SIMION simulation of a slow pulsed positron beam  

作　　者：许红霞 刘建党 高传波 翁惠民 叶邦角 

机构地区：[1]Department of Modern Physics,University of Science and Technology of China

出　　处：《Chinese Physics C》2012年第3期251-255,共5页中国物理C（英文版）

基　　金：Supported by Major Program of National Natural Science Foundation of China (10835006);National Natural Science Foundation of China (10675114)

摘　　要：A new slow pulsed positron beam, including a positron source, a moderator, a chopper, a prebuncher, a main-buneher and a sample chamber, etc, has been installed and tested. It is necessary to simulate the acceleration, transportation and space focusing of positrons to meet the needs of beam debugging and further positron annihilation experiments. The result from SIMION simulations shows that the radius of the focused positron beam is less than 5 mm, which is further confirmed in our practical debugging process.A new slow pulsed positron beam, including a positron source, a moderator, a chopper, a prebuncher, a main-buneher and a sample chamber, etc, has been installed and tested. It is necessary to simulate the acceleration, transportation and space focusing of positrons to meet the needs of beam debugging and further positron annihilation experiments. The result from SIMION simulations shows that the radius of the focused positron beam is less than 5 mm, which is further confirmed in our practical debugging process.

关 键 词：ANNIHILATION slow pulsed positron beam SIMULATION 

分 类 号：O572.322[理学—粒子物理与原子核物理]