1. Calorimeter prototype based on silicon drift detectors coupled to scintillators for Compton telescopes application
- Author
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Martino Marisaldi, G. Di Cocco, Claudio Labanti, Elena M. Rossi, Andrea Bulgarelli, M. Trifoglio, A. Mauri, Alessandro Traci, E. Celesti, and Fulvio Gianotti
- Subjects
Physics ,Calorimeter (particle physics) ,Physics::Instrumentation and Detectors ,business.industry ,Detector ,Photodetector ,Astronomy and Astrophysics ,Scintillator ,Noise (electronics) ,Capacitance ,Photodiode ,law.invention ,Optics ,Application-specific integrated circuit ,Space and Planetary Science ,law ,business - Abstract
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.
- Published
- 2004