Nuclear Techniques ›› 2019, Vol. 42 ›› Issue (11): 110101-110101.doi: 10.11889/j.0253-3219.2019.hjs.42.110101

• SYNCHROTRON RADIATION TECHNOLOGY AND APPLICATIONS •     Next Articles

Design of a cryo-cooled double multilayer monochromator in USAXS beamline at SSRF

Xiaopei SUN1,2,Wanqian ZHU1,2,Zhongmin XU1,2,Hongliang QIN1,2()   

  1. 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
    2. Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
  • Received:2019-07-22 Revised:2019-10-09 Online:2019-11-10 Published:2019-11-18
  • Contact: Hongliang QIN E-mail:qinhongliang@zjlab.org.cn
  • About author:SUN Xiaopei, male, born in 1982, graduated from Chongqing University with a master's degree in 2010, focusing on synchrotron radiation optics and technology
  • Supported by:
    the Joint Fund of National Natural Science Foundation of China(U1832172)

Abstract: Background

A double multilayer monochromator (DMM) is required in the time-resolved ultra small angle X-ray scattering (USAXS) beamline during Shanghai Synchrotron Radiation Facility (SSRF) phase II construction.

Purpose

This study aims at the structure design of DMM for the USAXS beamline of SSRF to satisfy the requirements.

Methods

Based on condition of indirectly cooled by liquid nitrogen, thermal slope error of the multilayer was analyzed and detailed mechanical design of the DMM was introduced. Based on the analysis of the errors caused by the multilayer crystal optics attitude adjustment and the planar four-bar motion mechanism, a Sinbar mechanism based on Pivot and bearing rotating was designed for the DMM. [Results &

Conclusion

Basical analysis and calculation results show the design scheme can meet the requirements of monochromator stability and ultra-high angle resolution. At present, the monochromator is manufacturing and its performance will be tested and reported in the future.

Key words: Synchrotron radiation, Monochromator, Multilayer, Liquid nitrogen cooling, Small angle X-ray scattering

CLC Number: 

  • TL99