The AGILE silicon tracker: Pre-launch and in-flight configuration
Date Issued
2010
Author(s)
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Barbiellini, G.
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Basset, M.
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Chen, A.
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Di Cocco, G.
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Foggetta, L.
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Longo, F.
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Monzani, F.
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Nicolini, L.
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Pavesi, R.
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Pontoni, C.
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Prest, M.
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Pucella, G.
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Vallazza, E.
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Abstract
AGILE is an ASI (Italian Space Agency) Small Scientific Mission dedicated to high-energy astrophysics which was successfully launched on April 23, 2007. The AGILE instrument is composed of three main detectors: a Tungsten-Silicon Tracker designed to detect and image photons in the 30 MeV-50 GeV energy band, an X-ray imager called Super-AGILE operating in the 18-60 keV energy band, and a Mini-Calorimeter that detects gamma-rays and charged particles energy deposits between 300 keV and 100 MeV. The instrument is surrounded by an anti-coincidence (AC) system. In this paper, we present the noise characterization and the front-end configuration of the Silicon Tracker. Two crucial (and unique, among gamma-ray astrophysics missions) characteristic of the AGILE Silicon Tracker are the analog signal acquisition (aimed at obtaining an optimal angular resolution for gamma-ray imaging) and the very small dimension of the instrument (the total height including the active elements is ∼21 cm and therefore the Silicon Tracker is the lightest and most compact γ- ray imager sent in orbit). The results presented in this paper were obtained during the AIV (Assembly, Integration and Verification) pre-launch testing phase and during the post-launch commissioning phase. The AGILE Silicon Tracker has been optimally configured with a very good response of the frontend system and of the data acquisition units.
Volume
614
Issue
2
Start page
213
Issn Identifier
0168-9002
Ads BibCode
2010NIMPA.614..213B
Rights
open.access
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