PoS - Proceedings of Science
Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Neutrino. NU-instrumentation
Muon track reconstruction and veto performance with D-Egg sensor for IceCube-Gen2
A. Stoessl* The IceCube-Gen2 Collaboration
*corresponding author
Full text: pdf
Pre-published on: August 16, 2017
Published on: August 03, 2018
Abstract
The planned extension of IceCube, IceCube-Gen2, a cubic-kilometer sized neutrino observatory,
aims at increasing the rate of observed astrophysical neutrinos by up to a factor of 10. The
discovery of a high energy neutrino point source is one of its primary science goals. Improv-
ing the sensitivity of the individual modules is a necessity to achieve the desired design goal of
IceCube-Gen2. A way of improving their sensitivity is the increase of photocathode area. The
proposed module called the D-Egg will utilize two 8" Hamamatsu R5912-100 photomultiplier
tubes (PMTs), with one facing upwards and one downwards. These PMTs have an increased
quantum efficiency and their sensitivity is comparable to the 10" PMT used by IceCube. This
essentially leads to an increase in sensitivity by almost a factor of 2 with a full 4π solid angle
acceptance. A simulation study is presented that indicates improvement in angular resolution
using current muon reconstruction techniques due to the new sensor design. Since the proposed
module is equipped with an upward facing PMT, further emphasis will be set on the development
of new reconstruction techniques that exploit this geometry, as well as an improvement of veto
probability for incoming muon tracks, which is crucial for neutrino astronomy in the Southern
sky.
DOI: https://doi.org/10.22323/1.301.1038
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