HIRFL改造中的加速器物理问题  

Problems of Accelerator Physics of Upgrading HIFRL

作　　者：唐靖宇[1] 王义芳[1] 尹全民[1] 

机构地区：[1]中国科学院近代物理研究所,甘肃兰州73000

出　　处：《原子核物理评论》2000年第2期95-99,共5页Nuclear Physics Review

基　　金：国家大科学工程HIRFL-CSR冷却储存环项目资助&&

摘　　要：从加速器运行的角度对兰州重离子加速器 HIRFL建成以来所存在的问题进行了总结 ,结合放射束物理和冷却储存环 CSR对 HIRFL的新要求 ,从加速器的物理设计方面提出了一些改进方案 .主要问题有 :超低能束流传输的空间电荷效应的影响 ,扇聚焦回旋加速器 SFC高频加速电压不对称对束流轨道的影响 ,用半频聚束的方式补偿两台回旋加速器的纵向不匹配 ,前束线上聚束器的工作模式的选取 ,强杂散磁场对超低能和低能束流传输的影响 ,分离扇回旋加速器 SSC注入区过垫补磁场对注入束流轨道的影响 ,SFC和 SSC的单圈引出 。From the viewpoints of the HIRFL operation and the new requirements to HIRFL by the study of radioactive beam physics and CSR project, the HIRFL upgrading program has been proposed after studying the existing problems found during the operation and new problems when increasing the beam intensιty and ion variety. The accelerator physics problems of the upgrading program were discussed here, which include the space charge effect on the very low energy beam line, non parity acceleration at the injector cyclotron SFC, longitudinal match between two cyclotrons, strong magnetic field leakage afluence on the beam transfer at low and very low energy, residual first harmonic magnetic field in the main cyclotron SSC injection region, the low efficiency and beam quality of heavy ions after through stripper etc.

关 键 词：空间电荷效应 束流纵向匹配 HIRFL 加速器 

分 类 号：TL56[核科学技术—核技术及应用]