Characterization of Hamamatsu 64-channel TSV SiPMs

TL;DR

This paper thoroughly characterizes the latest 64-channel Hamamatsu SiPM array, assessing its performance metrics and wavelength sensitivity to support its application in balloon-based cosmic ray detection.

Contribution

It provides detailed measurements of breakdown voltage, gain, PDE, dark-count rate, and crosstalk for all channels, including wavelength and temperature dependencies, for the first time in this array.

Findings

Improved PDE at wavelengths below 400nm compared to previous models.

Temperature affects gain, PDE, dark-count rate, and crosstalk significantly.

All 64 channels exhibit consistent performance metrics.

Abstract

The Hamamatsu UV-light enhanced 64-channel SiPM array of the newest generation (S13361-3050AS-08) has been examined for the purpose of being used for the Silicon Elementary Cell Add-on (SiECA) of the EUSO-SPB balloon experiment. Characterization measurements have been performed with the newly installed Single Photon Calibration Stand at KIT (SPOCK). The results of the characterization measurements including the breakdown voltage, the gain, the PDE, the dark-count rate and the crosstalk probability of all 64 SiPM channels are presented. Additional measurements of the SiPM sensitivity to photons with wavelengths lower than 400nm show an improved PDE for small wavelengths compared to the SiPM array S12642-0808PA-50, which was also investigated for comparison. The response dynamics have been investigated for low numbers of incoming photons. Temperature dependent measurements of the gain, the PDE, the dark-count rate and the crosstalk probability have been performed for one channel of the SiPM array.