Measuring the UHE cosmic-ray composition with tracking detectors in air shower arrays
Abstract
Measuring the angles of muons and electrons in air showers is proposed as a method for studying the primary cosmic-ray mass composition near the knee of the cosmic-ray energy spectrum at a few eV. Conventional tracking detectors at existing air shower arrays could serve this purpose, like the CRT detectors at the HEGRA array. When the average radial muon angles are examined as a function of shower core distance, the experimental resolution can be very well calibrated from the tangential angle distribution. The method is particularly promising for measuring changes in the average mass number of the primary cosmic rays with energy. The method is described and experimental and theoretical constraints are discussed.
Keywords
Cite
@article{arxiv.astro-ph/9605177,
title = {Measuring the UHE cosmic-ray composition with tracking detectors in air shower arrays},
author = {Konrad Bernlöhr},
journal= {arXiv preprint arXiv:astro-ph/9605177},
year = {2009}
}
Comments
14 pages, 7 figures included. Accepted by Astroparticle Physics. This paper and descriptions of the CRT detectors are also available via http://eu6.mpi-hd.mpg.de/CRT/CRT-eprints.html