Particle accelerators and beam dynamics
- Astrophysics and Cosmic Phenomena
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Electron and X-Ray Spectroscopy Techniques
- High-Energy Particle Collisions Research
- Advancements in Photolithography Techniques
- Neutrino Physics Research
- Particle Accelerators and Free-Electron Lasers
- Radiation Detection and Scintillator Technologies
- Gamma-ray bursts and supernovae
- Atomic and Molecular Physics
- Electrostatic Discharge in Electronics
- Supply Chain and Inventory Management
- Integrated Circuits and Semiconductor Failure Analysis
- CCD and CMOS Imaging Sensors
- Industrial Vision Systems and Defect Detection
- Advanced Manufacturing and Logistics Optimization
- Noncommutative and Quantum Gravity Theories
- Atomic and Subatomic Physics Research
- Plasma Diagnostics and Applications
- Computational Physics and Python Applications
Niigata University
2024
Hiroshima University
2023
High Energy Accelerator Research Organization
2019-2021
Osaka University
2019-2021
Open Source Drug Discovery
2021
The Graduate University for Advanced Studies, SOKENDAI
2020
Kyushu University
2020
Ibaraki University
2020
The Open University of Japan
2019
Japan Proton Accelerator Research Complex
2017
A search for the rare decay K_{L}→π^{0}νν[over ¯] was performed. With data collected in 2015, corresponding to 2.2×10^{19} protons on target, a single event sensitivity of (1.30±0.01_{stat}±0.14_{syst})×10^{-9} achieved and no candidate events were observed. We set an upper limit 3.0×10^{-9} branching fraction at 90% confidence level (C.L.), which improved previous by almost order magnitude. An K_{L}→π^{0}X^{0} also as 2.4×10^{-9} C.L., where X^{0} is invisible boson with mass 135 MeV/c^{2}.
The KOTO collaboration has now carefully analyzed widely discussed preliminary data containing four signal events for a rare kaon decay---an excess suggesting physics beyond the Standard Model---and found that Model background are large enough to explain signal.
As a new method to determine the resonance frequency, Rabi-oscillation spectroscopy has been developed. In contrast conventional which draws curve, fits time evolution of Rabi oscillation. By selecting optimized it is shown that precision twice as good with frequency sweep. Furthermore, data under different conditions can be treated in unified manner, allowing more efficient measurements for systems consisting limited number short-lived particles produced by accelerators such muons. We have...
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...
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 1,000 transverse emittance beam (reaccelerated...
The Gamma-ray Cherenkov Telescope (GCT) is a candidate for the Small Size Telescopes (SSTs) of Array (CTA). Its purpose to extend sensitivity CTA gamma-ray energies reaching 300 TeV. dual-mirror optical design and curved focal plane enables use compact camera 0.4 m diameter, while achieving field view above 8 degrees. Through digitising TARGET ASICs, flash sampled once per nanosecond continuously then digitised when triggering conditions are met within analogue outputs photosensors. Entire...
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 Cherenkov Telescope Array (CTA) is a forthcoming ground-based observatory for very-high-energy gamma rays. CTA will consist of two arrays imaging atmospheric telescopes in the Northern and Southern hemispheres, combine different types to achieve unprecedented performance energy coverage. Gamma-ray (GCT) one small-sized proposed explore range from few TeV hundreds with field view $\gtrsim 8^\circ$ angular resolution arcminutes. GCT design features dual-mirror Schwarzschild-Couder optics...
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.
Abstract A strategy for designing a dedicated beam injection and storage scheme the J-PARC Muon g-2/EDM experiment is described. To accomplish three-dimensional into MRI-type compact system, transverse phase spaces (X-Y coupling) pulsed kicker system are key to controlling vertical motion inside volume. Moreover, control through channel of magnet’s yoke crucial. We introduce five-dimensional phase-space correlation in addition strong X-Y coupling stored size level as small one-third that...
In Electron Beam (EB) exposure for Extreme Ultraviolet (EUV) masks, it is well known that the backscattering behavior differs significantly from conventional photomasks due to their film structure. particular, short-range scattering derived Mo/Si multilayer increases, causing resist be more strongly affected within narrower range. To compensate error in Critical Dimension (CD), Proximity Effect Correction (PEC) EB writer must aware of this scattering. While PEC calibration typically done...
The current status of the J-PARC E07 experiment and two typical events, a _ΛΛBe hypernuclear event named “MINO” \(_{\Xi }^{15}\text{C}\) “IBUKI”, are presented. is most complex emulsion so far to investigate double hypernuclei. physics run at K1.8 beam line in hadron facility photographic development all sheets have been completed. presently being analyzed with dedicated optical microscopes. Current statistics estimated be about twice that KEK-PS E373. Quantitative data on ΔB_ΛΛ Λ...
Extreme Ultraviolet (EUV) mask has Critical Dimension (CD) errors from various kinds of sources. Those are controlled for and corrected by proper correction methods such as fogging effect (FEC), loading (LEC), proximity (PEC), process (MPC) so on. The corrections mostly done independently. For example, conventionally CD nonlinearity been the scope that (PEC) because interaction range considered is different each other. But in order to improve quality, we may need consider residual PEC MPC...
We report the first search for $K_L \to \pi^0 \gamma$ decay, which is forbidden by Lorentz invariance, using data from 2016 to 2018 at J-PARC KOTO experiment. With a single event sensitivity of $(7.1\pm 0.3_{\rm stat.} \pm 1.6_{\rm syst.})\times 10^{-8}$, no candidate was observed in signal region. The upper limit on branching fraction set be $1.7\times 10^{-7}$ 90\% confidence level.
We report on the development of a front-end ASIC for silicon-strip detectors J-PARC Muon g-2/EDM experiment. This experiment aims to measure muon anomalous magnetic moment and electric dipole precisely explore new physics beyond Standard Model. Since time momentum positrons from decay are key information in experiment, fast response with high granularity is demanded as positron tracker. The readout thus required tolerate hit rate 1.4 MHz per strip have deep memory period 40 us 5 ns...
Muonium is one of the best probes for test bound-state QED, owing to absence effect from internal structure nucleons. The recent establishment intense pulsed muon beams at Japan Proton Accelerator Research Complex (J-PARC) paves way improved measurement muonium ground-state hyperfine (MuHFS). MuHFS also determines magnetic moment precisely, which an important input parameter measurements g-2, known 3-sigma discrepancy between experiment and theory. Spectroscopy Experiment Using Microwave...
A new silicon-strip readout chip named "SliT" has been developed for the measurement of muon anomalous magnetic moment and electric dipole (EDM) at Japan Proton Accelerator Research Complex (J-PARC). The SliT is designed in Silterra 180-nm CMOS technology with mixed-signal integrated circuits. An analog circuit incorporates a conventional charge-sensitive amplifier, shaping amplifiers, two distinct discriminators each 128 identical channels. digital part includes storage memories, an event...