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Proceedings Paper

Line profile modelling for multi-pixel CZT detectors
Author(s): T. Chattopadhyay; S. V. Vadawale; A. R. Rao; D. Bhattacharya; Mithun N. P. S.; V. Bhalerao
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Paper Abstract

Cadmium Zinc Telluride (CZT) detectors have been the mainstay for hard X-ray astronomy for its high quantum efficiency, fine energy resolution, near room temperature operation, and radiation hardness. In order to fully utilize the spectroscopic capabilities of CZT detectors, it is important to generate accurate response matrix, which in turn requires precise modelling of the line profiles for the CZT detectors. We have developed a numerical model taking into account the mobility and lifetime of the charge carriers and intrpixel charge sharing for the CZT detectors. This paper describes the details of the modelling along with the experimental measurements of mobility, lifetime and charge sharing fractions for the CZT detector modules of thickness of 5 mm and 2.5 mm pixel size procured from Orbotech Medical Solutions (same modules used in AstroSat-CZTI).

Paper Details

Date Published: 18 July 2016
PDF: 9 pages
Proc. SPIE 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 99054D (18 July 2016); doi: 10.1117/12.2234805
Show Author Affiliations
T. Chattopadhyay, Physical Research Lab. (India)
S. V. Vadawale, Physical Research Lab. (India)
A. R. Rao, Tata Institute of Fundamental Research (India)
D. Bhattacharya, The Inter-Univ. Ctr. for Astronomy and Astrophysics (India)
Mithun N. P. S., Physical Research Lab. (India)
V. Bhalerao, The Inter-Univ. Ctr. for Astronomy and Astrophysics (India)

Published in SPIE Proceedings Vol. 9905:
Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Tadayuki Takahashi; Marshall Bautz, Editor(s)

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