Detection of ultra high energy neutrinos with the Radar Echo Telescope
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Topic: SLAC FPD Experimental Seminar
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The Radar Echo Telescope is a proposed detector that aims to target neutrinos at energies at and above 10 PeV, in an effort to extend the neutrino spectrum beyond the highest energy neutrinos detected to date. When a high-energy particle (like a neutrino) interacts in a dense material, it produces a relativistic cascade of charged particles, leaving an ionization trail behind. Radio waves can be transmitted toward---and reflected from---this ionization trail, to be detected by distant receivers. This radar echo method can be used to detect ultra high-energy neutrino interactions in the ice. This talk will be broken up into 4 sections. First, I explore the history and theory of the technique. Second, I discuss experiment T576 at SLAC, where the first direct experimental evidence of radar echoes from particle cascades was observed. Third, I discuss the Radar Echo Telescope for Cosmic Rays (RET-CR), a pathfinder experiment that aims to detect radar echoes from the ionized trail left in the ice as an ultra-high energy cosmic ray air shower core impacts the surface of a high-elevation ice sheet. Finally, I will discuss the eventual Radar Echo Telescope for Neutrinos (RET-N), which seeks to detect neutrinos at energies of 10 PeV and beyond.