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 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. 
J. Avva, K. Bechtol, T. Chesebro, L. Cremonisi, C. Deaconu, A. Gupta,   A. Ludwig, W. Messino, C. Miki, R. Nichol, E. Oberla...
astro-ph.IM astro-ph.HE