Testbed for measurements of coherent radio Cherenkov emission from cosmic-ray-induced cascades

We conduct a search for the coherent Cherenkov radiation (from negative charge excess), induced by high energy cosmic-rays. As a medium for detecting Cherenkov radiation we use a 20 ton target of synthetic rock salt contained within a scintillation counter cosmic-ray hodoscope. Two parallel arrays of crossed bow tie antennas are put inside the salt bed and used as a detection tool. We also present preliminary results from beam tests of the approach done at SLAC.