束团相空间分布重建技术在西安200MeV质子应用装置的应用  

Application of Iterative Reconstruction for Beam Phase Space Measurement at Xi’an Proton Application Facility

作　　者：王敏文 王忠明 郑曙昕[3] 王迪[1,2] 杨业 刘卧龙[1,2] 王百川 王茂成 张辉 闫逸花[1,2] 吕伟 邱孟通 邢庆子[3] WANG Min-wen;WANG Zhong-ming;ZHENG Shu-xin;WANG Di;YANG Ye;LIU Wo-long;WANG Bai-chuan;WANG Mao-cheng;ZHANG Hui;YAN Yi-hua;LYU Wei;QIU Meng-tong;XING Qing-zi(State Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Xi’an 710024,China;Northwest Institute of Nuclear Technology,Xi’an 710024,China;Department of Engineering Physics,Tsinghua University,Beijing 100084,China)

机构地区：[1]强脉冲辐射环境模拟与效应国家重点实验室,西安710024 [2]西北核技术研究所,西安710024 [3]清华大学工程物理系,北京100084

出　　处：《现代应用物理》2021年第3期41-47,55,共8页Modern Applied Physics

基　　金：国家科技重大专项资助项目(2014ZX01022-301)。

摘　　要：采用迭代重建的方法,基于多个不同相移下测量的截面重建束流横向相空间分布,给出了西安200 MeV质子应用装置直线段出口束流的横向相空间分布,与利用发射度仪直接测量结果相比,相空间分布Twiss参数的偏差在17%以内。进一步将迭代重建中的横向动力学计算拓展到同步环纵向动力学计算,实现了同步环束流纵向相空间的重建。By using an iterative reconstruction method,the transverse phase spaces of the beam at the outlet of the linac at Xi’an 200 MeV Proton Application Facility(XiPAF)are successfully obtained based on the transverse phase space distribution of the reconstructed beam measured by multiple different profiles.Compared with the results measured directly by emittance meter,the relative deviation of measured Twiss parameters of phase spaces is less than 17%.Furthermore,the transverse dynamics calculation in iterative reconstruction is extended to the longitudinal dynamics calculation of synchrotron,and the longitudinal phase space reconstruction of synchrotron beam is realized.

关 键 词：横向相空间 纵向相空间 迭代重建 Twiss参数 截面测量 

分 类 号：TL506[核科学技术—核技术及应用]