Experimental investigation of silicon photomultipliers as compact light readout systems for gamma-ray spectroscopy applications in fusion plasmas

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4886755· OSTI ID:22308633

Gorini, G. ^[1]; Fazzi, A.; Lorenzoli, M.; Pirovano, C. ^[2]; Tardocchi, M. ^[3]; Cazzaniga, C.; Rebai, M. ^[1]; Uboldi, C.; Varoli, V. ^[2]

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1. Dipartimento di Fisica “G. Occhialini,” Università degli Studi di Milano-Bicocca, Milano (Italy)
2. Dipartimento di Energia, CeSNEF, Politecnico di Milano, Milano (Italy)
3. Istituto di Fisica del Plasma “P. Caldirola,” EURATOM-ENEA-CNR Association, Milano (Italy)

A matrix of Silicon Photo Multipliers has been developed for light readout from a large area 1 in. × 1 in. LaBr{sub 3} crystal. The system has been characterized in the laboratory and its performance compared to that of a conventional photo multiplier tube. A pulse duration of 100 ns was achieved, which opens up to spectroscopy applications at high counting rates. The energy resolution measured using radioactive sources extrapolates to 3%–4% in the energy range E{sub γ} = 3–5 MeV, enabling gamma-ray spectroscopy measurements at good energy resolution. The results reported here are of relevance in view of the development of compact gamma-ray detectors with spectroscopy capabilities, such as an enhanced gamma-ray camera for high power fusion plasmas, where the use of photomultiplier is impeded by space limitation and sensitivity to magnetic fields.

• OSTI ID: 22308633
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 11; Other Information: (c) 2014 Euratom; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COUNTING RATES
CRYSTALS
ENERGY RESOLUTION
EXPERIMENTAL DATA
GAMMA CAMERAS
GAMMA SPECTROSCOPY
LANTHANUM BROMIDES
MAGNETIC FIELDS
MEV RANGE
PHOTOMULTIPLIERS
PLASMA
PULSES
RADIATION SOURCES
READOUT SYSTEMS
SILICON
VISIBLE RADIATION