The SalSA collaboration is a collaboration of university groups and SLAC working to instrument a 1000 cubic-kilometer steradian neutrino detector. This detector would record hundreds of neutrino events resulting from the inelastic scattering of ultra-high energy protons on the cosmic microwave background radiation anywhere in the visible Universe (the so-called "GZK-induced neutrinos"). This detector should observe these ultra high-energy neutrinos with energies greater than 1017 eV.
The detection technique is based on the radio emission expected from ultra-high energy showers first noted by Gurgen Askaryan. The extremely long attenuation length of salt to radio waves, of order of many hundreds of water-equivalent meters, will allow us to instrument a huge volume with a sparse array of high-bandwidth antennas.
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