四极透镜电流对CT法测束流发射度的影响  

Influence of quadrupole electromagnet current on emission beam current measurement by CT method

作　　者：汪宇宏[1] 江盛[1] 邹长丽[2] 曹泽新[1] 朱旭[1] 尚尔虎[1] 

机构地区：[1]沈阳航空工业学院,辽宁沈阳110136 [2]沈阳师范大学物理学院,辽宁沈阳110136

出　　处：《沈阳航空工业学院学报》2007年第5期81-83,共3页Journal of Shenyang Institute of Aeronautical Engineering

摘　　要：利用CT法测量束流发射度是近年来出现的高能强流速束流发射度高精度测量诊断技术。主要就四极透镜电流变化带来的角度分布不同对束流发射度重建精度的影响进行了研究,选取了系列不同的重建角度分布进行模拟计算。研究结果表明,不同的角度分布对重建精度有很大影响,当角度均匀取值时,重建精度最佳。Using CT to measure emission beam current, one higher accuracy measuring diagnosis technique,appears in recent years in field of higher energy density and stronger current velocity emission beam current measurement. This text mainly focused on the reestablishment accuracy influence of the dissimilarity emission beam current brought by quadrupole electromagnet electric current and its angle distribution, carry on simulation calculation selecting different reestablishment angle distribution series. Study result showed that the different angle distribution influence the reestablishment accuracy greatly, and average angle distribution have better reestablishment accuracy.

关 键 词：二维横向相空间密度 代数重建算法 投影角度 

分 类 号：O572.21[理学—粒子物理与原子核物理] TL501.5[理学—物理]