&lt;title&gt;ISGRI: a CdTe array imager for INTEGRAL&lt;/title&gt;

Lebrun, F.; Blondel, C.; Fondeur, Irene; Goldwurm, A.; Laurent, P.; Leray, J. P.

doi:10.1117/12.253985

Cited by 19 publications

(14 citation statements)

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“…With regard to the spectral performance, the lot has been found very homogeneous. Degradation of the spectroscopic performance of the detectors under proton irradiation has been evaluated with accelerator tests (Lebrun et al 1996) and found not to be a concern in the context of the INTEGRAL mission.…”

Section: Instrument Designmentioning

confidence: 99%

ISGRI: The INTEGRAL Soft Gamma-Ray Imager

Lebrun

Leray

Lavocat

et al. 2003

A&A

768

631

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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 ∼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.

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Section: Instrument Designmentioning

confidence: 99%

ISGRI: The INTEGRAL Soft Gamma-Ray Imager

Lebrun

Leray

Lavocat

et al. 2003

A&A

768

631

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“…A steady decrease of 2.6 % per year is apparent in figure 4 together with a sharp drop of ~ 0.7 % due to the November 2003 giant solar flare. This observed behavior is fully consistent with the pre-launch accelerator tests using proton irradiation of CdTe detectors [3]. Secondary neutrons may also play a role.…”

Section: ) Gain Evolutionsupporting

confidence: 77%

“…Fortunately, this spectrum (see Fig. 6) and the resulting count rates are close to the expectations [3,20]. …”

Section: ) In Flight Background Spectrummentioning

confidence: 69%

“…The other is the internal gammaray background induced by the spallation reactions in CdTe. Accelerator tests with protons of various energies have shown convincingly that CdTe can sustain relatively high doses provided the dose rate is small, as expected in space [3]. While the contribution of the cosmic diffuse gamma-ray background to the ISGRI count rate was relatively easy to estimate, the internal background contribution was more uncertain.…”

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confidence: 94%

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The ISGRI CdTe gamma camera in-flight behavior

Lebrun

IEEE Symposium Conference Record Nuclear Science 2004.

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“…CZT detectors have been the subject of great attention from the scientific community interested in applications in X-and γ-rays, particularly for the realisation of spectroscopic imagers for exploration of the universe 4,5,6 . The present work is inserted in this international contest being oriented to the development of an innovative concept of 3D position sensitive spectrometers that could be very suitable for application focal plane for a Laue lens telescope for future hard X and soft gamma ray mission.…”

Section: Introductionmentioning

confidence: 99%

Development of a 3D CZT detector prototype for Laue Lens telescope

et al. 2010

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We report on the development of a 3D position sensitive prototype suitable as focal plane detector for Laue lens telescope. The basic sensitive unit is a drift strip detector based on a CZT crystal, (~19×8 mm 2 area, 2.4 mm thick), irradiated transversally to the electric field direction. The anode side is segmented in 64 strips, that divide the crystal in 8 independent sensor (pixel), each composed by one collecting strip and 7 (one in common) adjacent drift strips. The drift strips are biased by a voltage divider, whereas the anode strips are held at ground. Furthermore, the cathode is divided in 4 horizontal strips for the reconstruction of the third interaction position coordinate. The 3D prototype will be made by packing 8 linear modules, each composed by one basic sensitive unit, bonded on a ceramic layer. The linear modules readout is provided by a custom front end electronics implementing a set of three RENA-3 for a total of 128 channels. The front-end electronics and the operating logics (in particular coincidence logics for polarisation measurements) are handled by a versatile and modular multi-parametric back end electronics developed using FPGA technology.

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<title>ISGRI: a CdTe array imager for INTEGRAL</title>

Cited by 19 publications

References 0 publications

ISGRI: The INTEGRAL Soft Gamma-Ray Imager

ISGRI: The INTEGRAL Soft Gamma-Ray Imager

The ISGRI CdTe gamma camera in-flight behavior

Development of a 3D CZT detector prototype for Laue Lens telescope

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