A5101672210- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Neutrino Physics Research
- Superconducting and THz Device Technology
- Atomic and Subatomic Physics Research
- Radio Astronomy Observations and Technology
- Cosmology and Gravitation Theories
- Particle Accelerators and Free-Electron Lasers
- Nuclear Physics and Applications
- Solar and Space Plasma Dynamics
- Superconducting Materials and Applications
- Radiation Therapy and Dosimetry
- Physics of Superconductivity and Magnetism
- Particle accelerators and beam dynamics
- Advanced Surface Polishing Techniques
- Microstructure and Mechanical Properties of Steels
- Geophysics and Gravity Measurements
- CCD and CMOS Imaging Sensors
- Photonic and Optical Devices
- Adaptive optics and wavefront sensing
Ishikawa Prefectural Central Hospital
2021-2025
High Energy Accelerator Research Organization
2014-2024
Université de Strasbourg
2020-2024
Centre National de la Recherche Scientifique
2020-2024
Kyoto University
2012-2024
RIKEN Center for Integrative Medical Sciences
2024
Mitsubishi Electric (Japan)
2005-2023
Comprehensive Research Organization for Science and Society
2017-2023
University of Tsukuba
1995-2023
Chiba University
2001-2023
Results from 1036 days of solar neutrino data accumulated in the upgraded Kamiokande detector (Kamiokande III) are presented. The $^{8}\mathrm{B}$ flux observed III is ${2.82}_{\ensuremath{-}0.24}^{+0.25}$ (stat) \ifmmode\pm\else\textpm\fi{} 0.27 (syst) \ifmmode\times\else\texttimes\fi{} ${10}^{6}$ ${\mathrm{cm}}^{\ensuremath{-}2}$${\mathrm{s}}^{\ensuremath{-}1}$; combined II and (2079 total) 2.80 0.19 0.33 ${\mathrm{cm}}^{\ensuremath{-}2}$${\mathrm{s}}^{\ensuremath{-}1}$, which 49% to 64%...
We report cosmic-ray proton and helium spectra in energy ranges of 1-120 GeV nucleon-1 1-54 nucleon-1, respectively, measured by a flight the Balloon-borne Experiment with Superconducting Spectrometer (BESS) 1998. The magnetic rigidity cosmic ray was reliably determined highly precise measurement circular track uniform solenoidal field 1 T. Those were within overall uncertainties ±5% for protons ±10% nuclei including statistical systematic errors.
Primary and atmospheric cosmic-ray spectra were precisely measured with the BESS-TeV spectrometer. The spectrometer was upgraded from BESS-98 to achieve seven times higher resolution in momentum measurement. We report absolute fluxes of primary protons helium nuclei energy ranges, 1–540 GeV 1–250 GeV/n, respectively, flux muons range 0.6–400 GeV/c.
The energy spectrum of cosmic-ray antiprotons (¯p's) from 0.17 to 3.5 GeV has been measured using 7886 ¯p's detected by BESS-Polar II during a long-duration flight over Antarctica near solar minimum in December 2007 and January 2008. This shows good consistency with secondary ¯p calculations. Cosmologically primary have investigated comparing calculated spectra. data show no evidence the evaporation primordial black holes.Received 28 July...
The energy spectra of cosmic-ray low-energy antiprotons ( $\overline{p}$'s) and protons $p$'s) have been measured by BESS in 1999 2000, during a period covering reversal at the solar magnetic field. Based on these measurements, sudden increase $\overline{p}/p$ flux ratio following field was observed, it generally agrees with drift model modulation.
The flux of upward through-going muons minimum (mean) threshold energy >1.6 (3.0) GeV is measured, based on a total 372 events observed by the Kamiokande II+III detector during 2456 live days. muon was Φobs=[1.94±0.10(stat.)−0.06+0.07sys.)]×10−13cm−2s−1sr−1, which compared to an expected value Φtheo=[2.46±0.54(theo.)]×10−13cm−2s−1sr−1. observation in agreement with prediction within errors. zenith-angle dependence supports previous indication neutrino oscillations made using sub- and...
The BESS-Polar Collaboration measured the energy spectra of cosmic-ray protons and helium during two long-duration balloon flights over Antarctica in December 2004 2007, at substantially different levels solar modulation. Proton probe origin propagation history cosmic rays galaxy, are essential to calculations expected antiprotons, positrons, electrons from interactions primary nuclei with interstellar gas, atmospheric muons neutrinos. We report absolute top atmosphere for kinetic range...
Abstract Background Systemic lupus erythematosus (SLE) is heterogeneous in organ involvement and disease severity, presenting a broad clinical phenotype. type I interferon (IFN) activity has been shown to be associated with nephritis, autoantibodies, treated SLE patients; however, these relationships are unknown treatment-naive patients. We aimed determine the relationship of systemic IFN phenotypes, activity, damage accrual patients before after induction maintenance therapy. Methods Forty...
The cosmic-ray hydrogen and helium spectra have been measured by the Balloon Borne Experiment with a Superconducting Solenoid Spectrometer (BESS), which has flown from Lynn Lake, Manitoba, Canada, annually since 1993. BESS experiment provides excellent rigidity measurement precise particle identification large geometric acceptance. We present here nuclei energy 0.2 to 10 GeV nucleon-1 their isotopic composition about 1 for first flight. This simultaneous measurements of secondaries,...
We performed a search for cosmic-ray antideuterons using data collected during four BESS balloon flights from 1997 to 2000. No candidate was found. derived, the first time, an upper limit of 1.9 x 10(-4) (m2s sr GeV/nucleon)(-1) differential flux antideuterons, at 95% confidence level, between 0.17 and 1.15 GeV/nucleon top atmosphere.
In two long-duration balloon flights over Antarctica, the BESS-Polar collaboration has searched for antihelium in cosmic radiation with higher sensitivity than any reported investigation. BESS- Polar I flew 2004, observing 8.5 days. II 2007-2008, 24.5 No candidate was found data among 8.4\times 10^6 |Z| = 2 nuclei from 1.0 to 20 GV or 4.0\times 10^7 14 GV. Assuming have same spectral shape as helium, a 95% confidence upper limit of 6.9 \times 10^-8 determined by combining all BESS data,...
POLARBEAR-2 (PB-2) is a cosmic microwave background (CMB) polarization experiment that will be located in the Atacama highland Chile at an altitude of 5200 m. Its science goals are to measure CMB signals originating from both primordial gravitational waves and weak lensing. PB-2 designed tensor scalar ratio, r, with precision {\sigma}(r) < 0.01, sum neutrino masses, {\Sigma}m{\nu}, {\sigma}({\Sigma}m{\nu}) 90 meV. To achieve these goals, employ 7588 transition-edge sensor bolometers 95 GHz...
We search for the dark photon matter (DPDM) using a cryogenic millimeter-wave receiver. DPDM has kinetic coupling with electromagnetic fields constant of χ and is converted into ordinary photons at surface metal plate. signal this conversion in frequency range 18-26.5 GHz, which corresponds to mass 74-110 μeV/c^{2}. observed no significant excess, allowing us set an upper bound χ<(0.3-2.0)×10^{-10} 95% confidence level. This most stringent constraint date tighter than cosmological...
Ultra-light dark matter candidates, such as axions and photons, particularly within the mass range of $\mu$eV to meV, have garnered significant research interest. However, effectiveness existing experiments is often hindered by narrow bandwidths conventional spectrometers. This study presents a novel spectrometer solution based on RFSoC, which integrates high-speed data converter, field programmable gate array (FPGA), CPU single chip. The spectrometer's logic implements an optimized fast...
A search for cosmic-ray antiprotons was performed using a balloon-borne experiment with superconducting magnetic rigidity spectrometer (BESS). We have detected four in the kinetic energy range between 300 and 500 MeV, first to be identified by direct mass measurement. The corresponding $\frac{\overline{p}}{p}$ flux ratio at top of atmosphere is found ${1.2}_{\ensuremath{-}0.65}^{+1.0}$ \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}5}$. No were observed 175 resulting 90% C.L. upper...