渡越辐射及其在北京自由电子激光置束测中的应用
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摘要: 在北京自由电子激光器装置的性能改进中，采用了基于渡越辐射的电子束诊断方法。描述了渡越辐射应用于电子束参数测量的基本理论，介绍了BFEL中利用渡越辐射进行的实验方案，并报导了初步的结果。Abstract: The Beijing FEL (BFEL) is a infrared FEL facility based on the rf linac. In order to improve its beam diagnostic system transition radiation has been used instead of the original phosphor target. Beam profile, size, relative position and divergence in transverse were obtained using optical transition radiation (OTR). The principle of transition radiation used for beam diagnosis and the setup for OTR measurement are described. Some preliminary results are presented．
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Key words:
- transition radiation /
- beam diagnosis /
- free electron laser
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