We report progress in our study of cadmium zinc telluride (CZT) strip detectors featuring orthogonal coplanar anode contacts. We specifically report on the performance, characterization and stability of 5 and 10 mm thick prototype CZT detectors fabricated using material from several manufacturers. Our ongoing work includes laboratory and simulation studies aimed at optimizing and developing compact, efficient, high performance detector modules for 0.05 to 1 MeV gamma radiation measurements with space-based instrumentation. The coplanar anode strip configuration retains many of the performance advantages of pixel detectors yet requires far fewer electronic channels to perform both 3-d imaging and spectroscopy. Minimizing the channel count is important for large balloon or space instruments including coded aperture telescopes (such as MARGIE or EXIST) and Compton imaging telescopes (such as TIGRE or ACT). We also present plans for developing compact, space qualified imaging modules designed for integration into closely packed large area detector arrays. We discuss issues associated with detector module and array electronics design and development.
Space Science Center, Physics
Digital Object Identifier (DOI)
James M. Ryan ; B. Donmez ; John R. Macri ; Mickel McClish ; Mark L. McConnell ; Richard S. Miller ; Mark Widholm ; Louis-Andre Hamel and Manuel Julien "Development of CZT strip detector modules for 0.05- to 1-MeV gamma-ray imaging and spectroscopy", Proc. SPIE 4851, X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy, 885 (March 10, 2003); doi:10.1117/12.461420; http://dx.doi.org/10.1117/12.461420
© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering.