Calorimeter prototype based on silicon drift detectors coupled to scintillators for Compton telescopes application

Details Calorimeter prototype based on silicon drift detectors coupled to scintillators for Compton telescopes application Calorimeter prototype based on silicon drift detectors coupled to scintillators for Compton telescopes application

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004newar..48..305m&link_type=abstract

New Astronomy Reviews, Volume 48, Issue 1-4, p. 305-308.

Astronomy and Astrophysics

Astronomy

Silicon Drift Detectors, Compton Telescopes

Scientific paper

The project of a new calorimeter module for Compton telescopes based on an array of silicon drift detectors (SDD) coupled to thallium activated cesium iodide (CsI(Tl)) scintillating crystals is presented. Because of their low output capacitance and the possibility to have the first amplifying stage directly integrated on chip, SDDs show better noise performances than traditional p-intrinsic-n (PIN) photodiodes. For this reason, SDDs coupled to scintillators show a higher energy resolution than similar systems based on PIN photodiodes. The detectors will be integrated in an array with read-out based on custom made ASIC's built to match with the SDDs electrical properties. Shaped signals are digitally converted by a Digital Front-End Electronic Board which also takes care of ASICs handshaking. The system architecture is based on the PICsIT instrument on board the INTEGRAL satellite, at present fully operative. In this paper an overview of the instrument will be given and the status of the project will be reported.

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