S. Nishida
KEK
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Publication
Featured researches published by S. Nishida.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2005
S. Korpar; I. Adachi; K. Fujita; T. Fukushima; A. Gorišek; D. Hayashi; T. Iijima; T. Ikado; T. Ishikawa; H. Kawai; Y. Kozakai; Peter Križan; A. Kuratani; Y. Mazuka; T. Nakagawa; S. Nishida; S. Ogawa; R. Pestotnik; T. Seki; Takayuki Sumiyoshi; Makoto Tabata; Yoshinobu Unno
Abstract A proximity focusing ring imaging Cherenkov detector, with the radiator consisting of two or more aerogel layers of different refractive indices, has been tested in 1 – 4 GeV / c pion beams at KEK. Essentially, a multiple refractive index aerogel radiator allows for an increase in Cherenkov photon yield on account of the increase in overall radiator thickness, while avoiding the simultaneous degradation in single photon angular resolution associated with the increased uncertainty of the emission point. With the refractive index of consecutive layers suitably increasing in the downstream direction, one may achieve overlapping of the Cherenkov rings from a single charged particle. The impact of the observed improvement on the π / K separation at the upgraded Belle detector is discussed.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2006
P. Križan; I. Adachi; S. Fratina; S. Fukushima; A. Gorišek; T. Iijima; H. Kawai; H. Konishi; S. Korpar; Y. Kozakai; T. Matsumoto; S. Nishida; S. Ogawa; S. Ohtake; R. Pestotnik; S. Saitoh; T. Seki; A. Stanovnik; T. Sumiyoshi; Y. Uchida; Y. Unno; S. Yamamoto
