Title :
CZT strip detectors for imaging and spectroscopy: collimated beam and ASIC readout experiments
Author :
Kurczynski, P. ; Krizmanic, J.F. ; Stahle, C.M. ; Parsons, A. ; Palmer, D.M. ; Barbier, L.M. ; Bartlett, L.M. ; Barthelmy, S.D. ; Birsa, F. ; Gehrels, N. ; Odom, J. ; Hanchak, C. ; Shu, P. ; Teegarden, B.J. ; Tueller, J.
Author_Institution :
Dept. of Phys., Maryland Univ., College Park, MD, USA
fDate :
6/1/1997 12:00:00 AM
Abstract :
We report the status of ongoing investigations into cadmium zinc telluride (CZT) strip detectors for application in hard X-ray astronomy. We have instrumented a nine strip by nine strip region of a two sided strip detector made in our detector fabrication facility. In order to measure the position resolution of our detectors, we have implemented a collimated beam that concentrates radiation to a spot size less than 50 μm. We have placed a 30 μm upper limit on the width of the point spread function for this system. We have also performed charge collection studies as a function of incident photon energy and bias voltage with a single sided, 100 μm pitch CZT strip detector wire bonded to an SVX ASIC charge amplifier. The detectors exhibited excellent strip uniformity in terms of photon count rate and spectroscopic information
Keywords :
II-VI semiconductors; X-ray astronomy; X-ray detection; X-ray imaging; X-ray spectrometers; X-ray spectroscopy; application specific integrated circuits; astronomical instruments; cadmium compounds; detector circuits; nuclear electronics; position sensitive particle detectors; semiconductor counters; zinc compounds; ASIC readout experiments; CdZnTe; CdZnTe strip detectors; SVX ASIC charge amplifier; X-ray imaging; X-ray spectroscopy; charge collection; collimated beam; hard X-ray astronomy; photon count rate; point spread function width; position resolution; strip uniformity; two sided strip detector; upper limit; Astronomy; Cadmium compounds; Collimators; Optical imaging; Spectroscopy; Strips; X-ray detection; X-ray detectors; X-ray imaging; Zinc compounds;
Journal_Title :
Nuclear Science, IEEE Transactions on
