Photomultiplier requirements and pre-calibration for the SABRE South Liquid Scintillator Veto

Date

2025

Authors

Milligan, L.J.
Urquijo, P.
Barberio, E.
Bashu, V.U.
Bignell, L.J.
Bolognino, I.
Chhun, S.S.
Dastgiri, F.
Fruth, T.
Fu, G.

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Advisors

Journal Title

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Journal article

Citation

Journal of Instrumentation, 2025; 20(07):P07049-0-P07049-28

Statement of Responsibility

The SABRE South Collaboration

Conference Name

DOI

10.1088/1748-0221/20/07/p07049

Abstract

We present a study of the oil-proof base Hamamatsu R5912 photomultiplier tubes that will be used in the SABRE South linear-alkylbenzene liquid scintillator veto. SABRE South is a dark matter direct detection experiment at the Stawell Underground Physics Laboratory, aiming to test the DAMA/LIBRA dark matter annual modulation signal. We discuss the requirements of the liquid scintillator system and its photomultipliers, outline the methods and analysis used for the characterisation measurements, and results from initial tests. We discuss the impact of these measurements on the performance of the active veto system and explore analysis methods to allow for low threshold operation. Finally, we include results from a small scale liquid scintillator detector prototype used to assess the future performance of pulse shape discrimination in the liquid scintillator veto, and how well accommodated it is by the R5912 PMTs.

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© 2025 The Author(s). Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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http://purl.org/au-research/grants/arc/CE200100008
 http://purl.org/au-research/grants/arc/LE190100196
 http://purl.org/au-research/grants/arc/LE170100162
 http://purl.org/au-research/grants/arc/LE160100080
 http://purl.org/au-research/grants/arc/DP190103123
 http://purl.org/au-research/grants/arc/DP170101675
 http://purl.org/au-research/grants/arc/LP150100705

Published Version

https://doi.org/10.1088/1748-0221/20/07/p07049

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Persistent link to this record

https://hdl.handle.net/2440/147794