A large area SiPM array coupled to a LaBr3 crystal for a TPR spectrometer

Author

Fazzi, A. ; Nocente, M. ; Tardocchi, M. ; Varoli, V. ; Gorini, G. ; Lorenzoli, M. ; Pirovano, C. ; Valvo, G. ; Fallica, G. ; Cazzaniga, C.

Author_Institution

Dept. of Energy, Politec. di Milano, Milan, Italy

fYear

2013

fDate

Oct. 27 2013-Nov. 2 2013

Firstpage

1

Lastpage

4

Abstract

In A Thin film Proton Recoil spectrometer is being developed in view of ITER diagnostics. The recoil proton spectrometer consists of a thin LaBr₃ scintillating crystal (Ø 1" × 2.5 mm) coupled to an array of 12 Silicon Photomultipliers connected in parallel. The dependence of the energy resolution on the bias voltage and the geometrical efficiency of the SiPMs has been investigated illuminating with gamma sources a similar LaBr₃ crystal (Ø 1" × 1") coupled to two arrays of 5 and 12 elements, respectively. A resolution of less than 9% FWHM on the ¹³⁷Cs 662keV peak has been obtained with the 12 elements array. Measurements to assess the LaBr₃ light yield in response to protons have been performed and presented.

Keywords

elemental semiconductors; lanthanum compounds; particle spectrometers; photomultipliers; scintillation counters; silicon; thin film devices; ITER diagnostics; Si-LaBr₃; TPR spectrometer; electron volt energy 662 keV; gamma source; geometrical efficiency; large area SiPM array; scintillating crystal; silicon photomultiplier; thin film proton recoil spectrometer; Arrays; Crystals; Detectors; Energy resolution; Neutrons; Particle beams; Protons;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE

Conference_Location

Seoul

Print_ISBN

978-1-4799-0533-1

Type

conf

DOI

10.1109/NSSMIC.2013.6829683

Filename

6829683