# Test of SensL SiPM coated with NOL-1 wavelength shifter in liquid xenon

## TL;DR

This study compares the performance of a SensL SiPM coated with NOL-1 to a Hamamatsu VUV3 MPPC in liquid xenon, measuring their efficiency in detecting 175-nm scintillation light.

## Contribution

It provides the first direct comparison of SensL SiPM and Hamamatsu MPPC performance in liquid xenon for VUV light detection.

## Key findings

- SensL SiPM achieved 13.1% detection efficiency.
- Hamamatsu MPPC achieved 6.0% detection efficiency.
- SensL SiPM shows higher efficiency in liquid xenon detection.

## Abstract

A SensL MicroFC-SMT-60035 6x6 mm$^2$ silicon photo-multiplier coated with a NOL-1 wavelength shifter have been tested in the liquid xenon to detect the 175-nm scintillation light. For comparison, a Hamamatsu vacuum ultraviolet sensitive MPPC VUV3 3x3 mm$^2$ was tested under the same conditions. The photodetection efficiency of $13.1 \pm 2.5$% and $6.0 \pm 1.0$%, correspondingly, is obtained.