Author: Lim, J.-H.
Paper Title Page
MOPMB057 Automatic Microbeam Focusing for X-Ray Microbeam Experiments at the 4B Beamline of Pohang Light Source-II 220
  • K.H. Gil, H. J. Choi, J.-H. Lim
    PAL, Pohang, Kyungbuk, Republic of Korea
  The 4B beamline of the Pohang Light Source-II performs X-ray microdiffraction and microfluorescence experiments using X-ray microbeams. When performing X-ray micro-experiments, an X-ray microbeam should first be prepared. Up to recently, the microbeams with vertical and horizontal sizes (full width at half maximum) of less than 3 μm have been achieved, by manually adjusting the translations and pitch angles of the vertically and horizontally focusing mirrors, in a Kirkpatrick'Baez (K-B) mirror system. In this research, we developed a program that automates the complex and cumbersome process of microbeam focusing, divided into half-cutting and focusing phases. The developed program was applied to the 4B beamline and enabled the focusing of an X-ray beam to a minimum size within one hour. This paper introduces the algorithms of the program and also examines its performance.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMB057  
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