Production of intense high energy gamma beam for LEPS2 project at SPring-8

Tetsuhiko Yorita, Norihito Muramatsu, Tomoaki Hotta, Takashi Nakano, Masaya Oka, Masaru Yosoi, Schin Daté, Yuji Ohashi, Haruo Ohkuma, Masaya Oishi, Yuichi Okayasu, Masazumi Shoji, Shinsuke Suzuki, Yukiko Taniuchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Construction of new beam line for LEPS2 Project at SPring-8 has been done and beam commissioning has been carried. LEPS2 is the project for high energy hadron physics using intense high energy gamma beam as probe. The gamma beam is produced by laser backward Compton scattering with injecting high power UV laser to the 8 GeV electron beam at long straight section (LSS) of SPring-8 storage ring. The target intensities of the gamma beam are ∼107/s for Eγ<2.4 GeV, ∼106/s for Eγ<2.9 GeV. For these purpose, new beam line with new frontend laser injection system is constructed. Some chambers and absorbers of storage ring are modified from regular type to get enough aperture for laser injection. The laser monitor system is also installed at the LSS for tuning the laser injecting direction. The beam commissioning has been carried by injecting 355 nm UV laser of total 56 W to stored electron beams of 100 mA operation and about 7*106/s gamma ray has been obtained successfully.

Original languageEnglish
Title of host publicationIPAC 2013
Subtitle of host publicationProceedings of the 4th International Particle Accelerator Conference
Pages2162-2164
Number of pages3
Publication statusPublished - 2013
Externally publishedYes
Event4th International Particle Accelerator Conference, IPAC 2013 - Shanghai, China
Duration: 2013 May 122013 May 17

Publication series

NameIPAC 2013: Proceedings of the 4th International Particle Accelerator Conference

Other

Other4th International Particle Accelerator Conference, IPAC 2013
CountryChina
CityShanghai
Period13/5/1213/5/17

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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