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SLAC T-510 is an experiment to measure radio frequency emission from cascades of secondary particles in a dense medium in the presence of a magnetic field. The main goal of the experiment is to validate the models used to study the radio emission from extensive air showers caused by ultra-high energy cosmic rays in the earth’s atmosphere.

T-510 uses a 5 GeV electron beam to create secondary cascades in a 4 m long high-density polyethylene target placed in a magnetic field up to 1000G. The radio frequency emission is measured in horizontal and vertical polarizations by both UHF and VHF antenna arrays placed at different locations with respect to the Cherenkov angle.