Physics
Scientific paper
Jan 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5198....9c&link_type=abstract
Hard X-Ray and Gamma-Ray Detector Physics V. Edited by Franks, Larry A.; Burger, Arnold; James, Ralph B.; Hink, Paul L. Proc
Physics
2
Scientific paper
We have developed large format CdZnTe pixel detectors optimized for astrophysical applications. The detectors, designed for the High Energy Focusing Telescope (HEFT) balloon experiment, each consists of an array of 24x44 pixels, on a 498 μm pitch. Each of the anode segments on a CdZnTe sensor is bonded to a custom, low-noise application-specific integrated circuit (ASIC)optimized to achieve low threshold and good energy resolution. We have studied detectors fabricated by two different bonding methods and corresponding anode plane designs---the first detector has a steering electrode grid, and is bonded to the ASIC with indium bumps; the second detector has no grid but a narrower gap between anode contacts, and is bonded to the ASIC with conductive epoxy bumps and gold stud bumps in series. In this paper, we present results from detailed X-ray testing of the HEFT pixel detectors. This includes measurements of the energy resolution for both single-pixel and split-pixel events, and characterization of the effects of charge trapping, electrode biases and temperature on the spectral performance. Detectors from the two bonding methods are contrasted.
Cook Walter R.
Harrison Fiona A.
Hubert Chen C. M.
Lin Jiao Y. Y.
Mao Peter H.
No associations
LandOfFree
Characterization of the HEFT CdZnTe pixel detectors 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 Characterization of the HEFT CdZnTe pixel detectors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characterization of the HEFT CdZnTe pixel detectors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-829215