Feasibility study of ultra-short gamma ray pulse generation by laser Compton scattering in an electron storage ring
Feasibility study of ultra-short gamma ray pulse generation by laser Compton scattering in an electron storage ring
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电子存储环激光康普顿散射产生超短伽马射线脉冲的可行性研究
DOI：
10.1016/j.nima.2010.02.035
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
平義隆
中科院分区：
文献类型：
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作者：
岡野健太郎;野地寿治;中沢佑起;百井雄一;藤原栄人;徳山英利;平義隆
我们正在研制一种基于激光康普顿散射技术的超短γ射线脉冲源。超短伽马射线脉冲可以通过从垂直于轨道平面的方向将飞秒激光脉冲注入到在电子存储环中循环的电子束中来产生。对于750 MeV的电子储存环和商用飞秒激光器，伽马射线的能量、强度和脉冲宽度分别估计为6.6 MeV、2.4× 106 photons s-1和288 fs。进行了初步的正面碰撞实验。测量的光谱形状与模拟结果非常一致，包括EGS 5代码计算的探测器响应。结果表明，γ射线的产生是通过激光康普顿散射发生的，并证实了90°碰撞情况下γ射线强度估计的有效性。
We are developing an ultra-short gamma ray pulse source based on laser Compton scattering technology. Ultra-short gamma ray pulses can be generated by injecting femtosecond laser pulses into the electron beam circulating in an electron storage ring from the direction perpendicular to the orbital plane. The energy, intensity, and pulse width of the gamma rays are estimated to be 6.6MeV, 2.4×106photons s−1, and 288fs, respectively, for the case of a 750MeV electron storage ring with a commercially available femtosecond laser. A preliminary head-on collision experiment was conducted. The measured spectral shape agreed well with the simulation, including the detector response calculated by the EGS5 code. The results implied that the generation of gamma rays occurred by laser Compton scattering and confirmed the validity of the estimation of the gamma ray intensity in the case of 90° collisions.