SPring-8 LEPS2 beamline: A facility to produce a multi-GeV photon beam via laser Compton scattering
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 (sigma) 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.
Cite
@article{arxiv.2112.07832,
title = {SPring-8 LEPS2 beamline: A facility to produce a multi-GeV photon beam via laser Compton scattering},
author = {N. Muramatsu and M. Yosoi and T. Yorita and Y. Ohashi and J. K. Ahn and S. Ajimura and Y. Asano and W. C. Chang and J. Y. Chen and S. Date and T. Gogami and H. Hamano and T. Hashimoto and T. Hiraiwa and T. Hotta and T. Ishikawa and Y. Kasamatsu and H. Katsuragawa and R. Kobayakawa and H. Kohri and S. Masumoto and Y. Matsumura and M. Miyabe and K. Mizutani and Y. Morino and T. Nakano and T. Nam and M. Niiyama and Y. Nozawa and H. Ohkuma and H. Ohnishi and T. Ohta and M. Oishi and K. Ozawa and S. Y. Ryu and Y. Sada and H. Saito and T. Shibukawa and H. Shimizu and R. Shirai and M. Shoji and M. Sumihama and S. Suzuki and S. Tanaka and Y. Taniuchi and A. O. Tokiyasu and N. Tomida and Y. Tsuchikawa and K. Watanabe and C. J. Yoon and C. Yoshida},
journal= {arXiv preprint arXiv:2112.07832},
year = {2022}
}