NDLI: A compact neutron detector based on the use of a SiPM detector

Content Provider	IEEE Xplore Digital Library
Author	Foster, Mark Ramsden, David
Copyright Year	2008
Description	Author affiliation: University of Southampton, Hampshire, UK, SO17 1BJ (Foster, Mark) \|\| Symetrica Ltd, 2 Venture Road, Southampton Science Park, SO16 7NP, UK (Ramsden, David)
Abstract	This paper explores the performance characteristcs of a compact neutron detector based on the use of a silicon photo-multiplier (SiPM). These devices offer the first true solid-state alternative to traditional photomultiplier tubes in that they provide similar gain and photon-detection efficiency but with the small size and ruggedness of PIN diodes. The performance of a design based on the use of a 23mm diameter LiI crystal, viewed by a 14×14mm square SiPM, has been modeled and tested experimentally using $Cf^{252}$ fission-neutrons. The design incorporates a 10mm thick HDPE moderator in front of the 3mm crystal and an acrylic light-guide behind it. This provides the ability to detect a $10^{4}$ n/s source at 25cm in 12s with a confidence level of 93.5%. The gamma-ray rejection capability of the detector is excellent, allowing reliable detection of neutrons in a $Co^{60}$ gamma-ray background equivalent to a count-rate equivalent to 100kcps in a 2×2” NaI crystal. The impact of temperature changes on the performance of the detector, have also been explored along with methods to compensate for these changes.
Starting Page	1882
Ending Page	1886
File Size	2217317
Page Count	5
File Format	PDF
ISBN	9781424427147
ISSN	10957863
DOI	10.1109/NSSMIC.2008.4774758
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-19
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Neutrons Gamma ray detection Gamma ray detectors Gas detectors Silicon Solid state circuits Photomultipliers Photonic crystals Testing Temperature
Content Type	Text
Resource Type	Article

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