A Novel Position-Sensitive Radiation Detector Using a Gaseous Photomultiplier and an UV Scintillator

Abstract

We developed a novel position-sensitive radiation detector that consists of an ultraviolet (UV) imaging gas photomultiplier and a UV scintillator. The former consists of a micro pixel gaseous chamber (PIC), two gas electron multipliers (GEMs), and a semitransparent CsI photocathode of diameter 34 mm deposited on a MgF 2 window. It was coupled to a LaF 3 (Nd) scintillator that emits UV light. We successfully conducted photon counting and imaging using this detector along with an alpha particle source.