Cryogenic characterization of FBK RGB-HD SiPMs

Agradecimentos: The development of the NUV-HD and NUV-HD-LF SiPM technologies was funded by the EU FP7 project SUBLIMA, Grant 241711. We acknowledge support from NSF (US, Grant PHY-1314507 for Princeton University), the Istituto Nazionale di Fisica Nucleare (Italy) and Laboratori Nazionali del Gran Sasso (Italy) Abstract: We report on the cryogenic characterization of Red Green Blue - High Density (RGB-HD) SiPMs developed at Fondazione Bruno Kessler (FBK) as part of the DarkSide program of dark matter searches with liquid argon time projection chambers. A cryogenic setup was used to operate the SiPMs at varying temperatures and a custom data acquisition system and analysis software were used to precisely characterize the primary dark noise, the correlated noise, and the gain of the devices. We demonstrate that FBK RGB-HD SiPMs with low quenching resistance (RGB-HD-LRq) can be operated from 40K to 300K with gains in the range 105 to 106 and noise rates at a level of around 1 Hz/mm(2) Fechado