Archivio Istituzionale della RicercaOne of the important techniques used at JET for studying fast ions is based on measurements of gamma rays which are produced as a result of nuclear reactions between ions and plasma impurities. The intense neutron and gamma-ray fluxes expected during a DT campaign impose dew requirements on detector characteristics used in such experiments. In addition to good energy resolution, detectors must also be characterized by a high signal-to-noise ratio and allow to perform measurements at high counting rate about 1 Mcps. The scintillators which fulfill these requirements are, among others, LaBr3:Ce, already tested at JET, and CeBr3 with a scintillation decay time of similar to 20 ns. We report on measurements which were performed with a detector module equipped with a 3" x 3" CeBr3 scintillator and with an active voltage divider AVD@NCBJ, designed and constructed at NCBJ. Standard gamma -ray sources, as well as a PuBe source, were used for measurements. The comparison of measured and Monte Carlo simulated spectra is also presented. (C) 2017 Elsevier B.V. All rights reserved.
CeBr3–based detector for gamma-ray spectrometer upgrade at JET / Kwiatkowski, R.; Bołtruczyk, G.; Brosławski, A.; Gosk, M.; Korolczuk, S.; Mianowski, S.; Szydłowski, A.; Urban, A.; Zychor, I.; Braic, V.; Costa Pereira, R.; Craciunescu, T.; Croft, D.; Curuia, M.; Fernandes, A.; Goloborod’Ko, V.; Gorini, G.; Kiptily, V.; Lengar, I.; Naish, J.; Naish, R.; Nocente, M.; Schoepf, K.; Santos, B.; Soare, S.; Subba, F.; Tardocchi, M.; Yavorskij, V.; Zoita, V. L.. - In: FUSION ENGINEERING AND DESIGN. - ISSN 0920-3796. - 123:(2017), pp. 986-989. [10.1016/j.fusengdes.2017.02.103]
CeBr3–based detector for gamma-ray spectrometer upgrade at JET
Subba, F.;
2017
Abstract
One of the important techniques used at JET for studying fast ions is based on measurements of gamma rays which are produced as a result of nuclear reactions between ions and plasma impurities. The intense neutron and gamma-ray fluxes expected during a DT campaign impose dew requirements on detector characteristics used in such experiments. In addition to good energy resolution, detectors must also be characterized by a high signal-to-noise ratio and allow to perform measurements at high counting rate about 1 Mcps. The scintillators which fulfill these requirements are, among others, LaBr3:Ce, already tested at JET, and CeBr3 with a scintillation decay time of similar to 20 ns. We report on measurements which were performed with a detector module equipped with a 3" x 3" CeBr3 scintillator and with an active voltage divider AVD@NCBJ, designed and constructed at NCBJ. Standard gamma -ray sources, as well as a PuBe source, were used for measurements. The comparison of measured and Monte Carlo simulated spectra is also presented. (C) 2017 Elsevier B.V. All rights reserved.
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https://hdl.handle.net/11583/2986881