Upgrade of the X-ray pinhole camera system at SSRF  

作　　者：Bo Gao Yong-Bin Leng Han-Jiao Chen Jie Chen Kai-Rong Ye 

机构地区：[1]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Nuclear Science and Techniques》2018年第8期170-178,共9页核技术（英文）

基　　金：supported by the National Science Foundation of China(No.11375255)

摘　　要：An X-ray pinhole camera has been used to determine the transverse beam size and emittance on the diagnostic beam line of the storage ring at SSRF since2009.The performance of the beam size measurement is determined by the width of the point spread function of the X-ray pinhole camera.Beam-based calibration was carried in 2012 out by varying the beam size at the source point and measuring the image size.However,this calibration method requires special beam conditions.In order to overcome this limitation,the pinhole camera was upgraded and an X-ray quasi-monochromator was installed.A novel experimental method was introduced by combining the pinhole camera with the monochromator to calibrate the point spread function.The point spread function can be accurately resolved by adjusting the angle of the monochromator and measuring the image size.The X-ray spectrum can also be obtained.In this work,the X-ray quasi-monochromator and the novel beam-based calibration method will be presented in detail.An X-ray pinhole camera has been used to determine the transverse beam size and emittance on the diagnostic beam line of the storage ring at SSRF since2009.The performance of the beam size measurement is determined by the width of the point spread function of the X-ray pinhole camera.Beam-based calibration was carried in 2012 out by varying the beam size at the source point and measuring the image size.However,this calibration method requires special beam conditions.In order to overcome this limitation,the pinhole camera was upgraded and an X-ray quasi-monochromator was installed.A novel experimental method was introduced by combining the pinhole camera with the monochromator to calibrate the point spread function.The point spread function can be accurately resolved by adjusting the angle of the monochromator and measuring the image size.The X-ray spectrum can also be obtained.In this work,the X-ray quasi-monochromator and the novel beam-based calibration method will be presented in detail.

关 键 词：照相机系统 X光检查 SSRF 针孔 尺寸测量 刻度方法 传播函数 单位面积 

分 类 号：O434.1[机械工程—光学工程]