X-ray Pinhole Camera in the Diagnostics Beamlime BL7B at PLS-II

Abstract

The beam diagnostics beamline BL7B using synchrotron radiation with 8.6 keV critical photon energy from bending magnet has been used to measure the electron-beam size and photon-beam profile on real-time basis. After the completion of the PLS-II, the Compound Refractive Lens (CRL) system was implemented in the optical hutch at BL7B to measure the electron-beam size from X-ray imaging. But we could not have a good image due to short available optical path caused by limited space of the optical hutch. To solve this problem a pinhole camera is implemented in the front-end of BL7B in return for the beamline extension. The progresses on the new x-ray imaging system are introduced in this paper.