| 1 | Velocity bunching for the linac of Shanghai Deep UV FEL facility显示文摘High brightness electron beam is one of the main goals of the research and development effort in RF photo-injectors.Compared with the normally used magnetic chicane,an alternative scheme,commonly known as 'velocity bunching',has been proposed as a tool to compress electron beam pulses in modern high brightness photo-injector sources.This paper presents numerical optimization systematically and the first attempt to demonstrate the velocity bunching scheme on SDUV-FEL linac experimentally.The relationship between the degree of bunching and the off-crest phase of the accelerating structure is explored experimentally.Velocity bunching operating mode illustrates flexible performances with an intrinsic machine jitter,which agrees well with the theoretical prediction. | ZHANG Meng GU Duan GU Qiang LIN Guoqiang LAN Taihe WANG Xingtao DENG Haixiao | 2012 | Nuclear Science and Techniques2012，23，3： | 1 |
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