Development of a sub-MeV X-ray source via Compton backscattering

作者：Kawase K^*; Kando M; Hayakawa T; Daito I; Kondo S; Homma T; Kameshima T; Kotaki H; Chen L M; Fukuda Y; Faenov A; Shizuma T; Shimomura T; Yoshida H; Hajima R; Fujiwara M; Bulanov S V; Kimura T; Tajima T

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2011, 637: S141-S144.

DOI：10.1016/j.nima.2010.02.042

• Sub-MeV X-ray
• Compton backscattering
• Stimulated Brillouin scattering
• Laser pulse compression

At the Kansai Photon Science Institute of the Japan Atomic Energy Agency, we have developed a Compton backscattered X-ray source in the energy region of a few hundred key. The X-ray source consists of a 150-MeV electron beam, with a pulse duration of 10 ps (rms), accelerated by a Microtron accelerator and an Nd:YAG laser, with a pulse duration of 10 ns (FWHM). In the first trial experiment, the X-ray flux is estimated to be (2.2 +/- 1.0) x 10(2) photons/pulse. For the actual application of an X-ray source, it is important to increase the generated X-ray flux as much as possible. Thus, for the purpose of increasing the X-ray flux, we have developed the pulse compression system for the Nd:YAG laser via stimulated Brillouin scattering (SBS). The SBS pulse compression has the great advantages of a high conversion efficiency and a simple structure. In this article, we review the present status of the Compton backscattered X-ray source and describe the SBS pulse compression system.

• 出版日期2011-5-1