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

Authors :: 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.
Source :: Nuclear Instruments & Methods in Physics Research Section A. May2011 Supplement, Vol. 637 Issue 1, pS141-S144. 0p.
Publication Year :: 2011
Abstract: Abstract: 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 keV. The X-ray source consists of a 150-MeV electron beam, with a pulse duration of 10ps (rms), accelerated by a Microtron accelerator and an Nd:YAG laser, with a pulse duration of 10ns (FWHM). In the first trial experiment, the X-ray flux is estimated to be (2.2±1.0)×102 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. [Copyright &y& Elsevier]