在KEK-ATF上通过laser -康普顿散射产生光子
Photon generation by laser-Compton scattering at the KEK-ATF
摘要：
为了研制用于直线对撞机的康普顿极化正电子源，我们在KEK-ATF上进行了激光康普顿散射光子产生实验。在实验中，重复频率为357 MHz的激光脉冲被累积，并且它们的功率在法布里-珀罗光学谐振腔中被增强高达250倍。我们成功地实现了激光脉冲的同步，并使它们与ATF环中的1.3 GeV电子束碰撞，同时保持了激光脉冲在腔中的积累。结果，我们观察到每个电子-激光脉冲交叉26.0 +/- 0.1个光子，相当于每秒产生10^8个光子。
英文摘要：
We performed a photon generation experiment by laser-Compton scattering at the KEK-ATF, aiming to develop a Compton based polarized positron source for linear colliders. In the experiment, laser pulses with a 357 MHz repetition rate were accumulated and their power was enhanced by up to 250 times in the Fabry-Perot optical resonant cavity. We succeeded in synchronizing the laser pulses and colliding them with the 1.3 GeV electron beam in the ATF ring while maintaining the laser pulse accumulation in the cavity. As a result, we observed 26.0 +/- 0.1 photons per electron-laser pulse crossing, which corresponds to a yield of 10^8 photons in a second.
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