Position sensitive gaseous photomultipliers

In this paper a simple design of a gaseous photomultiplier, sensitive up to visible light, is described. It consists of a parallel plate chamber combined with a solid photocathode through a capillary plate, which works in a transmission mode and serves to suppress photon feedback. Ion feedback was minimized through the optimization of the gas mixture. A gain >103 was achieved. © 2001 Elsevier Science B.V. All rights reserved.