Multistep parallel plate avalanche chamber as a 2D imager for MeV pulsed radiography

摘要

Abstract: In this paper, we present the experimental validation of the wide signal measurement range of a high sensitivity gateable camera based on a multi step parallel plate avalanche chamber (MSPPAC) for MeV pulsed radiography applications. The MSPPAC was tested with a metallic converter. Thus, we have demonstrated that the MSPPAC is a potentially high- performance imager, even for the high hard x-ray dose rates used in radiography and radiotherapy. !2