Assessment of cadmium-zinc-telluride detectors for hard-X-ray astronomy

Author

Gaskin, Jessica A. ; Richardson, Georgia A. ; Mitchell, Shannon ; Sharma, Dharma P. ; Ramsey, Brian D. ; Seller, Paul

Author_Institution

Alabama Univ., Huntsville, AL, USA

Volume

5

fYear

2003

fDate

19-25 Oct. 2003

Firstpage

3404

Abstract

The detectors under study are precursors to those that will be used at the focal plane of the High Energy Replicated Optics (HERO) telescope currently being developed at the National Space Science and Technology Center and Marshall Space Flight Center. We discuss energy resolution across two 16x16 pixel arrays for 1-mm and 2-mm thick detectors that have a pixel pitch of 300 μm and inter-pixel gap of 50 μm. Additionally, we discuss 3D depth sensing, via the cathode to anode ratio, in a 2-mm thick 4x4 pixel array with pixel pitch of 750 μm and inter-pixel gap of 100 μm. In order to improve our simulations, we discuss electric field modeling for this detector geometry and the role this mapping will play in terms of charge sharing and charge loss in the detector.

Keywords

X-ray astronomy; anodes; cathodes; high energy physics instrumentation computing; semiconductor counters; 1 mm; 100 mum; 2 mm; 300 mum; 3D depth sensing; 50 mum; 750 mum; HERO telescope; High Energy Replicated Optics telescope; cadmium-zinc-telluride detectors; cathode-to-anode ratio; charge loss; charge sharing; detector geometry; electric field modeling; energy resolution; focal plane; hard-X-ray astronomy; interpixel gap; pixel pitch; simulations; Anodes; Astronomy; Cathodes; Detectors; Energy resolution; Optical sensors; Sensor arrays; Solid modeling; Space technology; Telescopes;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2003 IEEE

ISSN

1082-3654

Print_ISBN

0-7803-8257-9

Type

conf

DOI

10.1109/NSSMIC.2003.1352635

Filename

1352635