Electromagnetic modeling of the CSNS H- ion source extraction system

被引：0
|
作者：
Wu Xiao-Bing [1 ]
Ouyang Hua-Fu [1 ]
机构：
[1] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
来源：
CHINESE PHYSICS C | 2012年 / 36卷 / 04期
关键词：
CSNS; electromagnetic; particle tracking; beam transport;
D O I：
10.1088/1674-1137/36/4/014
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
A Penning surface H- ion source test stand has been developed for the China Spallation Neutron Source (CSNS) at the Institute of High Energy Physics (THEP). H- beams with a current up to 50 mA and a pulse length up to 520 mu s at a repetition rate of 25 Hz are obtained at present. In order to improve the extraction system based on both the results of the emittance measurements in experiment and the simulation results of the effect of the extraction system on the beam emittance, three dimensional electromagnetic finite element analysis and particle tracking are undertaken. First, the magnetic field of the deflecting magnet is studied in detail, and then the effect of the extraction geometry on the beam transport is also investigated.
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页码：371 / 375
页数：5
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