电偏转扫描法测量高电荷态ECR源发射度  

Emittance Measurement of Highly Charged Ion Beams Extracted from ECR Ion Source Using Electric Sweep Scanner

作　　者：曹云[1] 马雷[1] 赵红卫[1] 张子民[1] 孙良亭[1] 李锦钰[1] 冯玉成[1] 李锡霞[1] 

机构地区：[1]中国科学院近代物理研究所,兰州730000

出　　处：《高能物理与核物理》2004年第8期885-888,共4页High Energy Physics and Nuclear Physics

基　　金：中国科学院知识创新工程重大项目(KJCX 1 0 9);国家杰出青年科学基金 (10 2 2 5 5 2 3 )资助~~

摘　　要：成功地研制了一套适合于低能离子束流发射度测量的电偏转扫描探测器 .对该探测器的原理和结构作了较详细的描述 ,并给出该探测器对兰州近代物理研究所高电荷态ECR源LECR3引出离子束流发射度的测量结果 .典型结果为 :在引出高压为 15 .97kV ,引出束流为 190 μA时 ,O4 +水平发射度 (x方向 )为 137πmm·mrad ,垂直发射度 (y方向 )为 12 0πmm·mrad(包括 90 %束流 ) .最后 ,对测量结果作了一些分析和讨论 .We have designed and built an emittance scanner which was installed at the beam line LECR3 of the heavy Ion Accelerator Facility in Lanzhou.The scanner measures the emittance of beams from the ECR ion source by the electric sweep method,named as Electric Sweep Scanner(ESS).From analyzing the measured results we found it is contrary to the behavior expected from normal theory of ECR plasma.Typical results are as follows:when the extracted voltage is 15.97kV,total current is 190μA,the horizontal and vertical emittance of O 4+ are 137πmm·mrad and 120πmm·mrad respectively.

关 键 词：电偏转扫描法 ECR离子源 发射度 垂直发射度 引出束流 加速器物理 

分 类 号：O572.2[理学—粒子物理与原子核物理]