In September 2021, a site scouting mission known as the TRIDENT pathfinder experiment (TRIDENT EXplorer, T-REX for short) was conducted in the South China Sea with the goal of envisaging a next-generation multi-cubic-kilometer neutrino telescope. One of the main tasks is to measure the in-situ optical properties of seawater at depths between 2800m and 3500m, where the neutrino telescope will be instrumented. To achieve this, we have developed a light emitter module equipped with a clock synchronization system to serve as the light source, which could be operated in pulsing and steady modes. Two light receiver modules housing both photomultiplier tubes (PMTs) and cameras are employed to detect the photons emitted by the light source. This paper presents the instrumentation of the light source in T-REX, including its design, calibration, and performance.
@article{arxiv.2304.14608,
title = {The Light Source of the TRIDENT Pathfinder Experiment},
author = {Wenlian Li and Xiaohui Liu and Wei Tian and Fuyudi Zhang and Shishen Xian and Mingxin Wang and Jiannan Tang and Fan Hu and Ziping Ye and Peng Miao and Zhengyang Sun and Donglian Xu},
journal= {arXiv preprint arXiv:2304.14608},
year = {2025}
}