Optimization of <= 200 um pitch CZT detectors for future high-resolution X-ray instrumentation in astrophysics
| Autor: | Zajczyk, Anna, Draper, Marie, Dowkontt, Paul, Guo, Qingzhen, Kislat, Fabian, Krawczynski, Henric, De Geronimo, Gianluigi, Li, Shaorui, Beilicke, Matthias |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Proceedings of the SPIE, Volume 9213, id. 921308 10 pp. (2014) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1117/12.2062372 |
| Popis: | Cadmium Zinc Telluride and Cadmium Telluride are the detector materials of choice for the detection of X-rays in the X-ray energy band E >= 5keV with excellent spatial and spectral resolution and without cryogenic cooling. Owing to recent breakthroughs in grazing incidence mirror technology, next-generation hard X-ray telescopes will achieve angular resolution between 5 and 10 arc seconds - about an order of magnitude better than that of the NuSTAR hard X-ray telescope. As a consequence, the next generation of X-ray telescopes will require pixelated X-ray detectors with pixels on a grid with a lattice constant of <= 250um. Additional detector requirements include a low energy threshold of less than 5keV and an energy resolution of less than one keV. The science drivers for a high angular-resolution X-ray mission include studies and measurements of black hole spins, the cosmic evolution of super-massive black holes, active galactic nuclei feedback, and the behaviour of matter at very high densities. In this contribution, we report on our R&D studies with the goal to optimise small-pixel Cadmium Zinc Telluride and Cadmium Telluride detectors. Comment: 10 pages, 16 figures; Proceedings of the SPIE 2014 |
| Databáze: | arXiv |
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