Using GHz FADCs to Reject Hadrons from STACEE Data


Since March 2002, STACEE has been operating with a 1 GHz flash analog to digital converter (FADC) on each channel of its 64 heliostat detector. Prior to that time, all gamma-ray detections by STACEE relied solely on wavefront timing measurements. Now, with the FADCs, much more information on the lateral profile and charge content of the shower is measured. Here, we describe how the FADCs have been integrated into the operation of STACEE and report on some initial prosp ects for using this additional information to increase STACEE’s signal-to-noise ratio.

In Proceedings, 28th International Cosmic Ray Conference