Data di Pubblicazione:
2003
Abstract:
AGILE (Light Imager for Gamma-ray Astrophysics) is the first small scientific mission of ASI, the Italian Space Agency. It is a light (100 kg for the scientific instrument) satellite for the detection of gamma-ray sources in the energy range 30 MeV-50 GeV within a large field of view (1 of the sky). It is planned to be operational in the years 2003-2006, a period in which no other gamma-ray mission in the same energy range is foreseen.
AGILE is made of a silicon tungsten tracker, a CsI(Tl) minicalorimeter (1.5X(0)), an anticoincidence system of segmented plastic scintillators and a X-ray imaging detector sensitive in the 10-40 keV range. The tracker consists of 14 planes, each of them made of two layers of 16 single-sided, AC coupled, 410 mum thick, 9.5 x 9.5 cm(2) silicon detectors with a readout pitch of 242 mum and a floating strip. The readout ASIC is the TAA1, an analog-digital, low noise, self-triggering ASIC used in a very low power configuration (<400 μW/channel) with full analog readout. The trigger of the satellite is given by the tracker. The total number of readout channels is around 43 000.
We present a detailed description of the tracker, its trigger and readout logic, its assembly procedures and the prototype performance in several testbeam periods at the CERN PS.
AGILE is made of a silicon tungsten tracker, a CsI(Tl) minicalorimeter (1.5X(0)), an anticoincidence system of segmented plastic scintillators and a X-ray imaging detector sensitive in the 10-40 keV range. The tracker consists of 14 planes, each of them made of two layers of 16 single-sided, AC coupled, 410 mum thick, 9.5 x 9.5 cm(2) silicon detectors with a readout pitch of 242 mum and a floating strip. The readout ASIC is the TAA1, an analog-digital, low noise, self-triggering ASIC used in a very low power configuration (<400 μW/channel) with full analog readout. The trigger of the satellite is given by the tracker. The total number of readout channels is around 43 000.
We present a detailed description of the tracker, its trigger and readout logic, its assembly procedures and the prototype performance in several testbeam periods at the CERN PS.
Tipologia CRIS:
Articolo su Rivista
Keywords:
AGILE; silicon tungsten tracker; gamma-ray imaging
Elenco autori:
Prest, Michela; Barbiellini, G.; Bordignon, G.; Fedel, G.; Liello, F.; Longo, F.; Pontoni, C.; Vallazza, E.
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