We have developed a custom amplifier board coupled to a large-format 16-channel Hamamatsu silicon photomultiplier device for use as the light sensor for the electromagnetic calorimeters in the Muon g - 2 experiment at Fermilab. The calorimeter absorber is an array of lead-fluoride crystals, which produces short-duration Cherenkov light. The detector sits in the high magnetic field of the muon storage ring. The SiPMs selected, and their accompanying custom electronics, must preserve the short pulse shape, have high quantum efficiency, be non-magnetic, exhibit gain stability under varying rate conditions, and cover a fairly large fraction of the crystal exit surface area. We describe an optimized design that employs the new-generation of thru-silicon via devices. The performance is documented in a series of bench and beam tests.
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This research was supported by the U.S. National Science Foundation MRI program (PHY-1337542), by the U.S. Department of Energy Office of Science, Office of Nuclear Physics under Award Number DEFG02- 97ER41020, by the Istituto Nazionale di Fisica Nucleare (Italy), and by the EU Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie Grant Agreement No. 690835.
Kaspar, J.; Fienberg, A. T.; Hertzog, D. W.; Huehn, M. A.; Kammel, P.; Khaw, K. S.; Peterson, D. A.; Smith, M. W.; VanWechel, T. D.; Chapelain, A.; Gibbons, L. K.; Sweigart, D. A.; Ferrari, C.; Fioretti, A.; Gabbanini, C.; Venanzoni, G.; Iacovacci, M.; Mastroianni, S.; Giovanetti, K.; Gohn, W.; Gorringe, Tim; and Pocanic, D., "Design and Performance of SiPM-Based Readout of PbF2 Crystals for High-Rate, Precision Timing Applications" (2017). Physics and Astronomy Faculty Publications. 652.