Testing of Cryogenic Photomultiplier Tubes for the MicroBooNE Experiment
T. Briese, L. Bugel, J. M. Conrad, M. Fournier, C. Ignarra, B. J. P., Jones, T. Katori, R. Navarrete-Perez, P. Nienaber, T. McDonald, B. Musolf, A., Prakash, E. Shockley, T. Smidt, K. Swanson, and M. Toups
TL;DR
This paper details the testing procedures and results for cryogenic photomultiplier tubes used in the MicroBooNE liquid argon detector, ensuring their performance in a cryogenic environment for neutrino detection.
Contribution
It introduces a comprehensive testing protocol for cryogenic PMTs and reports their performance results in the MicroBooNE experiment setup.
Findings
PMTs operate reliably at cryogenic temperatures
Performance metrics meet experimental requirements
Test procedures can be applied to future cryogenic detectors
Abstract
The MicroBooNE detector, to be located on axis in the Booster Neutrino Beamline (BNB) at the Fermi National Accelerator Laboratory (Fermilab), consists of two main components: a large liquid argon time projection chamber (LArTPC), and a light collection system. Thirty 8-inch diameter Hamamatsu R5912-02mod cryogenic photomultiplier tubes (PMTs) will detect the scintillation light generated in the liquid argon (LAr). This article first describes the MicroBooNE PMT performance test procedures, including how the light collection system functions in the detector, and the design of the PMT base. The design of the cryogenic test stand is then discussed, and finally the results of the cryogenic tests are reported.
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