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

Volume

51

Issue

5

fYear

2004

Firstpage

2472

Lastpage

2477

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-μm pitch. As a focal plane detector, uniformity from pixel to pixel is very desirable. In this paper, we present the 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 astronomy; X-ray detection; application specific integrated circuits; astronomical telescopes; leakage currents; nuclear electronics; position sensitive particle detectors; readout electronics; semiconductor counters; 1056 pixel; 24 pixel; 44 pixel; CdZnTe radiation detector; HEFT balloon-borne experiment; X-ray astronomy detectors; astrophysical application; count rate uniformity; detector properties; electronic noise; focal plane detector; focusing optics; high-energy focusing telescope; large-format fine-pitch CdZnTe pixel detector; leakage current; low-noise ASIC readout; pixel array detector; radiation detector circuits; spectral resolution; Application specific integrated circuits; Circuit noise; Energy resolution; Pixel; Radiation detector circuits; Sensor arrays; Space technology; Telescopes; X-ray detection; X-ray detectors; CdZnTe radiation detectors; X-ray astronomy detectors; radiation detector circuits;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2004.836143

Filename

1344356