1. ISGRI: The INTEGRAL Soft Gamma-Ray Imager
- Author
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M. Arques, Andre Bouere, Francois Lebrun, H. Dzitko, P. Lavocat, J Crétolle, Olivier Limousin, T. Tourette, V. Mauguen, B. Horeau, T. Chaleil, Philippe Laurent, F. Daly, E. Poindron, M. Rouger, F. Desages, Christophe Cara, F. Mathy, A. Sauvageon, F. Molinie, C. Blondel, F. Meignier, C. Bonnin, J. P. Leray, Département d'Astrophysique (ex SAP) (DAP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Département d'Ingénierie des Systèmes (ex SIS) (DIS), and Département d'Electronique, des Détecteurs et d'Informatique pour la Physique (ex SEDI) (DEDIP)
- Subjects
Space Telescope ,X-ray transient ,High-energy astronomy ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Astrophysics ,01 natural sciences ,law.invention ,[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] ,Telescope ,law ,0103 physical sciences ,Cadmium Telluride Detectors ,010303 astronomy & astrophysics ,Image resolution ,Physics ,INTEGRAL ,010308 nuclear & particles physics ,Astrophysics (astro-ph) ,Resolution (electron density) ,Astrophysics::Instrumentation and Methods for Astrophysics ,Gamma ray ,Astronomy and Astrophysics ,IBIS ,Space and Planetary Science ,Calibration ,Orbit (dynamics) ,Satellite ,Gamma-ray Astronomy - Abstract
For the first time in the history of high energy astronomy, a large CdTe gamma-ray camera is operating in space. ISGRI is the low-energy camera of the IBIS telescope on board the INTEGRAL satellite. This paper details its design and its in-flight behavior and performances. Having a sensitive area of 2621 cm$^2$ with a spatial resolution of 4.6 mm, a low threshold around 12 keV and an energy resolution of $\sim$ 8% at 60 keV, ISGRI shows absolutely no signs of degradation after 9 months in orbit. All aspects of its in-flight behavior and scientific performance are fully nominal, and in particular the observed background level confirms the expected sensitivity of 1 milliCrab for a 10$^6$s observation., Comment: INTEGRAL A&A special issue
- Published
- 2003