Oswald H.W. Siegmund (Space Sciences Laboratory, U.C. Berkeley), John V. Vallerga (Space Sciences Laboratory, U.C. Berkeley), Jason McPhate (Space Sciences Laboratory, U.C. Berkeley), Barry Welsh (Space Sciences Laboratory, U.C. Berkeley), Anton Tremsin (Space Sciences Laboratory, U.C. Berkeley)
Keywords: Imaging, microchannel Plate, photocathode, photon counting
Abstract:
Detectors with cross strip anodes have been used in open face and sealed tube detectors for detection of particles and light. In combination with high resolution position encoding electronics these have the capability of being able to independently record the accurate time and position of each detected photon event. Sealed tube (18 mm) microchannel plate cross strip anode detectors with supergen-II photocathodes, and open face cross strip anode detectors up to 40mm have been commissioned. These have high spatial resolution (d” 30 m), are capable of high counting rates (input rates > 5 MHz), demonstrate time tagging of events with ~1.5 ns accuracy, and provide extended lifetimes. Related developments of high efficiency GaN photocathodes and novel MCP structures capable of providing 20 x 20 cm devices potentially enhance the applicability of these devices.
Date of Conference: September 14-17, 2010
Track: Posters