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Energy resolution of gamma-ray spectroscopy of JET plasmas with a LaBr(3) scintillator detector and digital data acquisition (Articolo in rivista)

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Energy resolution of gamma-ray spectroscopy of JET plasmas with a LaBr(3) scintillator detector and digital data acquisition (Articolo in rivista) (literal)

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Nocente M.; Tardocchi M.; Chugunov I.; Pereira R.C.; Edlington T.; Fernandes A.M.; Gin D.; Grosso G.; Kiptily V.; Murari A.; Neto A.; Perelli Cippo E.; Pietropaolo A.; Proverbio I.; Shevelev A.; Sousa J.; Syme B.; Gorini G.; JET-EFDA Contributors (2010)
Energy resolution of gamma-ray spectroscopy of JET plasmas with a LaBr(3) scintillator detector and digital data acquisition
in Review of scientific instruments; American Institute of Physics, Melville [NY] (Stati Uniti d'America)
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Nocente M.; Tardocchi M.; Chugunov I.; Pereira R.C.; Edlington T.; Fernandes A.M.; Gin D.; Grosso G.; Kiptily V.; Murari A.; Neto A.; Perelli Cippo E.; Pietropaolo A.; Proverbio I.; Shevelev A.; Sousa J.; Syme B.; Gorini G.; JET-EFDA Contributors (literal)

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Article Number 10D321. La rivista è pubblicata anche online con ISSN 1089-7623. (literal)

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1 Dipartimento di Fisica, Università degli Studi di Milano-Bicocca and Istituto di Fisica del Plasma, Associazione EURATOM-ENEA-CNR, 20125 Milano, Italy / - 2 A. F. Ioffe Physico-Technical Institute, St. Petersburg 194021, Russia / - 3 Associação EURATOM/IST Centro de Fusão Nuclear, Instituto Superior Técnico, 1049-001 Lisboa, Portugal / - 4 Culham Centre for Fusion Energy, Culham OX143DB, United Kingdom / - 5 Consorzio RFX, 35127 Padova, Italy / - 6 JET-EFDA, Culham Science Centre, Abingdon OX14 3DB, United Kingdom. (M. Nocente 1, M. Tardocchi 1, I. Chugunov 2, R. C. Pereira 3, T. Edlington 4, A. M. Fernandes 3, D. Gin 2, G. Grosso 1, V. Kiptily 4, A. Murari 5, A. Neto 3, E. Perelli Cippo 1, A. Pietropaolo 1, I. Proverbio 1, A. Shevelev 2, J. Sousa 3, B. Syme 4, G. Gorini 1, JET-EFDA Contributors 6) (literal)

Titolo

Energy resolution of gamma-ray spectroscopy of JET plasmas with a LaBr(3) scintillator detector and digital data acquisition (literal)

Abstract

A new high efficiency, high resolution, fast ? -ray spectrometer was recently installed at the JET tokamak. The spectrometer is based on a LaBr 3 (Ce) scintillator coupled to a photomultiplier tube. A digital data acquisition system is used to allow spectrometry with event rates in excess of 1 MHz expected in future JET DT plasmas. However, at the lower rates typical of present day experiments, digitization can degrade the energy resolution of the system, depending on the algorithms used for extracting pulse height information from the digitized pulses. In this paper, the digital and analog spectrometry methods were compared for different experimental conditions. An algorithm based on pulse shape fitting was developed, providing energy resolution equivalent to the traditional analog spectrometry method. (literal)

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