Absolute Calibration of the Auger Fluorescence Detectors
Astrophysics
2019-08-14 v1
Abstract
Absolute calibration of the Pierre Auger Observatory fluorescence detectors uses a light source at the telescope aperture. The technique accounts for the ombined effects of all detector components in a single measurement. The calibrated 2.5 m diameter light source fills the aperture, providing uniform illumination to each pixel. The known flux from the light source and the response of the acquisition system give the required calibration for each pixel. In the lab, light source uniformity is studied using CCD images and the intensity is measured relative to NIST-calibrated photodiodes. Overall uncertainties are presently 12%, and are dominated by systematics.
Keywords
Cite
@article{arxiv.astro-ph/0507347,
title = {Absolute Calibration of the Auger Fluorescence Detectors},
author = {P. Bauleo and J. Brack and L. Garrard and J. Harton and R. Knapik and R. Meyhandan and A. C. Rovero and A. Tamashiro and D. Warner},
journal= {arXiv preprint arXiv:astro-ph/0507347},
year = {2019}
}
Comments
4 pages, 3 figure. Submitted to the 29th ICRC, Pune, India