Development of High Intensity Laser-Electron Photon Beams up to 2.9 GeV at SPring- 8 LEPS Beamline
Development of High Intensity Laser-Electron Photon Beams up to 2.9 GeV at SPring- 8 LEPS Beamline
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在 SPring-8 LEPS 光束线上开发高达 2.9 GeV 的高强度激光电子光子束
DOI：
10.1016/j.nima.2013.11.039
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发表时间：
2014
期刊：
影响因子：
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他全28名
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作者：
N. Muramatsu;T. Hotta;T. Nakano;T. Yorita;M. Yosoi;他全28名
在SPring-8的LEPS光束线上升级了一束激光-康普顿背散射光束，我们称之为“激光-电子光子”光束。我们实现了反向散射光子束强度的增益的1.5-1.8倍的两个相邻的激光束或更高的功率的激光束注入储存环。光子束的最大能量也从2.4 GeV扩展到2.9 GeV与深紫外激光。升级后的束流已被用于LEPS束线上的强子光生实验。基于开发的方法，我们计划同时注入四个高功率激光束的LEPS 2光束线，这已经在SPring-8新建。作为模拟的结果，我们预计标记光子的强度会高出一个数量级，分别接近107 s-1和106 s-1，最高可达2.4 GeV和2.9 GeV。
A laser-Compton backscattering beam, which we call a ‘Laser-Electron Photon’ beam, was upgraded at the LEPS beamline of SPring-8. We accomplished the gains in backscattered photon beam intensities by factors of 1.5–1.8 with the injection of two adjacent laser beams or a higher power laser beam into the storage ring. The maximum energy of the photon beam was also extended from 2.4 GeV to 2.9 GeV with deep-ultraviolet lasers. The upgraded beams have been utilized for hadron photoproduction experiments at the LEPS beamline. Based on the developed methods, we plan the simultaneous injection of four high power laser beams at the LEPS2 beamline, which has been newly constructed at SPring-8. As a simulation result, we expect an order of magnitude higher intensities close to 107s−1and 106s−1for tagged photons up to 2.4 GeV and 2.9 GeV, respectively.