Title :
Spatial characterization of a large-format, fine-pitch CdZnTe pixel detector for the HEFT balloon-borne experiment
Author :
Chen, C. M Hubert ; Cook, Walter R. ; Harrison, Fiona A. ; Lin, Jiao Y Y
Author_Institution :
California Inst. of Technol., Pasadena, CA, USA
Abstract :
We have developed a large-format CdZnTe pixel detector with custom, low-noise ASIC readout, for astrophysical applications. In particular, this detector is targeted for use in the High Energy Focusing Telescope (HEFT), a balloon-borne experiment with focusing optics for 20-70 keV. The detector is a 24×44 pixel array of 498-micrometre pitch. As a focal plane detector, uniformity from pixel to pixel is much desirable. In this paper, we present the spatial characterization of some detector properties for the 1056 pixels on the HEFT detector. These properties include electronic noise, leakage current, spectral resolution and count rate.
Keywords :
X-ray detection; application specific integrated circuits; circuit noise; readout electronics; semiconductor counters; 20 to 70 keV; 498 mum; HEFT balloon-borne experiment; High Energy Focusing Telescope balloon-borne experiment; astrophysical applications; count rate; electronic noise; focal plane detector; focusing optics; large-format fine-pitch CdZnTe pixel detector; leakage current; low-noise ASIC readout; pixel array; spatial characterization; spectral resolution; Anodes; Application specific integrated circuits; Bonding; Energy resolution; Radiation detector circuits; Sensor arrays; Space technology; Telescopes; X-ray detection; X-ray detectors;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2003 IEEE
Print_ISBN :
0-7803-8257-9
DOI :
10.1109/NSSMIC.2003.1352623
