超导扭摆磁铁同步辐射光的光电解吸气载

Photon Induced Desorption Gas Load of Synchrotron Radiation from a Superconducting Wiggler

光电解吸气载是同步辐射光源储存环内的主要气载，也是光束线和实验站内的重要气载。本文计算了ＨＬＳ６Ｔ超导扭摆磁铁（Ｓ．Ｃ．Ｗｉｇｇｌｅｒ）的同步辐射光（ＷＳＲ）的光电解吸气载。从ＷＳＲ的各个波长的光通量公式出发，计算ＷＳＲ的光子产额；选取二次发射系数，计算二次电子产额；确定解吸系数，计算气载；这就是本文的思路。

The photon induced desorption(PID) dominates the gas load in the synchrotron radiation(SR) storage ring chamber. It is the important gas load in beam lines and experiment stations also. This paper calculates PID gas load of SR from a 6T superconducting Wiggler at HLS. The photon yield is calculated according the WSR flux formula at first. Then the secondary electron yield is calculated choicing second emission coefficent. The gas load is calculated choicing a suitable desorption coefficent at last.