A laser-Compton scattering prototype experiment at 100 MeV linac of Shanghai Institute of Applied Physics

W Luo; W Xu; Q Y Pan; X Z Cai; J G Chen; Y Z Chen; G T Fan; G W Fan; W Guo; Y J Li; W H Liu; G Q Lin; Y G Ma; W Q Shen; X C Shi; B J Xu; J Q Xu; Y Xu; H O Zhang; Z Yan; L F Yang; M H Zhao

doi:10.1063/1.3282445

A laser-Compton scattering prototype experiment at 100 MeV linac of Shanghai Institute of Applied Physics

Rev Sci Instrum. 2010 Jan;81(1):013304. doi: 10.1063/1.3282445.

Authors

W Luo¹, W Xu, Q Y Pan, X Z Cai, J G Chen, Y Z Chen, G T Fan, G W Fan, W Guo, Y J Li, W H Liu, G Q Lin, Y G Ma, W Q Shen, X C Shi, B J Xu, J Q Xu, Y Xu, H O Zhang, Z Yan, L F Yang, M H Zhao

Affiliation

¹ Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China.

PMID: 20113090
DOI: 10.1063/1.3282445

Abstract

As a prototype of the Shanghai Laser Electron Gamma Source in the Shanghai Synchrotron Radiation Facility, an x-ray source based on laser-Compton scattering (LCS) has been installed at the terminal of the 100 MeV linac of the Shanghai Institute of Applied Physics. LCS x-rays are generated by interactions between Q-switched Nd:yttrium aluminum garnet laser pulses [with wavelength of 1064 nm and pulse width of 21 ns (full width at half maximum)] and electron bunches [with energy of 108 MeV and pulse width of 0.95 ns (rms)] at an angle of 42 degrees between laser and electron beam. In order to measure the energy spectrum of LCS x-rays, a Si(Li) detector along the electron beam line axis is positioned at 9.8 m away from a LCS chamber. After background subtraction, the LCS x-ray spectrum with the peak energy of 29.1+/-4.4|(stat)+/-2.1|(syst) keV and the peak width (rms) of 7.8+/-2.8|(stat)+/-0.4|(syst) keV is observed. Normally the 100 MeV linac operates with the electron macropulse charge of 1.0 nC/pulse, and the electron and laser collision repetition rate of 20 Hz. Therefore, the total LCS x-ray flux of (5.2+/-2.0) x 10(2) Hz can be achieved.