A study of 8 GeV mono-energetic photon beam production

该项目旨在通过反射同步辐射X射线使SPring-8储存环中循环的8 GeV电子发生康普顿后向散射，从而使高能单能光子束成为可能。首先要做的是将同步辐射X射线反射180度。其次，反射的X射线必须被控制，以与环中循环的8 GeV电子进行正面碰撞。最后，我们将能够观察到由8 GeV电子的反射X射线的康普顿后向散射产生的高能单能光子。我们仍然处于第一阶段。在本项目中，我们成功地测量了180度反射的9.1 keV的同步辐射X射线，采用Si（008）布拉格反射器。

This project aims at making a high energy mono-energetic photon beam possible by reflecting synchrotron radiation X-ray to have Compton backward scattering from circulating 8 GeV electrons in the SPring-8 storage ring. The first thing to do is to reflect synchrotron radiation X-ray by 180 degrees. Second, the reflected X-ray has to be controlled to give a head-on collision with 8 GeV electrons circulating in the ring. Then finally, we will be able to observe high energy mono-energetic photons produced by means of Compton backward scattering of the reflected X-ray from the 8 GeV electrons.It takes more time to attain the final goal. And we are still at the first stage. In the present project we succeeded in measuring 180-degree reflected 9.1 keV X-ray of synchrotron radiation, employing a Si(008) Bragg reflector.