中文摘要：

介绍了根据“阳”加速器现场环境设计Thomson散射诊断系统的方法和思路。由本底辐射出发，研究了诊断系统的重要参数，如探针光的能量、脉宽以及各光学元件的参数；同时，给出探针光和收光系统光路的设计安排；最后，讨论了杂散光及噪声的来源，并给出抑制或降低其影响的方法。

英文摘要：

In this paper method and design of Thomson scattering diagnostic system based on local conditions of Yang accelerator have been introduced. Many key parameters of the system have been studied grounded on the background radiations, such as energy and pulse duration of the probe laser, as well as the parameters of the optical equipment. At the same time, the layout of the probe laser and optical collecting system has been presented. At last, the sources of stray light and noise has been discussed, and the method to restrain or reduce their influence has also been studied.