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Journal Articles

Development of beam scrapers using a 3-Mev linac at J-PARC

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

http://www.pasj.jp/web_publish/pasj2016/proceedings/PDF/MOP0/MOP005.pdf

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$$^{circ}$$ 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.

Journal Articles

Mutation induction with ion beam irradiation of lateral buds of chrysanthemum and analysis of chimeric structure of induced mutants

Yamaguchi, Hiroyasu*; Shimizu, Akemi*; Hase, Yoshihiro; Degi, Konosuke*; Tanaka, Atsushi; Morishita, Toshikazu*

Euphytica, 165(1), p.97 - 103, 2009/01

https://doi.org/10.1007/s10681-008-9767-5
 Times Cited Count：29 Percentile：75.04(Agronomy)

We compared the effects of ion-beam and $$gamma$$-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/$$mu$$m), helium ions (9 keV/$$mu$$m), and $$gamma$$ 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 $$gamma$$ 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.

Journal Articles

Comparison of the mutation inducing effect between ion beams and $$gamma$$-rays; Guineagrass and sorghum

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

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2007-060.pdf

no abstracts in English

Journal Articles

Comparison of the mutation inducing effect between ion beams and $$gamma$$ ray

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

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2006-042.pdf

no abstracts in English

Oral presentation

Comparison of the mutation inducing effect between ion beams and $$gamma$$ rays

Morita, Ryohei*; Morishita, Toshikazu*; Nakagawa, Hitoshi*; Nishimura, Minoru*; Yamaguchi, Hiroyasu*; Yokota, Yuichiro; Hase, Yoshihiro; Tanaka, Atsushi

no journal, , 

no abstracts in English

Oral presentation

Flower breeding by quantum beam technology and their commercialization

Okamura, Masachika*; Momose, Masaki*; Umemoto, Naoyuki*; Toguri, Toshihiro*; Tanaka, Atsushi; Hase, Yoshihiro; Yamaguchi, Hiroyasu*; Morishita, Toshikazu*

no journal, , 

no abstracts in English

Oral presentation

Comparison of the mutagenesis effect between ion beams and $$gamma$$ ray; Guinea grass and sorghum

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

Oral presentation

Difference of chimera structure in mutants induced with ion beam and $$gamma$$ ray irradiation to lateral buds of chrysanthemum

Yamaguchi, Hiroyasu*; Shimizu, Akemi*; Hase, Yoshihiro; Tanaka, Atsushi; Degi, Konosuke*; Morishita, Toshikazu*

no journal, , 

no abstracts in English

Oral presentation

Difference of chimera structure in mutants induced with ion beam and $$gamma$$ ray irradiation to lateral buds of chrysanthemum

Yamaguchi, Hiroyasu*; Shimizu, Akemi*; Hase, Yoshihiro; Tanaka, Atsushi; Degi, Konosuke*; Morishita, Toshikazu*

no journal, , 

no abstracts in English

Oral presentation

Comparison of "efficiency" between ion beams and $$gamma$$ rays with irradiation to rice seed

Yamaguchi, Hiroyasu*; Hase, Yoshihiro; Tanaka, Atsushi; Shikazono, Naoya; Degi, Konosuke*; Shimizu, Akemi*; Morishita, Toshikazu*

no journal, , 

no abstracts in English

Oral presentation

Characteristics of the semidwarf mutants of Tartary buckwheat induced by $$gamma$$ rays and ion beams irradiation

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

11 (Records 1-11 displayed on this page)
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