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 dedicated setup was used to measure the primary dark noise, the correlated noise, and the gain of the SiPMs at varying temperatures. A custom-made data acquisition system and analysis software were used to precisely characterize these parameters. We demonstrate that FBK RGB-HD SiPMs with low quenching resistance (RGB-HD-LR$_q$) can be operated from 40 K to 300 K with gains in the range $10^5$ to $10^6$ and noise rates on the order of a few Hz/mm$^2$.
Aalseth, C.E., Acerbi, F., Agnes, P., Albuquerque, I.F.M., Alexander, T., Alici, A., et al. (2017). Cryogenic Characterization of FBK RGB-HD SiPMs. JOURNAL OF INSTRUMENTATION, 12(9), P09030 [10.1088/1748-0221/12/09/P09030].