Development toward a ground-based interferometric phased array for radio detection of high energy neutrinos

The in-ice radio interferometric phased array technique for detection of high energy neutrinos looks for Askaryan emission from neutrinos interacting in large volumes of glacial ice, and is being developed as a way to achieve a low energy threshold and a large effective volume at high energies. The...

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Bibliographic Details
Main Authors: Avva, J, Bechtol, K, Chesebro, T, Cremonesi, L, Deaconu, C, Gupta, A, Ludwig, A, Messino, W, Miki, C, Nichol, R, Oberla, E, Ransom, M, Romero-Wolf, A, Saltzberg, D, Schlupf, C, Shipp, N, Varner, G, Vieregg, AG, Wissel, SA
Format: Article in Journal/Newspaper
Language:English
Published: ELSEVIER SCIENCE BV 2017
Subjects:
Ultra-high energy neutrinos
radio detection
phased array
Greenland
Online Access:https://discovery.ucl.ac.uk/id/eprint/10050468/1/1605.03525.pdf
https://discovery.ucl.ac.uk/id/eprint/10050468/
Description
Summary:The in-ice radio interferometric phased array technique for detection of high energy neutrinos looks for Askaryan emission from neutrinos interacting in large volumes of glacial ice, and is being developed as a way to achieve a low energy threshold and a large effective volume at high energies. The technique is based on coherently summing the impulsive Askaryan signal from multiple antennas, which increases the signal-to-noise ratio for weak signals. We report here on measurements and a simulation of thermal noise correlations between nearby antennas, beamforming of impulsive signals, and a measurement of the expected improvement in trigger efficiency through the phased array technique. We also discuss the noise environment observed with an analog phased array at Summit Station, Greenland, a possible site for an interferometric phased array for radio detection of high energy neutrinos.

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