Optimization of the optical array geometry for IceCube-Gen2

TL;DR

This paper presents an optimization study for IceCube-Gen2's optical array geometry, aiming to maximize point source sensitivity by varying string spacing from 150m to 350m.

Contribution

It introduces a systematic analysis of string spacing effects on detector sensitivity, guiding optimal array design for IceCube-Gen2.

Findings

Optimal string spacing identified between 150m and 350m.

Larger spacing increases volume but decreases sensitivity.

Results inform the design for improved neutrino detection.

Abstract

IceCube-Gen2 is a planned extension of the IceCube Neutrino Observatory at the South Pole designed to study the high-energy neutrino sky from TeV to EeV energies with a five times better point source sensitivity than the current IceCube detector. This is achieved by deploying 120 new strings with attached optical sensors in a pattern around IceCube that features considerably larger distances between individual strings than the $\sim$125$\,$m for the existing detector. Here, we present the results of an optimization study searching for the best point source sensitivity while varying the IceCube-Gen2 string spacing between 150$\,$m and 350$\,$m.