Transmission efficiency improvement of the injector line of SFC by particle beam decorrelation  

作　　者：杨尧 原有进 冯玉成 孙良亭 方兴 卢旺 张文慧 曹云 张雪珍 赵红卫 

机构地区：[1]Institute of Modern Physics, Chinese Academy of Sciences [2]University of Chinese Academy of Sciences

出　　处：《Nuclear Science and Techniques》2015年第6期29-34,共6页核技术（英文）

基　　金：Supported by the National Basic Research Program of China(No.2014CB845500);the 100 Talents Program of the CAS(No.Y214160BR0);National Nature Science Foundation of China(No.11221064)

摘　　要：The operation of the HIRFL accelerator has shown that the beam transmission efficiency of the sector focusing cyclotron(SFC) injector line is rather poor. Beam simulations have been performed to investigate the possible causes for this low transmission. It is predicted that the property of transversal coupling of the ion beam from electron cyclotron resonance(ECR) ion source can be an important factor to degrade the beam quality by increasing the beam emittance, resulting in a serious particle loss. An improved operation scheme for the SECRAL associated line has been proposed, and the corresponding experiment was carried out. This paper presents the test results.The operation of the HIRFL accelerator has shown that the beam transmission efficiency of the sector focusing cyclotron（SFC） injector line is rather poor. Beam simulations have been performed to investigate the possible causes for this low transmission. It is predicted that the property of transversal coupling of the ion beam from electron cyclotron resonance（ECR） ion source can be an important factor to degrade the beam quality by increasing the beam emittance, resulting in a serious particle loss. An improved operation scheme for the SECRAL associated line has been proposed, and the corresponding experiment was carried out. This paper presents the test results.

关 键 词：束流传输效率 喷油器 线路 粒子束 HIRFL加速器 电子回旋共振 光束质量 运行方案 

分 类 号：TL503[核科学技术—核技术及应用]