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SPring-8 LEPS2 beamline: A facility to produce a multi-GeV photon beam via laser Compton scattering
- Authors
- Muramatsu, N.; Yosoi, M.; Yorita, T.; Ohashi, Y.; Ahn, J.K.; Ajimura, S.; Asano, Y.; Chang, W.C.; Chen, J.Y.; Daté, S.; Gogami, T.; Hamano, H.; Hashimoto, T.; Hiraiwa, T.; Hotta, T.; Ishikawa, T.; Kasamatsu, Y.; Katsuragawa, H.; Kobayakawa, R.; Kohri, H.; Masumoto, S.; Matsumura, Y.; Miyabe, M.; Mizutani, K.; Morino, Y.; Nakano, T.; Nam, T.; Niiyama, M.; Nozawa, Y.; Ohkuma, H.; Ohnishi, H.; Ohta, T.; Oishi, M.; Ozawa, K.; Ryu, S.Y.; Sada, Y.; Saito, H.; Shibukawa, T.; Shimizu, H.; Shirai, R.; Shoji, M.; Sumihama, M.; Suzuki, S.; Tanaka, S.; Taniuchi, Y.; Tokiyasu, A.O.; Tomida, N.; Tsuchikawa, Y.; Watanabe, K.; Yoon, C.J.; Yoshida, C.
- Issue Date
- 2022
- Publisher
- Elsevier B.V.
- Keywords
- Hadron photoproduction; High energy photon beams; Laser Compton scattering; Linear polarization
- Citation
- Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, v.1033
- Indexed
- SCIE
SCOPUS
- Volume
- 1033
- ISSN
- 0168-9002
- Abstract
- We have constructed a new laser-Compton-scattering facility, called the LEPS2 beamline, at the 8 GeV electron storage ring, SPring-8. This facility provides a linearly polarized photon beam in a tagged energy range of 1.3–2.4 GeV. Thanks to a small divergence of the low-emittance storage-ring electrons, the tagged photon beam has a size (σ) suppressed to about 4 mm even after it travels about 130 m to the experimental building that is independent of the storage ring building and contains large detector systems. This beamline is designed to achieve a photon beam intensity higher than that of the first laser-Compton-scattering beamline at SPring-8 by adopting the simultaneous injection of up to four high-power laser beams and increasing a transmittance for the long photon-beam path up to about 77%. The new beamline is under operation for hadron photoproduction experiments. © 2022 Elsevier B.V.
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