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Dive into the research topics where Toshiro Matsumura is active.

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Featured researches published by Toshiro Matsumura.


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2000

Performance of a PbWO4 crystal calorimeter for 0.2–1.0 GeV electrons

H. Shimizu; Y Sakamoto; T. Hashimoto; K. Abe; Yasuhiro Asano; T. Kinashi; T. Matsumoto; Toshiro Matsumura; H. Okuno; H.Y. Yoshida

Abstract The performance of a calorimeter prototype of PbWO 4 crystals has been tested by using 0.2–1.0 GeV electrons. The calorimeter comprises nine crystals, each 20 mm ×20 mm ×200 mm , arranged in a 3×3 matrix. A phototube was connected to each crystal to collect the signal. The energy resolution is obtained to be (σ/E) 2 =((0.014±0.001)/E) 2 +((0.025±0.001)/ E ) 2 +(0.000±0.027) 2 at 13°C, where E is the energy given in GeV. The position of the incident electron beam has been measured every 2 mm step. The position resolution at the center of the crystal is obtained to be ((2.6±0.1)/ E ) 2 +(0.4±0.6) 2 mm .


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2008

Barrel photon detector of the KEK KL0→π0νν¯ experiment

Y. Tajima; Jung Keun Ahn; Y. Akune; Y. Aruga; M. Doroshenko; Y. Hsiung; A. Iijima; Y. Ikemoto; T. Inagaki; S. Ishibashi; N. Ishihara; H. Ishii; M. Itaya; M. Iwai; T. Iwata; S. Kobayashi; S. Komatsu; T. K. Komatsubara; A. S. Kurilin; H. S. Lee; S. Y. Lee; G. Y. Lim; Toshiro Matsumura; T. Mizuhashi; Hideki Morii; T. Morimoto; T. Nomura; N. Nishi; J. Nix; H. Okuno


Physics Letters B | 2010

Measurement of the incoherent gammad-->varphipn photoproduction near threshold

William Chang; M. Miyabe; T. Nakano; D. S. Ahn; J. K. Ahn; H. Akimune; Yasuhiro Asano; Schin Date; H. Ejiri; H. Fujimura; Mamoru Fujiwara; S. Fukui; Shinji Hasegawa; K. Hicks; K. Horie; Takashi Hotta; K. Imai; Takeshi Ishikawa; Tadahisa Iwata; Yoshikiyo Kato; Hikaru Kawai; K. Kino; Hideki Kohri; Noritaka Kumagai; S. Makino; Tatsuma D. Matsuda; Toshiro Matsumura; N. Matsuoka; T. Mibe; M. Miyachi


Physics Letters B | 2010

Measurement of the incoherent ? d ? ? p n photoproduction near threshold

William Chang; M. Miyabe; T. Nakano; David S. Ahn; J. K. Ahn; H. Akimune; Yasuhiro Asano; Schin Date; H. Ejiri; H. Fujimura; Mamoru Fujiwara; S. Fukui; Shinji Hasegawa; K. Hicks; K. Horie; T. Hotta; K. Imai; Takeshi Ishikawa; Tadahisa Iwata; Yoshikiyo Kato; H. Kawai; K. Kino; Hideki Kohri; Noritaka Kumagai; S. Makino; Tatsuma D. Matsuda; Toshiro Matsumura; N. Matsuoka; Tsutomu Mibe; M. Miyachi


Physical Review Letters | 2010

Near-Threshold ?(1520) Production by the ?[over ?]p?K^{+}?(1520) Reaction at Forward K^{+} Angles

Hideki Kohri; D. S. Ahn; J. K. Ahn; H. Akimune; Yasuhiro Asano; William Chang; Schin Date; H. Ejiri; S. Fukui; H. Fujimura; Mamoru Fujiwara; Shuji Hasegawa; K. Hicks; Atsushi Hosaka; Takashi Hotta; K. Imai; Takeshi Ishikawa; Tadahisa Iwata; Hikaru Kawai; Z. Y. Kim; K. Kino; Noritaka Kumagai; S. Makino; Tatsuma D. Matsuda; Toshiro Matsumura; N. Matsuoka; T. Mibe; M. Miyabe; Y. Miyachi; Masato Morita


Physical Review C | 2009

Evidence for the Theta+ in the gammad-->K+K-pn reaction by detecting K+K- pairs

T. Nakano; N. Muramatsu; D. S. Ahn; J. K. Ahn; H. Akimune; Yasuhiro Asano; William Chang; Schin Date; H. Ejiri; H. Fujimura; Mamoru Fujiwara; S. Fukui; Hiroshi H. Hasegawa; K. Hicks; K. Horie; Takashi Hotta; K. Imai; Tetsuya Ishikawa; Tadahisa Iwata; Yoshikiyo Kato; Hikaru Kawai; Z. Y. Kim; K. Kino; Hideki Kohri; N. Kumagai; S. Makino; Tatsuma D. Matsuda; N. Matsuoka; Toshiro Matsumura; T. Mibe


Physical Review C | 2009

Backward-angle ? photoproduction from protons at E_{?}=1.62.4 GeV

M. Sumihama; D. S. Ahn; J. K. Ahn; H. Akimune; Yasuhiro Asano; William Chang; Schin Date; H. Ejiri; H. Fujimura; Mamoru Fujiwara; S. Fukui; Shuji Hasegawa; K. Hicks; Takashi Hotta; K. Imai; Takeshi Ishikawa; Tadahisa Iwata; Yoshikiyo Kato; Hikaru Kawai; K. Kino; Hideki Kohri; N. Kumagai; Tatsuma D. Matsuda; Toshiro Matsumura; T. Mibe; M. Miyabe; N. Muramatsu; T. Nakano; Masayuki Niiyama; M. Nomachi


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2008

Barrel photon detector of the KEK KL0-->pinunu experiment

Y. Tajima; Jung Keun Ahn; Yasuhiro Akune; Y. Aruga; M. Yu. Doroshenko; Y.B. Hsiung; A. Iijima; Y. Ikemoto; T. Inagaki; S. Ishibashi; N. Ishihara; H. Ishii; M. Itaya; M. Iwai; Tadahisa Iwata; Satoru Kobayashi; S. Komatsu; T. Komatsubara; A. S. Kurilin; Hyuk Lee; Schuyler Lee; G. Y. Lim; Toshiro Matsumura; T. Mizuhashi; Hideki Morii; T. Morimoto; Takashi Nomura; N. Nishi; J. Rayford Nix; Hideki Okuno


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2008

Barrel photon detector of the KEK K L 0 ? p 0 ? ? experiment

Y. Tajima; Jung Keun Ahn; Yasuhiro Akune; Y. Aruga; M. Yu. Doroshenko; Y.B. Hsiung; A. Iijima; Y. Ikemoto; T. Inagaki; S. Ishibashi; N. Ishihara; H. Ishii; M. Itaya; M. Iwai; Tadahisa Iwata; Satoru Kobayashi; S. Komatsu; T. K. Komatsubara; A. S. Kurilin; Hyuk Lee; Schuyler Lee; G. Y. Lim; Toshiro Matsumura; T. Mizuhashi; Hideki Morii; T. Morimoto; Takashi Nomura; N. Nishi; J. Rayford Nix; Hideki Okuno


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2008

Barrel photon detector of the KEK experiment

Y. Tajima; Jung Keun Ahn; Y. Akune; Y. Aruga; M. Doroshenko; Y. Hsiung; A. Iijima; Y. Ikemoto; T. Inagaki; S. Ishibashi; N. Ishihara; H. Ishii; M. Itaya; M. Iwai; T. Iwata; S. Kobayashi; S. Komatsu; T. Komatsubara; A. S. Kurilin; H. S. Lee; S. Y. Lee; G. Y. Lim; Toshiro Matsumura; T. Mizuhashi; Hideki Morii; T. Morimoto; T. Nomura; N. Nishi; J. Nix; Hideki Okuno

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Yasuhiro Asano

Japan Atomic Energy Research Institute

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K. Imai

Japan Atomic Energy Agency

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