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Characterization of a compact LaBr3(Ce) detector with Silicon photomultipliers at high 14 MeV neutron fluxes
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Tillämpad kärnfysik.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Tillämpad kärnfysik.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Tillämpad kärnfysik.
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Rekke forfattare: 12372017 (engelsk)Inngår i: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 12, artikkel-id C10007Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A new compact gamma-ray spectrometer based on a Silicon Photo-Multiplier (SiPM) coupled to a LaBr3(Ce) crystal has been developed for the upgrade of the Gamma Camera (GC) of JET, where it must operate in a high intensity neutron/gamma-ray admixed field. The work presents the results of an experiment aimed at characterizing the effect of 14 MeV neutron irradiation on both LaBr3(Ce) and SiPM that compose the full detector. The pulse height spectrum from neutron interactions with the crystal has been measured and is successfully reproduced by MCNP simulations. It is calculated that about 8% of the impinging neutrons leave a detectable signal of which less than 4% of the events occur in the energy region above 3 MeV, which is of interest for gamma-ray spectroscopy applications. Neutron irradiation also partly degrades the performance of the SiPM and this is mostly manifested as an increase of the dark current versus the neutron fluence. However, it was found that the SiPM can be still operated up to a fluence of 4 x 10(10) n/cm(2), which is the highest value we experimentally tested. Implications of these results for GC measurements at JET are discussed.

sted, utgiver, år, opplag, sider
IOP PUBLISHING LTD , 2017. Vol. 12, artikkel-id C10007
Emneord [en]
Nuclear instruments and methods for hot plasma diagnostics, Photon detectors for UV, visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs etc), Radiation-hard detectors, Spectrometers
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Identifikatorer
URN: urn:nbn:se:uu:diva-399658DOI: 10.1088/1748-0221/12/10/C10007ISI: 000414167000007OAI: oai:DiVA.org:uu-399658DiVA, id: diva2:1379794
Konferanse
2nd European Conference on Plasma Diagnostics (ECPD), APR 18-21, 2017, Bordeaux, FRANCE
Merknad

For complete list of authors see http://dx.doi.org/10.1088/1748-0221/12/10/C10007

Tilgjengelig fra: 2019-12-17 Laget: 2019-12-17 Sist oppdatert: 2019-12-17bibliografisk kontrollert

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Andersson Sundén, ErikBinda, FedericoCecconello, MarcoConroy, SeanDzysiuk, NataliiaEricsson, GöranEriksson, JacobHellesen, CarlHjalmarsson, AndersPossnert, GöranSjöstrand, HenrikSkiba, MateuszWeiszflog, Matthias

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Andersson Sundén, ErikBinda, FedericoCecconello, MarcoConroy, SeanDzysiuk, NataliiaEricsson, GöranEriksson, JacobHellesen, CarlHjalmarsson, AndersPossnert, GöranSjöstrand, HenrikSkiba, MateuszWeiszflog, Matthias
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