Author/Authors :
Kawana، نويسنده , , Shingo and Sakurai، نويسنده , , Nobuyuki and Fujii، نويسنده , , Toshihiro and Fukushima، نويسنده , , Masaki and Inoue، نويسنده , , Naoya and Matthews، نويسنده , , John N. and Ogio، نويسنده , , Shoichi and Sagawa، نويسنده , , Hiroyuki and Taketa، نويسنده , , Akimichi and Takita، نويسنده , , Masato and Thomas، نويسنده , , Stan B. and Tokuno، نويسنده , , Hisao and Tsunesada، نويسنده , , Yoshiki and Udo، نويسنده , , Shigeharu and Wiencke، نويسنده , , Lawrence R.، نويسنده ,
Abstract :
We performed photometric calibration of the PhotoMultiplier Tube (PMT) and readout electronics used for the new fluorescence detectors of the Telescope Array (TA) experiment using Rayleigh scattered photons from a pulsed nitrogen laser beam. The experimental setup, measurement procedure, and results of calibration are described. The total systematic uncertainty of the calibration is estimated to be 7.2%. An additional uncertainty of 3.7% is introduced by the transport of the calibrated PMTs from the laboratory to the TA experimental site.
Keywords :
Rayleigh scattering , Calibration of photomultiplier , Ultra-high energy cosmic ray , Air fluorescence telescope
