Synthetic diamond-based position-sensitive photoconductive detector development for the Advanced Photon Source

A novel x-ray beam position detection device that we call a position sensitive photoconductive detector (PSPCD) is designed to have synthetic diamond as its substrate material. We proved that it is feasible to use synthetic diamond to make a hard x-ray position sensitive detector based on the photoconductivity principle and that acts as a solid state ion chamber. Experiments on different PSPCD samples using synthetic diamond with high heat flux white undulatory beam, as well as with monochromatic hard x-ray beams, have been done at the Advanced Photon Source. Recent test results with the PSPCD in quadrant configuration as an x-ray beam position monitor and in a multipixel array as an x-ray beam profile are presented in this paper