The calibration system for the photomultiplier array of the SNO+ experiment

Alves, R, Andringa, S, Bradbury, S, Carvalho, J, Chauhan, D, Clark, K, Coulter, I, Descamps, F, Falk, E, Gurriana, L, Kraus, C, Lefeuvre, G, Maio, A, Maneira, J, Mottram, M, Peeters, S, Rose, J, Seabra, L, Sinclair, J, Skensved, P, Waterfield, J, White, R and Wilson, J R (2015) The calibration system for the photomultiplier array of the SNO+ experiment. Journal of Instrumentation, 10. P03002. ISSN 1748-0021

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Abstract

A light injection system using LEDs and optical fibres was designed for the calibration and monitoring of the photomultiplier array of the SNO+ experiment at SNOLAB. Large volume, non-segmented, low-background detectors for rare event physics, such as the multi-purpose SNO+ experiment, need a calibration system that allow an accurate and regular measurement of the performance parameters of their photomultiplier arrays, while minimising the risk of radioactivity ingress. The design implemented for SNO+ uses a set of optical fibres to inject light pulses from external LEDs into the detector. The design, fabrication and installation of this light injection system, as well as the first commissioning tests, are described in this paper. Monte Carlo simulations were compared with the commissioning test results, confirming that the system meets the performance requirements.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics > QC0770 Nuclear and particle physics. Atomic energy. Radioactivity > QC0793 Elementary particle physics
Depositing User: Simon Peeters
Date Deposited: 13 Jul 2015 06:40
Last Modified: 10 Sep 2017 02:02
URI: http://sro.sussex.ac.uk/id/eprint/54529

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Project NameSussex Project NumberFunderFunder Ref
STFC Consolidated Grant SupplementG0927STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCILST/J001007/1
STFC Consolidated GrantUnsetSTFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCILST/K001329/1