Beam transverse size and emittance measurement of HLS Ⅱ using interferometry

Tang Kai; Wang Jigang; Sun Baogen; Tang Leilei; Lu Ping; Yang Yongliang; Cheng Chaocai; Li Hao

doi:10.11884/HPLPB201527.075101

Volume 27 Issue 07

Jun. 2015

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Article Navigation > High Power Laser and Particle Beams > 2015 > 27(07): 075101

Cui Bo, He Shukai, Liu Hongjie, et al. Neutron spectrum measurement for picosecond laser pulse neutron source experiment with liquid scintillator detector[J]. High Power Laser and Particle Beams, 2016, 28: 124005. doi: 10.11884/HPLPB201628.160414

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Tang Kai, Wang Jigang, Sun Baogen, et al. Beam transverse size and emittance measurement of HLS Ⅱ using interferometry[J]. High Power Laser and Particle Beams, 2015, 27: 075101. doi: 10.11884/HPLPB201527.075101

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Beam transverse size and emittance measurement of HLS Ⅱ using interferometry

doi: 10.11884/HPLPB201527.075101

1.
National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei 230026,China

Received Date: 2015-02-02
Rev Recd Date: 2015-04-23
Publish Date: 2015-06-23

Abstract

Abstract

With the purpose of measuring small beam size of HLS Ⅱ after upgrade, a beam transverse size and emittance measurement system of HLS Ⅱ has been developed. This paper introduces briefly the principle of measuring beam transverse size using interferometry in visible light. It illustrates in detail the software system, hardware system and the image processing algorithm of the measurement system. In order to eliminate the background noise of CCD, a lookup table between the background noise of CCD and the beam intensity has been established. In conclusion, the experiment results are presented at multi-bunch mode. The measured beam horizontal size is 265 m and the measurement error is 5.78 m, and the beam vertical size is 114 m and the measurement error is 4.89 m.
- visible light,
- transverse size,
- emittance,
- interferometry,
- background noise

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