标题： TESLA光子对撞机：参数和相互作用区域问题 显示英文标题

标题： Photon collider at TESLA: parameters and interaction region issues

摘要： 光子对撞机（伽马-伽马，伽马-电子）是基于直线对撞机中高能电子的激光后向康普顿散射。 最近的研究表明，在高能峰处的伽马-伽马亮度可以达到0.3--0.5 L（e+e-）。 伽马-伽马碰撞中有趣过程的典型截面比e+e-碰撞中的高一个数量级，因此伽马-伽马碰撞的事件数将多于e+e-碰撞。 本文简要讨论了TESLA上可能的光子对撞机参数和激光方案。 显示英文摘要

摘要： Photon colliders (gamma-gamma, gamma-e) are based on backward Compton scattering of laser light off the high energy electrons of linear colliders. Recent study has shown that the gamma-gamma luminosity in the high energy peak can reach 0.3--0.5 L (e+e-). Typical cross sections of interesting processes in gamma-gamma collisions are higher than those in e+e- collisions by about one order of magnitude, so the number of events in gamma-gamma collisions will be more than that in e+e- collisions. In this paper possible parameters of a photon collider at TESLA and a laser scheme are briefly discussed.