1202.1934 (Shingo Kawana et al.)

Calibration of Photomultiplier Tubes for the Fluorescence Detector of Telescope Array Experiment using a Rayleigh Scattered Laser Beam    [PDF]

Shingo Kawana, Nobuyuki Sakurai, Toshihiro Fujii, Masaki Fukushima, Naoya Inoue, John N. Matthews, Shoichi Ogio, Hiroyuki Sagawa, Akimichi Taketa, Masato Takita, Stan B. Thomas, Hisao Tokuno, Yoshiki Tsunesada, Shigeharu Udo, Lawrence R. Wiencke

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 7.5%. An additional uncertainty of 3.7% is introduced by the transport of the calibrated PMTs from the laboratory to the TA experimental site.

View original: http://arxiv.org/abs/1202.1934