title: Generation of first hard X-ray pulse at Tsinghua Thomson Scattering X-ray Source.
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.
authors.affiliation: Accelerator Laboratory, Department of Engineering Physics, Tsinghua University, Beijing 100084, China. dych@mail.tsinghua.edu.cn
authors.forename: Yingchao
authors.initials: Y
authors.lastname: Du
authors.forename: Lixin
authors.initials: L
authors.lastname: Yan
authors.forename: Jianfei
authors.initials: J
authors.lastname: Hua
authors.forename: Qiang
authors.initials: Q
authors.lastname: Du
authors.forename: Zhen
authors.initials: Z
authors.lastname: Zhang
authors.forename: Renkai
authors.initials: R
authors.lastname: Li
authors.forename: Houjun
authors.initials: H
authors.lastname: Qian
authors.forename: Wenhui
authors.initials: W
authors.lastname: Huang
authors.forename: Huaibi
authors.initials: H
authors.lastname: Chen
authors.forename: Chuanxiang
authors.initials: C
authors.lastname: Tang