A CdTe gamma-camera for the space observatory INTEGRAL: Software charge-loss corrections

被引：14

作者：

Lebrun, F ^{[1
]}

Leray, JP ^{[1
]}

Laurent, P ^{[1
]}

DeAntoni, P ^{[1
]}

Blondel, C ^{[1
]}

机构：

[1] CENS,CEA,DSM,DAPNIA,SERV INSTRUMENTAT GEN,F-91191 GIF SUR YVETTE,FRANCE

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1996年 / 380卷 / 1-2期

关键词：

D O I：

10.1016/S0168-9002(96)00315-4

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The IMAGER gamma-ray telescope on board INTEGRAL features a coded aperture and a two-layer detector. The first of these layers, ISGRI, is a 16 384 pixel CdTe gamma-camera which will operate in the 20 keV-1 MeV energy range. The spectral performances of ISGRI at energies greater than 50 keV are obtained using a software charge-loss correction based on pulse rise-time measurements. At high energy, the study of the Compton interactions between the two IMAGER layers should ensure a good background rejection. This device will provide unprecedented performances in this energy range: a spatial resolution of 4 mm, a spectral resolution better than 7% at 122 keV and a broad band sensitivity at 30. of about 10(-6) cm(-2) s(-1) keV(-1) at 100 keV for a 10(5) s observation. Galactic X-ray binary sources, supernovae and active galactic nuclei will be prime targets for ISGRI.

引用

页码：414 / 418

页数：5

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