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Hirano, Koichiro; Asano, Hiroyuki; Ishiyama, Tatsuya; Ito, Takashi; Okoshi, Kiyonori; Oguri, Hidetomo; Kondo, Yasuhiro; Kawane, Yusuke; Kikuzawa, Nobuhiro; Sato, Yoshikatsu; et al.
Proceedings of 13th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.310 - 313, 2016/11
We have used a beam scraper with the incident angle of 65deg to reduce the beam power deposition density in the MEBT between a 324 MHz RFQ and a 50-MeV DTL of the J-PARC linac. The 65 scraper was irradiated by the H
beam up to particle number of 1.47E22. We observed a lot of surface projections with several hundred micrometers high in the beam irradiation damage on the scraper by using the laser microscope. In order to study the limits of scrapers, we constructed a new 3 MeV linac at J-PARC. We will conduct the scraper irradiation test at the end of this year.
Yamaguchi, Hiroyasu*; Shimizu, Akemi*; Hase, Yoshihiro; Degi, Konosuke*; Tanaka, Atsushi; Morishita, Toshikazu*
Euphytica, 165(1), p.97 - 103, 2009/01
Times Cited Count:29 Percentile:75.04(Agronomy)We compared the effects of ion-beam and -ray irradiation on mutation induction in axillary buds of chrysanthemum, and analyzed the chimeric structure of the resulting mutants. Axillary buds were irradiated with carbon ions (mean LET 122 keV/
m), helium ions (9 keV/
m), and
rays. The lower five nodes of shoots elongating from the irradiated buds were cut one by one, and new shoots were allowed to grow. This procedure was repeated twice and flower color mutation was investigated. Chimeric structure was analyzed by comparing the flower color of mutants to that of plants regenerated from the roots. All the flower color mutants induced with
rays were periclinal chimeras. In contrast, some mutants obtained with ion beams had the same flower color as that of the plants derived from the roots. This suggests that they were solid mutants, where both LI and LIII tissues were derived from the same mutated cell.
Nakagawa, Hitoshi*; Inafuku, Masashi*; Kusaba, Makoto*; Yamaguchi, Hiroyasu*; Morishita, Toshikazu*; Morita, Ryohei*; Nishimura, Minoru*; Hoeman, S.*; Yokota, Yuichiro; Hase, Yoshihiro; et al.
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 72, 2008/03
no abstracts in English
Morita, Ryohei*; Morishita, Toshikazu*; Nakagawa, Hitoshi*; Nishimura, Minoru*; Yamaguchi, Hiroyasu*; Yokota, Yuichiro; Hase, Yoshihiro; Tanaka, Atsushi
JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 78, 2007/02
no abstracts in English
Morita, Ryohei*; Morishita, Toshikazu*; Nakagawa, Hitoshi*; Nishimura, Minoru*; Yamaguchi, Hiroyasu*; Yokota, Yuichiro; Hase, Yoshihiro; Tanaka, Atsushi
no journal, ,
no abstracts in English
Okamura, Masachika*; Momose, Masaki*; Umemoto, Naoyuki*; Toguri, Toshihiro*; Tanaka, Atsushi; Hase, Yoshihiro; Yamaguchi, Hiroyasu*; Morishita, Toshikazu*
no journal, ,
no abstracts in English
Nakagawa, Hitoshi*; Inafuku, Masashi*; Kusaba, Makoto*; Yamaguchi, Hiroyasu*; Morishita, Toshikazu*; Morita, Ryohei*; Nishimura, Minoru*; Hoeman, S.*; Yokota, Yuichiro; Hase, Yoshihiro; et al.
no journal, ,
no abstracts in English
Yamaguchi, Hiroyasu*; Shimizu, Akemi*; Hase, Yoshihiro; Tanaka, Atsushi; Degi, Konosuke*; Morishita, Toshikazu*
no journal, ,
no abstracts in English
Yamaguchi, Hiroyasu*; Shimizu, Akemi*; Hase, Yoshihiro; Tanaka, Atsushi; Degi, Konosuke*; Morishita, Toshikazu*
no journal, ,
no abstracts in English
Yamaguchi, Hiroyasu*; Hase, Yoshihiro; Tanaka, Atsushi; Shikazono, Naoya; Degi, Konosuke*; Shimizu, Akemi*; Morishita, Toshikazu*
no journal, ,
no abstracts in English
Morishita, Toshikazu*; Shimizu, Akemi*; Yamaguchi, Hiroyasu*; Degi, Konosuke*; Mukasa, Yuji*; Aii, Jotaro*; Hase, Yoshihiro; Shikazono, Naoya; Tanaka, Atsushi; Miyazawa, Yutaka*; et al.
no journal, ,
no abstracts in English