Poster (After Call)

FZJ-2019-06598

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Performance Measurement of a 2D Position Sensitive Neutron Scintillation Detector based on Silicon Photomultipliers

Kumar, S. (Corresponding author)FZJ* ; Herzkamp, M.FZJ* ; Degenhardt, C.FZJ* ; Seemann, J.FZJ* ; Vezhlev, E.FZJ* ; van Waasen, S.FZJ*

2019

Abstract: In recent years, the price increase of 3He has triggered the search for alternative neutron detectors. One of the viable options is a scintillation based neutron detector. Usually, Photomultiplier tubes (PMTs) are used in these detectors for photodetection. However, with increase in performance requirements, such as operability in magnetic field and spatial resolution, a need for an advanced neutron detector arises. Therefore, we developed a detector prototype with an active area of 13 cm × 13 cm using Silicon photomultipliers (SiPM). As compared to PMTs, SiPMs offer more compactness, more robustness and lower sensitivity to magnetic field. The final detector is aimed to be used in the future at the TREFF instrument of the Heinz Maier-Leibnitz Zentrum (MLZ) in Garching, Germany for neutron reflectometry (NR). First measurements were carried out at TREFF and at the dedicated detector test instrument V17 at BER-II of HZB in Berlin, Germany. In this work, we report the results for detection efficiency, gamma discrimination, two dimensional position resolution, count rate and detection linearity.

Keyword(s): Engineering, Industrial Materials and Processing (1st) ; Instrument and Method Development (2nd)

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Contributing Institute(s):

1. Zentralinstitut für Elektronik (ZEA-2)

Research Program(s):

1. 632 - Detector technology and systems (POF3-632) (POF3-632)

Experiment(s):

1. TREFF: Neutronenreflektometer (NL5S)

Appears in the scientific report 2019

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