R. Orito
University of Tokyo
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Publication
Featured researches published by R. Orito.
New Astronomy Reviews | 2004
T. Tanimori; H. Kubo; Kentaro Miuchi; Tsutomu Nagayoshi; R. Orito; Atsushi Takada; Atsushi Takeda; Masaru Ueno
We propose a new imaging gamma-ray detector in the MeV region. By measuring the directions and energies of not only a scattered gamma ray but also a recoil electron, the direction of an incident gamma ray would be essentially reconstructed event by event. Furthermore, one of two measured (zenith and azimuth) angles of a recoil electron gives us an additional redundancy which enables us to reject the background events by kinematic constraints. In order to measure the track of a recoil electron, the micro Time Projection Chamber(
Physics Letters B | 2008
K. Abe; H. Fuke; S. Haino; T. Hams; A. Itazaki; K. C. Kim; T. Kumazawa; M.H. Lee; Y. Makida; S. Matsuda; K. Matsumoto; John W. Mitchell; A. Moiseev; Z. Myers; J. Nishimura; Mitsuaki Nozaki; R. Orito; J. F. Ormes; M. Sasaki; E. S. Seo; Y. Shikaze; R. E. Streitmatter; J. Suzuki; Y. Takasugi; K. Takeuchi; K. Tanaka; T. Yamagami; A. Yamamoto; T. Yoshida; K. Yoshimura
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Physical Review Letters | 2012
K. Abe; H. Fuke; S. Haino; T. Hams; M. Hasegawa; A. Horikoshi; K. C. Kim; A. Kusumoto; M.H. Lee; Y. Makida; S. Matsuda; Y. Matsukawa; J. W. Mitchell; J. Nishimura; Mitsuaki Nozaki; R. Orito; J. F. Ormes; Kenichi Sakai; M. Sasaki; E. S. Seo; R. Shinoda; R. E. Streitmatter; J. Suzuki; Kazunobu Tanaka; N. Thakur; T. Yamagami; A. Yamamoto; T. Yoshida; K. Yoshimura
-TPC) has been developed, which can measure the successive positions of the track of charged particles in a few hundred micron meter pitch. The
The Astrophysical Journal | 2011
Atsushi Takada; H. Kubo; Hironobu Nishimura; Kazuki Ueno; Kaori Hattori; S. Kabuki; Shunsuke Kurosawa; Kentaro Miuchi; Eiichi Mizuta; Tsutomu Nagayoshi; Naoki Nonaka; Y. Okada; R. Orito; H. Sekiya; Atsushi Takeda; T. Tanimori
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Physics Letters B | 2004
T. Tanimori; H. Kubo; Kentaro Miuchi; Tsutomu Nagayoshi; R. Orito; Atsushi Takada; Atsushi Takeda
-TPC consists of the new type of a gas proportional chamber: micro PIxel gas Chamber (
Physical Review Letters | 2012
K. Abe; H. Fuke; S. Haino; T. Hams; M. Hasegawa; A. Horikoshi; A. Itazaki; K. C. Kim; T. Kumazawa; A. Kusumoto; M.H. Lee; Y. Makida; S. Matsuda; Y. Matsukawa; K. Matsumoto; John W. Mitchell; Z. Myers; J. Nishimura; Mitsuaki Nozaki; R. Orito; J. F. Ormes; Kenichi Sakai; M. Sasaki; E. S. Seo; Y. Shikaze; R. Shinoda; R. E. Streitmatter; J. Suzuki; Y. Takasugi; Kengo Takeuchi
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The Astrophysical Journal | 2016
K. Abe; H. Fuke; S. Haino; T. Hams; M. Hasegawa; A. Horikoshi; A. Itazaki; K. C. Kim; T. Kumazawa; A. Kusumoto; M.H. Lee; Y. Makida; S. Matsuda; Y. Matsukawa; K. Matsumoto; J. W. Mitchell; Z. Myers; J. Nishimura; Mitsuaki Nozaki; R. Orito; J. F. Ormes; N. Picot-Clemente; Kazuhiro Sakai; M. Sasaki; E. S. Seo; Y. Shikaze; R. Shinoda; R. E. Streitmatter; J. Suzuki; Y. Takasugi
-PIC) which is one of wireless gas chambers and expected to be robust and stable. Using this
ieee nuclear science symposium | 2003
R. Orito; O. Sasaki; H. Kubo; Kentaro Miuchi; T. Nagayoshi; Y. Okada; A. Takada; Atsushi Takeda; T. Tanimori; Masaru Ueno
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Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2005
Tsutomu Nagayoshi; Atsushi Takada; H. Kubo; Kentaro Miuchi; R. Orito; Y. Okada; Atsushi Takeda; T. Tanimori; Masaru Ueno; Oleg Bouianov; Marina Bouianov
-TPC and the Anger camera for the detection of a scattered gamma ray, we have obtained the first gamma-ray image by the full reconstruction of the direction of gamma rays event by event.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2003
Tsutomu Nagayoshi; H. Kubo; Kentaro Miuchi; A. Ochi; R. Orito; Atsushi Takada; T. Tanimori; Masaru Ueno
Abstract The BESS-Polar spectrometer had its first successful balloon flight over Antarctica in December 2004. During the 8.5-day long-duration flight, almost 0.9 billion events were recorded and 1,520 antiprotons were detected in the energy range 0.1–4.2 GeV. In this Letter, we report the antiproton spectrum obtained, discuss the origin of cosmic-ray antiprotons, and use antiproton data to probe the effect of charge-sign-dependent drift in the solar modulation.
