1. CeBr3–based detector for gamma-ray spectrometer upgrade at JET.
- Author
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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., and Naish, J.
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GAMMA ray spectrometer , *CERIUM compounds , *BROMIDES , *FAST ions , *NUCLEAR fusion , *SCINTILLATORS - 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 new 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, LaBr 3 :Ce, already tested at JET, and CeBr 3 with a scintillation decay time of ∼20 ns. We report on measurements which were performed with a detector module equipped with a 3” × 3” CeBr 3 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. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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