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@INPROCEEDINGS{Durini:283029,
author = {Durini, Daniel and Rongen, Heinz and Frielinghaus, Henrich
and Feoktystov, Artem and van Waasen, Stefan},
title = {{D}ark current performance of an analog {S}i{PM} array
under irradiation with cold neutrons},
reportid = {FZJ-2016-01712},
year = {2016},
abstract = {Research on novel approaches concerning scintillation based
solid-state detectors to be used in small angle neutron
scattering (SANS) experiments [1] has been triggered through
low world-wide availability of the 3He gas [2], which has
been the detection material of choice for most neutron
detection tasks. The active area sizes of such detectors
might vary between 1 m² (sometimes smaller) and 30 m² or
more, depending on the instrument design. It is reasonable
to stress the enormous readout and data rate concerned
complexities accompanying a pixelated solid-state approach
for SANS scintillator detectors, if a single “pixel”
size of some mm² is considered in neutron detectors with
active areas of several tens of square meters. Nevertheless,
in SANS instruments requiring active areas up to 1 m², the
approach based on an indirect detection of impinging cold
and thermal neutrons via pixelated scintillator detectors,
where the size of each “pixel” would be defined only by
the dispersion of visible photons produced within the
overlying scintillator material, this approach becomes
feasible. An interesting candidate for the photodetector
part in these detectors could be an array of analog silicon
photomultipliers (SiPM). It would yield the possibility of
single photon counting, low power consumption, a space
resolution of at least 3×3 mm² (or less), and the
possibility of acceptable photodetection performance even in
presence of high magnetic fields. The main risk defined so
far for using this technology in SANS scintillation
detectors is their performance in hard radiation
environments: in this case, under the irradiation of thermal
or cold neutrons. We investigated the dark signal and
breakdown voltage performances of a 12x12 array of SensL
Series C SiPMs with an active area of 3x3 mm² under
irradiation with cold neutrons (lambda = 5 Å, and the main
neutron flux of 108 n·s-1cm-2) up to a dose of 2×1012
n·cm-2. The SiPM detectors were at all times fully
operational, and the measurements were performed in-situ.[1]
D. L. Price and K. Sköld "Introduction to Neutron
Scattering", Methods in Experimental Physics, Volume 23,
Part A, pp. 1–97, Academic Press (1986)[2] U.S. Government
Accountability Office (GAO). Neutron Detectors. Alternatives
to using helium-3. Technology assessment. Report to
Congressional Requesters, GAO—11-753 (2011)},
month = {Feb},
date = {2016-02-15},
organization = {607. WE-Heraeus-Seminar: Semiconductor
detectors in astronomy, medicine,
particle physics and photon science,
Bad Honnef (Germany), 15 Feb 2016 - 17
Feb 2016},
subtyp = {Other},
cin = {ZEA-2 / JCNS (München) ; Jülich Centre for Neutron
Science JCNS (München) ; JCNS-FRM-II},
cid = {I:(DE-Juel1)ZEA-2-20090406 /
I:(DE-Juel1)JCNS-FRM-II-20110218},
pnm = {632 - Detector technology and systems (POF3-632) / 6G15 -
FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-632 / G:(DE-HGF)POF3-6G15 /
G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)KWS1-20140101},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/283029},
}