A next-generation optical sensor for IceCube-Gen2

TL;DR

This paper discusses the development of a new optical sensor module for IceCube-Gen2, featuring multiple PMTs within a compact pressure vessel, addressing mechanical, electronic, and integration challenges for next-generation neutrino detection.

Contribution

It introduces a novel sensor design with multiple PMTs in a compact vessel, and presents solutions to mechanical and electronic challenges for IceCube-Gen2.

Findings

Prototype modules are being developed and will be installed in IceCube Upgrade.

Design solutions address tight bore hole constraints and electronic integration.

The sensor aims to improve neutrino detection capabilities.

Abstract

For the in-ice component of the next generation neutrino observatory at the South Pole, IceCube-Gen2, a new sensor module is being developed, which is an evolution of the D-Egg and mDOM sensors developed for the IceCube Upgrade. The sensor design features up to 18 4-inch PMTs distributed homogeneously in a borosilicate glass pressure vessel. Challenges arise for the mechanical design from the tight constraints on the bore hole diameter (which will be 2 inches smaller than for IceCube Upgrade) and from the close packing of the PMTs. The electronics design must meet the space constraints posed by the mechanical design as well as the power consumption and cost considerations from over 10,000 optical modules being deployed. This contribution presents forward-looking solutions to these design considerations. Prototype modules will be installed and integrated in the IceCube Upgrade.