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- H. Ohkuma, M. Shoji, S. Suzuki, K. Tamura, T. Yorita
JASRI/SPring-8, Hyogo-ken
- Y. Arimoto
Osaka University, Osaka
- M. Fujiwara, K. Kawase
RCNP, Osaka
- K. Nakayama, S. Okajima
Chubu University, Kasugai, Aichi
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In order to produce MeV gamma-ray by the Laser Compton scattering (LCS), a high power optically pumped Far Infrared (FIR) laser has been developed at SPring-8. In the case of the SPring-8 storage ring, the momentum acceptance is so large (± 200 MeV) that the scattered electron is re-accelerated, then the stored beam is not lost by the LCS process. The beam diagnostics beamline is used to inject a FIR laser beam against 8-GeV stored electron beam and to extract MeV gamma-ray produced by LCS. The FIR laser system, gamma-ray production system, and measured gamma-ray spectrum will be presented. Future plans will also be introduced. In order to produce higher intense gamma-ray, we are constructing new gamma-ray production system at another beamline.
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