Acceptance Tests of more than 10 000 Photomultiplier Tubes for the multi-PMT Digital Optical Modules of the IceCube Upgrade
arxiv(2024)
摘要
More than 10,000 photomultiplier tubes (PMTs) with a diameter of 80 mm will
be installed in multi-PMT Digital Optical Modules (mDOMs) of the IceCube
Upgrade. These have been tested and pre-calibrated at two sites. A throughput
of more than 1000 PMTs per week with both sites was achieved with a modular
design of the testing facilities and highly automated testing procedures. The
testing facilities can easily be adapted to other PMTs, such that they can,
e.g., be re-used for testing the PMTs for IceCube-Gen2. Single photoelectron
response, high voltage dependence, time resolution, prepulse, late pulse,
afterpulse probabilities, and dark rates were measured for each PMT. We
describe the design of the testing facilities, the testing procedures, and the
results of the acceptance tests.
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