Photon Generation by Laser-Compton Scattering Using an Optical Resonant Cavity at the KEK-ATF Electron Ring

Hirotaka Shimizu; Sakae Araki; Yoshisato Funahashi; Yosuke Honda; Toshiyuki Okugi; Tsunehiko Omori; Nobuhiro Terunuma; Junji Urakawa; Masao Kuriki; Shuhei Miyoshi; Tohru Takahashi; Yasuaki Ushio; Tachishige Hirose; Kazuyuki Sakaue; Masakazu Washio; Pei Guoxi; Li XiaoPing

doi:10.1143/jpsj.78.074501

Hirotaka Shimizu, Sakae Araki, Yoshisato Funahashi, Yosuke Honda, Toshiyuki Okugi, Tsunehiko Omori, Nobuhiro Terunuma, Junji Urakawa, Masao Kuriki, Shuhei Miyoshi, Tohru Takahashi, Yasuaki Ushio, Tachishige Hirose, Kazuyuki Sakaue, Masakazu Washio, Pei Guoxi, Li XiaoPing

Author information

Hirotaka Shimizu
High Energy Accelerator Research Organization (KEK)
Sakae Araki
High Energy Accelerator Research Organization (KEK)
Yoshisato Funahashi
High Energy Accelerator Research Organization (KEK)
Yosuke Honda
High Energy Accelerator Research Organization (KEK)
Toshiyuki Okugi
High Energy Accelerator Research Organization (KEK)
Tsunehiko Omori
High Energy Accelerator Research Organization (KEK)
Nobuhiro Terunuma
High Energy Accelerator Research Organization (KEK)
Junji Urakawa
High Energy Accelerator Research Organization (KEK)
Masao Kuriki
Graduate School of Advanced Sciences of Matter, Hiroshima University
Shuhei Miyoshi
Graduate School of Advanced Sciences of Matter, Hiroshima University
Tohru Takahashi
Graduate School of Advanced Sciences of Matter, Hiroshima University
Yasuaki Ushio
Graduate School of Advanced Sciences of Matter, Hiroshima University
Tachishige Hirose
Research Institute for Science and Engineering, Waseda University
Kazuyuki Sakaue
Research Institute for Science and Engineering, Waseda University
Masakazu Washio
Research Institute for Science and Engineering, Waseda University
Pei Guoxi
Institute of High Energy Physics, Chinese Academy of Sciences
Li XiaoPing
Institute of High Energy Physics, Chinese Academy of Sciences

Keywords: ATF, Compton, ILC, linear collider, laser, polarized beam, polarized positron, positron, storage ring

JOURNAL RESTRICTED ACCESS

2009 Volume 78 Issue 7 Pages 074501

DOI https://doi.org/10.1143/jpsj.78.074501

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Abstract

We studied γ-ray generation by the laser-Compton scattering using a Fabry–Perot optical resonant cavity at the KEK-ATF electron storage ring. The laser power was enhanced up to 388 W in the optical resonant cavity with an injection power of 7 W in the ATF operation environments. The yield of photons for a crossing of a laser pulse and an electron bunch was 3.3±0.6, which was consistent with a numerical estimate. In this paper, we report construction, installation and future prospect toward the polarized positron generation for the International Linear Collider.

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