Generation of first hard X-ray pulse at Tsinghua Thomson Scattering X-ray Source

Yingchao Du; Lixin Yan; Jianfei Hua; Qiang Du; Zhen Zhang; Renkai Li; Houjun Qian; Wenhui Huang; Huaibi Chen; Chuanxiang Tang

doi:10.1063/1.4803671

Generation of first hard X-ray pulse at Tsinghua Thomson Scattering X-ray Source

Rev Sci Instrum. 2013 May;84(5):053301. doi: 10.1063/1.4803671.

Authors

Yingchao Du¹, Lixin Yan, Jianfei Hua, Qiang Du, Zhen Zhang, Renkai Li, Houjun Qian, Wenhui Huang, Huaibi Chen, Chuanxiang Tang

Affiliation

¹ Accelerator Laboratory, Department of Engineering Physics, Tsinghua University, Beijing 100084, China. dych@mail.tsinghua.edu.cn

PMID: 23742539
DOI: 10.1063/1.4803671

Abstract

Tsinghua Thomson Scattering X-ray Source (TTX) is the first-of-its-kind dedicated hard X-ray source in China based on the Thomson scattering between a terawatt ultrashort laser and relativistic electron beams. In this paper, we report the experimental generation and characterization of the first hard X-ray pulses (51.7 keV) via head-on collision of an 800 nm laser and 46.7 MeV electron beams. The measured yield is 1.0 × 10(6) per pulse with an electron bunch charge of 200 pC and laser pulse energy of 300 mJ. The angular intensity distribution and energy spectra of the X-ray pulse are measured with an electron-multiplying charge-coupled device using a CsI scintillator and silicon attenuators. These measurements agree well with theoretical and simulation predictions. An imaging test using the X-ray pulse at the TTX is also presented.