Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-09-03
Astronomy and Astrophysics
Astrophysics
To appears in the SPIE 2004 proceedings (5540: Hard X-ray and gamma-ray detector physics V)
Scientific paper
10.1117/12.559748
We report our in-depth study of Cd-Zn-Te (CZT) crystals to determine an optimum pixel and guard band configuration for Hard X-ray imaging and spectroscopy. We tested 20x20x5mm crystals with 8x8 pixels on a 2.46mm pitch. We have studied different types of cathode / anode contacts and different pixel pad sizes. We present the measurements of leakage current as well as spectral response for each pixel. Our I-V measurement setup is custom designed to allow automated measurements of the I-V curves sequentially for all 64 pixels, whereas the radiation properties measurement setup allows for interchangeable crystals with the same XAIM3.2 ASIC readout from IDEAS. We have tested multiple crystals of each type, and each crystal in different positions to measure the variation between individual crystals and variation among the ASIC channels. We also compare the same crystals with and without a grounded guard band deposited on the crystal side walls vs. a floating guard band and compare results to simulations. This study was carried out to find the optimum CZT crystal configuration for prototype detectors for the proposed Black-Hole Finder mission, EXIST.
Bellm Eric
Craig Walter
Grindlay Jonathan
Hong Jongbae
Narita Taku
No associations
LandOfFree
Multipixel characterization of imaging CZT detectors for hard X-ray imaging and spectroscopy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Multipixel characterization of imaging CZT detectors for hard X-ray imaging and spectroscopy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multipixel characterization of imaging CZT detectors for hard X-ray imaging and spectroscopy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-528846