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Detector characterization and first coincidence tests of a Compton telescope based on LaBr3 crystals and SiPMs
Llosá G., Barrio J., Cabello J., Crespo A., Lacasta C. et al
Dans Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - 6th International Conference on New Developments in Photodetection (NDIP 2011), Lyon : France (2011) - http://hal.in2p3.fr/in2p3-00649715
Physique/Physique/Instrumentations et Détecteurs
Sciences de l'ingénieur/Micro et nanotechnologies/Microélectronique
Detector characterization and first coincidence tests of a Compton telescope based on LaBr3 crystals and SiPMs
G. Llosá1, J. Barrio1, J. Cabello1, A. Crespo1, C. Lacasta1, M. Rafecas1, S. Callier2, C. De La Taille2, L. Raux2
1 :  IFIC - Instituto de Fisica Corpuscular
http://ific.uv.es/
Consejo Superior de Investigaciones Científicas - CSIC (SPAIN) – Universidad de Valencia
Edificio Institutos de Investigación Apartado de Correos 22085 46071 Valencia
Espagne
2 :  LAL - Laboratoire de l'Accélérateur Linéaire
http://www.lal.in2p3.fr/
CNRS : UMR8607 – IN2P3 – Université Paris XI - Paris Sud
Centre Scientifique d'Orsay B.P. 34 91898 ORSAY Cedex
France
Omega
A Compton telescope for dose monitoring in hadron therapy consisting of several layers of continuous LaBr3 crystals coupled to silicon photomultiplier (SiPM) arrays is under development within the ENVISION project. In order to test the possibility of employing such detectors for the telescope, a detector head consisting of a continuous 16 mm×18 mm×5 mm LaBr3 crystal coupled to a SiPM array has been assembled and characterized, employing the SPIROC1 ASIC as readout electronics. The best energy resolution obtained at 511 keV is 6.5% FWHM and the timing resolution is 3.1 ns FWHM. A position determination method for continuous crystals is being tested, with promising results. In addition, the detector has been operated in time coincidence with a second detector layer, to determine the coincidence capabilities of the system. The first tests are satisfactory, and encourage the development of larger detectors that will compose the telescope prototype.

Communications avec actes
2012
07/2011
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
internationale
695
105-108
Elsevier

6th International Conference on New Developments in Photodetection (NDIP 2011)
Lyon
France
04/07/2011
08/07/2011
G. Llosa

LAL/RT 11-24
Hadron therapy – Compton imaging – LaBr3 – Continuous crystal – SiPM – MPPC – G-APD