Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2018 Impact factor 0.961

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (8): 115 doi: 10.1007/s41365-018-0444-7

• SYNCHROTRON RADIATION TECHNOLOGY AND APPLICATIONS • Previous Articles     Next Articles

Upgrade of the X-ray pinhole camera system at SSRF

Bo Gao 1,2 • Yong-Bin Leng 1,2 • Han-Jiao Chen 1,2 • Jie Chen 1 • Kai-Rong Ye 1   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Contact: Yong-Bin Leng E-mail:lengyongbin@sinap.ac.cn
  • Supported by:

    This work was supported by the National Science Foundation of China (No.11375255).

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Bo Gao, Yong-Bin Leng, Han-Jiao Chen, Jie Chen, Kai-Rong Ye. Upgrade of the X-ray pinhole camera system at SSRF.Nuclear Science and Techniques, 2018, 29(8): 115     doi: 10.1007/s41365-018-0444-7

Abstract:

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 since 2009. 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.

Key words: X-ray pinhole camera, Transverse beam size, Diagnostic beam line, Point spread function, X-ray quasimonochromator