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

(10) University of Liverpool; 11); (11) Queen's University; (12) Queen Mary; (2) LIP; (3) University of Leeds; 4); (4) Laurentian University; (5) University of Sussex; (6) Oxford University

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

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arxiv 1411.4830 v2 pith:LZI3DLHU submitted 2014-11-18 physics.ins-det hep-ex

R. Alves (1) , S. Andringa (2) , S. Bradbury (3) , J. Carvalho (1) , D. Chauhan (2 , 4) , K. Clark (5 , 11)

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I. Coulter (6) F. Descamps (7) E. Falk (5) L. Gurriana (2) C. Kraus (4) G. Lefeuvre (5) A. Maio (2 8 9) J. Maneira (2 8) M. Mottram (5) S. Peeters (5) J. Rose (10) L. Seabra (2) J. Sinclair (5) P. Skensved (11) J. Waterfield (5) R. White (5) J. R. Wilson (12) ((1) LIP University Coimbra Portugal (2) LIP Lisboa (3) University of Leeds UK (4) Laurentian University Sudbury Canada (5) University of Sussex Brighton (6) Oxford University (7) LBNL Berkeley USA (8) FCUL University of Lisbon (9) CFNUL (10) University of Liverpool (11) Queen's University Kingston (12) Queen Mary University of London UK)

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classification physics.ins-dethep-ex

keywords systemcalibrationexperimentlightphotomultiplierarraycommissioningdesign

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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.

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Supernova Detection at SNOLAB
hep-ex 2024-12 accept novelty 1.0 of 10

A review of supernova neutrino detection capabilities at SNOLAB, emphasizing SNO+ and HALO complementarity and potential use of existing water shields as additional detectors.

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