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Title: IceVeto: Extended PeV neutrino astronomy in the Southern Hemisphere with IceCube

IceCube, the world's largest high-energy neutrino observatory, built at the South Pole, recently reported evidence of an astrophysical neutrino flux extending to PeV energies in the Southern Hemisphere. This observation raises the question of how the sensitivity in this energy range could be further increased. In the down-going sector, in IceCube's case the Southern Hemisphere, backgrounds from atmospheric muons and neutrinos pose a challenge to the identification of an astrophysical neutrino flux. The IceCube analysis, that led to the evidence for astrophysical neutrinos, is based on an in-ice veto strategy for background rejection. One possibility available to IceCube is the concept of an extended surface detector, IceVeto, which could allow the rejection of a large fraction of atmospheric backgrounds, primarily for muons from cosmic ray (CR) air showers as well as from neutrinos in the same air showers. Building on the experience of IceTop/IceCube, possibly the most cost-effective and sensitive way to build IceVeto is as an extension of the IceTop detector, with simple photomultiplier based detector modules for CR air shower detection. Initial simulations and estimates indicate that such a veto detector will significantly increase the sensitivity to an astrophysical flux of ν{sub μ} induced muon tracks in themore » Southern Hemisphere compared to current analyses. Here we present the motivation and capabilities based on initial simulations. Conceptual ideas for a simplified surface array will be discussed briefly.« less
Authors:
 [1] ;
  1. Physikalisches Institut IIIB RWTH Aachen D-52056, Aachen (Germany)
Publication Date:
OSTI Identifier:
22390636
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1630; Journal Issue: 1; Conference: VLVvT 13: 6. International Workshop on Very Large Volumte Neutrino Telescopes, Stockholm (Sweden), 5-7 Aug 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ASTROPHYSICS; CHERENKOV COUNTERS; COMPARATIVE EVALUATIONS; MULTIPARTICLE SPECTROMETERS; MUONS; NEUTRINO DETECTION; NEUTRINOS; PARTICLE IDENTIFICATION; PEV RANGE; SCINTILLATION COUNTERS; SENSITIVITY; SOUTHERN HEMISPHERE; TELESCOPE COUNTERS