The beam-based calibration of an X-ray pinhole camera at SSRF

作     者：冷用斌 黄国庆 张满洲 陈之初 陈杰 叶恺容 

作者机构：Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2012年第36卷第1期

页      面：80-83页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 070202[理学-粒子物理与原子核物理] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：Supported by NSFC (11075198) 

主　　题：beam diagnostics X-ray pinhole camera point spread function beam size measurement 

摘      要：A pinhole camera for imaging X-ray synchrotron radiation from a dipole magnet is now in operation at the Shanghai Synchrotron Radiation Facility （SSRF） storage *** electron beam size is derived by unfolding the radiation image and the point spread function （PSF） with deconvolution *** performance of the pinhole is determined by the accuracy of the PSF *** article will focus on a beam-based calibration scheme to measure the PSF system by varying the beam images with different quadrupole settings and fitting them with the corresponding theoretical beam *** this method at SSRF,the PSF value of the pinhole is revised from 37 to 44μ*** deviation in beam size between the theoretical value and the measured value isminimized to 4% after *** optimization allows us to observe the horizontal disturbance due to injection down to as small as 0.5μm.