北京FEL电子束时间分辨能谱仪设计  

DESIGN OF TIME-DEPENDENT ELECTRON-BEAM SPECTRA DIAGNOSTICS FOR THE BEIJING FEL

作　　者：赵小风 益关祺 张剑 魏琼 盛树刚 周巧根 张惠民 李云山[2] 庄杰佳[2] 陈元柏[2] 郑树臣[2] 欧阳[2] 李志刚[2] 毛成生[2] 

机构地区：[1]上海原子核研究所,201800 [2]北京高能物理研究所,北京918信箱100039

出　　处：《强激光与粒子束》1992年第1期33-40,共8页High Power Laser and Particle Beams

摘　　要：从Wiggler出来的电子束,经过180°偏转后进人能谱和时间谱诊断系统。180°偏转段设计成既可等时又可消色散传输,等时传输是为满足对电子束微脉冲时间谱诊断,消色散是为满足电子束宏脉冲时间分辨能谱诊断。宏脉冲时间分辨能谱诊断系统由四台匹配透镜、双缝仪、扫描偏转线圈、90°对称双聚焦分析磁铁、位于焦平面的荧光靶、带有象增强器的视频摄象系统和在线计算机图象处理系统组成,其能量分辨好于1000,时间分辨好于60ns。After passing through the Wiggler and the 180°bend , the electron beam is transported to a time-dependent energy spectrometer . The 180°bend is designed for both achromatic and isochronous to suffice measurements of energy and temporal distributions or time-resolution of macropulses . The time -dependent energy spectra system contains four matching quadrupoles , a two -slit device , a slow - deflector sweep coil , a 90°analyzing magnet with horizontal and vertical focus , a quarts plate at the focal-plane of the magnet, a vidican TV camera with microchannel - plate intensifiers and a picture display system with a on -line micro -computer . Energy - resolution ratio of the spectrometer is large than 1000, while time resolution less than 60 ns .

关 键 词：时间分辨能谱 电子束诊断 激光 FEL 

分 类 号：TL653[核科学技术—核技术及应用]