Beam loss particle tracking in J-PARC linac

Sako, Hiroyuki ; Imai, Kenichi; Sato, Susumu ; Sugimura, Hitoshi; Miura, Akihiko ; Maruta, Tomofumi; Kikuzawa, Nobuhiro

J-PARC linac has been operated at 7.2 kW since Nov. 2007. The most serious problem from SDTL (Separated-type Drift-Tube Linac) to ACS (Annular-Coupled Structure) sections is how to suppress the highest beam loss due to $H^{0}$ which have been generated by interactions between $H^{-}$ and remnant gas. Although beam loss has been measured with proportional counters, we have not succeeded to estimate absolute amplitude of $H^{0}$ . We have succeeded to reconstruct proton tracks which are generated from $H^{0}$ using scintillating fiber hodoscopes which were installed in the ACS section.

Language	:	Japanese
Journal	:	Proceedings of 8th Annual Meeting of Particle Accelerator Society of Japan (Internet)
Volume	:
Number	:
Pages	:	3 Pages
Publication Year/Month	:	2011/08
Meeting title	:	第8回日本加速器学会年会
Held date	:	2011/08
Location (city)	:	つくば
Location (country)	:	日本
Patent information	:
PDF	:
Paper URL	:	http://www.pasj.jp/web_publish/pasj8/proceedings/poster/MOPS078.pdf
DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	no keyword
Research Facility	:	J-PARC加速器
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Article of JAEA R&D Review	:
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Registration No. : BB20111011
JAEA Abstracts No. : 40000656
Paper Submission No. : 10591

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