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Phased arrays: A strategy to lower the energy threshold for neutrinos

Wissel, S; Avva, J; Bechtol, K; Chesebro, T; Cremonesi, L; Gupta, A; Ludwig, A; ... Vieregg, A; + view all (2017) Phased arrays: A strategy to lower the energy threshold for neutrinos. In: Buitink, S and Horandel, JR and DeJong, S and Lahmann, R and Nahnhauer, R and Scholten, O, (eds.) Proceedings of the 7th International Conference on Acoustic and Radio EeV Neutrino Detection Activities (ARENA). EDP Sciences Green open access

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Abstract

In-ice radio arrays are optimized for detecting the highest energy, cosmogenic neutrinos expected to be produced though cosmic ray interactions with background photons. However, there are two expected populations of high energy neutrinos: the astrophysical flux observed by IceCube (∼1 PeV) and the cosmogenic flux (∼ 1017 eV or 100 PeV). Typical radio arrays employ a noise-riding trigger, which limits their minimum energy threshold based on the background noise temperature of the ice. Phased radio arrays could lower the energy threshold by combining the signals from several channels before triggering, thereby improving the signal-to-noise at the trigger level. Reducing the energy threshold would allow radio experiments to more efficiently overlap with optical Cherenkov neutrino telescopes as well as for more efficient searches for cosmogenic neutrinos. We discuss the proposed technique and prototypical phased arrays deployed in an anechoic chamber and at Greenland’s Summit Station.

Type: Proceedings paper
Title: Phased arrays: A strategy to lower the energy threshold for neutrinos
Event: 7th International Conference on Acoustic and Radio EeV Neutrino Detection Activities (ARENA)
Location: Groningen, NETHERLANDS
Dates: 07 June 2016 - 10 June 2016
Open access status: An open access version is available from UCL Discovery
DOI: 10.1051/epjconf/201713505007
Publisher version: http://dx.doi.org/10.1051/epjconf/201713505007
Language: English
Additional information: © The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
Keywords: RADIOFREQUENCY ATTENUATION, ICE
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
URI: http://discovery.ucl.ac.uk/id/eprint/1573442
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