Development Toward a Ground-Based Interferometric Phased Array for Radio Detection of High Energy Neutrinos

• Main Authors: Avva, J., Bechtol, K., Chesebro, T., Cremonisi, 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, A. G., Wissel, S. A.
• Format: Text
• Language: unknown
• Published: arXiv 2016
• Subjects: Instrumentation and Methods for Astrophysics astro-ph.IM; High Energy Astrophysical Phenomena astro-ph.HE; FOS Physical sciences; Greenland
• Online Access: https://dx.doi.org/10.48550/arxiv.1605.03525; https://arxiv.org/abs/1605.03525

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. : 13 Pages, 14 Figures