Performance of the prototype LaBr{sub 3} spectrometer developed for the JET gamma-ray camera upgrade

Journal Article · Tue Nov 15 00:00:00 EST 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4961060· OSTI ID:22596475

Nocente, M.; Gorini, G. ^[1]; Muraro, A.; Giacomelli, L.; Cippo, E. P.; Tardocchi, M. ^[2]; Perseo, V. ^[1]; Boltruczyk, G.; Gosk, M.; Korolczuk, S.; Mianowski, S.; Zychor, I. ^[3]; Fernandes, A.; Pereira, R. C. ^[4]; Figueiredo, J. ^[4]; Kiptily, V. ^[5]; Murari, A. ^[6]; Consorzio RFX, Padova ^[7]

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1. Dipartimento di Fisica “G. Occhialini,” Università degli Studi di Milano-Bicocca, Milano (Italy)
2. Istituto di Fisica del Plasma “P. Caldirola,” CNR, Milano (Italy)
3. Narodowe Centrum Badań Jądrowych (NCBJ), 05-400 Otwock-Swierk (Poland)
4. Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisboa (Portugal)
5. Culham Science Centre for Fusion Energy, Culham (United Kingdom)
6. EUROfusion Programme Management Unit, Culham Science Centre, OX14 3DB Abingdon (United Kingdom)
7. CNR, ENEA, INFN, Universita’ di Padova, Acciaierie Venete SpA; Italy

In this work, we describe the solution developed by the gamma ray camera upgrade enhancement project to improve the spectroscopic properties of the existing JET γ-ray camera. Aim of the project is to enable gamma-ray spectroscopy in JET deuterium-tritium plasmas. A dedicated pilot spectrometer based on a LaBr{sub 3} crystal coupled to a silicon photo-multiplier has been developed. A proper pole zero cancellation network able to shorten the output signal to a length of 120 ns has been implemented allowing for spectroscopy at MHz count rates. The system has been characterized in the laboratory and shows an energy resolution of 5.5% at E{sub γ} = 0.662 MeV, which extrapolates favorably in the energy range of interest for gamma-ray emission from fast ions in fusion plasmas.

• OSTI ID: 22596475
• Journal Information: Review of Scientific Instruments, Vol. 87, Issue 11; Other Information: (c) 2016 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
DEUTERIUM
ENERGY RESOLUTION
GAMMA CAMERAS
GAMMA RADIATION
GAMMA SPECTROSCOPY
IONS
JETS
LANTHANUM BROMIDES
LENGTH
MEV RANGE 01-10
MHZ RANGE
PLASMA
SIGNALS
SILICON
SPECTROMETERS
TRITIUM