Tau neutrinos are expected to comprise one third of both the astrophysical and cosmogenic neutrino flux, but currently the flavor ratio is poorly constrained and the expected flux at energies >100 PeV is low. We present a new concept for a radio detector called BEACON sensitive to tau neutrinos with energies greater than 100 PeV in which a radio interferometer searches for upgoing tau neutrinos from a high elevation mountain. Signals from several antennas are coherently summed at the trigger level, permitting not only directional masking of anthropogenic backgrounds, but also a lower trigger threshold. Simulation studies indicate that a modest array size and small number of stations can achieve competitive sensitivity, provided the receivers are at high enough elevation. As a proof of concept, an array of four 30-80 MHz dual polarized antennas was deployed at the White Mountain Research Station. Acknowledgements We gratefully acknowledge funding from the NSF CAREER Award #1752922, the NSF Award #DGE-1746045, the Cal Poly Frost Fund, the Ministerio de Economía, Industria y Competitividad (FPA2017-85114-P and María de Maeztu Unit of Excellence MDM-2016-0692) and the Xunta de Galicia (ED431C 2017/07) as well as the outstanding staff at WMRS and OVRO and computing resources provided by the Univ. of Chicago Research Computing Center.
|Proceedings of Science
|Published - 2019
|36th International Cosmic Ray Conference, ICRC 2019 - Madison, United States
Duration: Jul 24 2019 → Aug 1 2019
All Science Journal Classification (ASJC) codes