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Proceedings Paper

CdZnTe detector for hard x-ray and low energy gamma-ray focusing telescope
Author(s): L. Natalucci; J. M. Alvarez; N. Barriere; E. Caroli; R. M. Curado da Silva; S. Del Sordo; S. Di Cosimo; M. Frutti; M. Hernanz; M. Lozano; E. Quadrini; G. Pellegrini; J. B. Stephen; P. Ubertini; M. C. Uslenghi; A. Zoglauer
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Paper Abstract

The science drivers for a new generation soft gamma-ray mission are naturally focused on the detailed study of the acceleration mechanisms in a variety of cosmic sources. Through the development of high energy optics in the energy energy range 0.05-1 MeV it will be possible to achieve a sensitivity about two orders of magnitude better than the currently operating gamma-ray telescopes. This will open a window for deep studies of many classes of sources: from Galactic X-ray binaries to magnetars, from supernova remnants to Galaxy clusters, from AGNs (Seyfert, blazars, QSO) to the determination of the origin of the hard X-/gamma-ray cosmic background, from the study of antimatter to that of the dark matter. In order to achieve the needed performance, a detector with mm spatial resolution and very high peak efficiency is needed. The instrumental characteristics of this device could eventually allow to detect polarization in a number of objects including pulsars, GRBs and bright AGNs. In this work we focus on the characteristics of the focal plane detector, based on CZT or CdTe semiconductor sensors arranged in multiple planes and viewed by a side detector to enhance gamma-ray absorption in the Compton regime. We report the preliminary results of an optimization study based on simulations and laboratory tests, as prosecution of the former design studies of the GRI mission which constitute the heritage of this activity.

Paper Details

Date Published: 15 July 2008
PDF: 10 pages
Proc. SPIE 7011, Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray, 70111S (15 July 2008); doi: 10.1117/12.789201
Show Author Affiliations
L. Natalucci, INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica (Italy)
J. M. Alvarez, CSIC-Institut de Ciencies de l'Espai (Spain)
N. Barriere, INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica (Italy)
E. Caroli, INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica (Italy)
R. M. Curado da Silva, Univ. de Coimbra (Portugal)
S. Del Sordo, INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica (Italy)
S. Di Cosimo, INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica (Italy)
M. Frutti, INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica (Italy)
M. Hernanz, CSIC-Institut de Ciencies de l'Espai (Spain)
M. Lozano, Ctr. Nacional de Microelectronica (Spain)
E. Quadrini, INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica (Italy)
G. Pellegrini, Ctr. Nacional de Microelectronica (Spain)
J. B. Stephen, INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica (Italy)
P. Ubertini, INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica (Italy)
M. C. Uslenghi, INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica (Italy)
A. Zoglauer, Space Sciences Lab., Univ. of California, Berkeley (United States)


Published in SPIE Proceedings Vol. 7011:
Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray
Martin J. L. Turner; Kathryn A. Flanagan, Editor(s)

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