Nuclear Techniques ›› 2015, Vol. 38 ›› Issue (5): 50102-050102.doi: 10.11889/j.0253-3219.2015.hjs.38.050102


Real-time analysis technology on the shape of synchrotron radiation beam

ZHANG Chunbo1,2 WANG Qisheng1 HUANG Sheng1 HE Jianhua1   

  1. 1(Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Zhangjiang Campus, Shanghai 201204, China) 2(University of Chinese Academy of Sciences, Beijing 100049, China)
  • Received:2015-01-21 Revised:2015-03-23 Online:2015-05-10 Published:2015-05-08

Abstract: Background: Synchrotron radiation is a special light produced by synchrotron radiation facility, and has been widely used in many fields because of its properties of broad spectrum, high brilliance and excellent collimation. The beam spot size is one important feature of the beamline. The current method used for measuring the spot size is scanning knife-edge technique, which is accurate but time consuming. Purpose: The aim is to find an effective method to get the spot sizes more quickly and more intuitively based on the image processing. Methods: Basic image processing method and adaptive threshold binarization method are employed to resolve the problem. Results: The results show that the image processing program can get the spot size correctly, although the spot size varies in a large range, and what’s more, the new method can show the information about the spot center and spot symmetry simultaneously. Conclusion: The new method is faster and more intuitive compared with the others currently used and it can be considered as an effective diagnosis tool during beamline operation.

Key words: Synchrotron radiation spot, Real-time analysis, Digital image processing, Histogram, Adaptive threshold