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TARA (Telescope Array Radar) is a cosmic ray radar detection experiment co-located with Telescope Array (TA), the conventional surface scintillation detector (SD) and fluorescence telescope detector (FD) near Delta, UT. The TARA detector combines a 40 kW transmitter and high gain transmitting antenna which broadcasts the radar carrier over the SD array and in the FD field of view to a 250 MS/s DAQ receiver. Data collection began in August, 2013. We have created a novel signal search technique in which the expected (simulated) radar echo of a particular air shower is used as a matched filter template and compared to radio waveforms obtained by triggering the radar DAQ by the fluorescence detector. This technique is used to calculate radar cross-section (RCS) upper limits on triggers that correspond to TA FD events.

Telescope Array Radar (TARA): First Measurement of EAS Radar Cross-section Upper Limit