Author/Authors :
Brack، نويسنده , , J.T. and Meyhandan، نويسنده , , R. and Hofman، نويسنده , , G.J. and Matthews، نويسنده , , J.، نويسنده ,
Abstract :
A method of absolute calibration for the air shower fluorescence detectors of the Pierre Auger Observatory is presented, along with preliminary results from prototype equipment. A 2.5 m diameter light source uniformly illuminated by ultra-violet light emitting diodes is calibrated and mounted at the detector aperture. The resulting end-to-end measurement provides a 7% absolute photon calibration at a wavelength of 375 nm.
