The SRI Beam Size Monitor Developed at NSRRC

Author

Tseng, T.C. ; Wang, D.J. ; Perng, S.Y. ; Lin, C.J. ; Ho, H.C. ; Kuan, C.K. ; Wang, Jeremy ; Chen, J.R.

Author_Institution

NSRRC, Hsinchu, Taiwan, tctseng@nsrrc.org.tw

fYear

2005

fDate

16-20 May 2005

Firstpage

3465

Lastpage

3467

Abstract

A beam size monitor based on the synchrotron radiation interferometer (SRI) was installed in the NSRRC TLS. This monitor consists of a simple diagnostic beamline with a water-cooled beryllium mirror inside and a detecting optical system for both vertical and horizontal beam size measurement. The beam sizes measured are 47 micron and 160 micron respectively and are more close to the theoretical values than the synchrotron image monitor. Comparing with other monitors, at least 1 micron beam size variation is detectable. To minimize the thermal effect, the mirror is located far away from the source point and closed to the detecting optical system. The thermal distortion of the mirror is quite small measured by a portable long trace profiler (LTP) and agrees with the simulating analysis. The detailed monitor system design and testing results are presented in this paper.

Keywords

Analytical models; Distortion measurement; Mirrors; Optical detectors; Optical distortion; Optical interferometry; Radiation monitoring; Size measurement; Synchrotron radiation; System analysis and design;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the

Print_ISBN

0-7803-8859-3

Type

conf

DOI

10.1109/PAC.2005.1591506

Filename

1591506