6533b871fe1ef96bd12d0d75

RESEARCH PRODUCT

Silicon photomultiplier properties at cryogenic temperatures

Andy ThomasM. BirothPatrick AchenbachE. J. Downie

subject

PhysicsQuenchingNuclear and High Energy PhysicsPhotonbusiness.industryLiquid heliumEpoxyLiquid nitrogenlaw.inventionSilicon photomultiplierOpticslawvisual_artvisual_art.visual_art_mediumOptoelectronicsbusinessInstrumentationIntensity (heat transfer)Dark current

description

Abstract The properties of different types of silicon photomultipliers (SiPMs) were studied at cryogenic temperatures. In liquid nitrogen at 77 K, problems with quenching in Hamamatsu SiPMs and with the protective epoxy layer, covering Zecotek SiPMs, were observed. Tests with one Zecotek SiPM were successful after removal of the epoxy layer. In liquid helium at 4 K, fast signals with pulse lengths shorter than 50 ns were observed, the dark count rate was below 10 Hz and no after-pulses were detected. The gain, as a function of over-voltage, was comparable to room temperature. The SiPM׳s response to photons was found to be linear with intensity for low light levels and single-photon detection was possible at 4 K.

yearjournalcountryeditionlanguage
2015-07-01Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
https://doi.org/10.1016/j.nima.2014.11.020