期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Emittance measurement & optimization for the photocathode RF gun with laser profile shaping
1
作者 刘圣广 masafumi fukuda +2 位作者 Sakae Araki Nobuhiro Terunuma Junji Urakawa 《Chinese Physics C》 SCIE CAS CSCD 2010年第5期584-588,共5页
The Laser Undulator Compact X-ray source (LUCX) is a test bench for a compact high brightness X-ray generator, based on inverse Compton Scattering at KEK, which requires high intensity multi-bunch trains with low tr... The Laser Undulator Compact X-ray source (LUCX) is a test bench for a compact high brightness X-ray generator, based on inverse Compton Scattering at KEK, which requires high intensity multi-bunch trains with low transverse emittance. A photocathode RF gun with emittance compensation solenoid is used as an electron source. Much endeavor has been made to increase the beam intensity in the multi-bunch trains. The cavity of the RF gun is tuned into an unbalanced field in order to reduce space charge effects, so that the field gradient on the cathode surface is relatively higher when the forward RF power into gun cavity is not high enough. A laser profile shaper is employed to convert the driving laser profile from Gaussian into uniform. In this research we seek to find the optimized operational conditions for the decrease of the transverse emittance. With the uniform driving laser and the unbalanced RF gun, the RMS transverse emittance of a 1 nC bunch has been improved effectively from 5.46 πmm·mrad to 3.66 πmm·mrad. 展开更多
关键词 laser shaping space charge effect EMITTANCE photocathode RF gun
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部