Speaker
Description
TRIDENT is a proposed multi-cubic-kilometer deep-sea neutrino telescope in the South China Sea. In this talk, we first present the status of the TRIDENT Phase-I hybrid Digital Optical Module (hDOM), whose baseline design consists of 31 3-inch PMTs and 21 SiPM arrays. We then report an optimization study for future hDOM designs, based on a candidate configuration with 19 4-inch PMTs and 5 SiPM arrays, with the presented study focusing on the PMT system. We compare 3-inch and 4-inch PMT-based configurations using full-chain simulations that include site-specific seawater optical properties and realistic optical backgrounds. Their performance is evaluated in terms of neutrino detection efficiency, directional reconstruction, and ντ identification over the energy range from 1 TeV to 10 PeV. Our results show that 4-inch PMTs with quantum efficiency comparable to that of 3-inch PMTs can provide similar or better physics performance, while reducing channel count, power consumption, and cost.
