# Development of a novel single-channel, 24~cm$^2$, SiPM-based, cryogenic photodetector

## TL;DR

This paper introduces a new cryogenic SiPM-based photodetector with a large active area, high photon detection efficiency, and low noise, suitable for advanced dark matter and neutrino experiments.

## Contribution

The paper presents the development of a novel single-channel cryogenic SiPM-based photosensor with a large active area and improved performance metrics.

## Key findings

- Single photon counting with SNR > 13
- Dark rate lower than 10^{-2} cps/mm^2
- Photon detection efficiency surpassing traditional PMTs

## Abstract

We report on the realization of a novel SiPM-based, cryogenic photosensor with an active area of 24 cm$^2$ that operates as a single-channel analog detector. The device is capable of single photon counting with a signal to noise ratio better than 13, a dark rate lower than $10^{-2}$ cps/mm$^2$ and an overall photon detection efficiency significantly larger than traditional photomultiplier tubes. This development makes SiPM-based photosensors strong candidates for the next generation of dark matter and neutrino detectors, which will require multiple square meters of photosensitive area, low levels of intrinsic radioactivity and a limited number of detector channels.