An emittance measurement device for a space-charge dominated electron beam  

作　　者：王文静 黄森林 全胜文 林林 刘克新 

机构地区：[1]State Key Laboratory of Nuclear Physics and Technology,Peking University

出　　处：《Chinese Physics C》2012年第9期867-870,共4页中国物理C（英文版）

基　　金：Supported by Major State Basic Research Development Program of China (2011CB808302);Peking University grant for interdisciplinary or developing disciplinary studies

摘　　要：Beam emittance is one of the most important parameters for electron sources. To investigate the beam emittance of the 3.5-cell DC-SC photocathode injector developed at Peking University, a multi-slit emittance measurement device has been designed and manufactured. The designed slit width, mask thickness and beamlet drift length are 100 ~m, 3 mm and 430 mm respectively. It is suitable for the electron beam with energy of about 5 MeV and the average current less than 0.1 mA. The preliminary measurement result of the rms emittance of the electron beam produced by the DC-SC injector is about 5 7 mm.mrad.Beam emittance is one of the most important parameters for electron sources. To investigate the beam emittance of the 3.5-cell DC-SC photocathode injector developed at Peking University, a multi-slit emittance measurement device has been designed and manufactured. The designed slit width, mask thickness and beamlet drift length are 100 ~m, 3 mm and 430 mm respectively. It is suitable for the electron beam with energy of about 5 MeV and the average current less than 0.1 mA. The preliminary measurement result of the rms emittance of the electron beam produced by the DC-SC injector is about 5 7 mm.mrad.

关 键 词：emittance measurement multi-slit space charge effect DC-SC photocathode injector 

分 类 号：TL503.3[核科学技术—核技术及应用]