Cosmic ray muon study with the NEVOD-DECOR experiment

6th School on Cosmic Rays and Astrophysics

Saavedra San Martin, Oscar^1

Istituto Nazionale di Astrofisica, INAF, Italy^1

关键词: Cosmic ray energies;    Cosmic ray spectra;    Cosmic-ray muons;    Engineering physics;    High energy muon;    High multiplicity;    Monte Carlo model;    Moscow , Russia;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/866/1/012010/pdf
DOI  :  10.1088/1742-6596/866/1/012010

来源: IOP

【 摘 要 】

The experiment NEVOV-DECOR, which is desinged to study the cosmic muons at very inclined directions, is running under the collaboration of the Moscow Engineering Physics Institute, Moscow, Russia, and the Instituto Nazionale di Astrofisica and the Dipartimento di Fisica, Universita di Torino, Italy. The main purpose of this experiment is to study the characteristics of the high multiplicity muons in muon bundles and their angular distributions. The result has shown the observation of the second knee at 1017eV in the primary cosmic ray spectrum. In addition, we found that the number of high energy muons in EAS is more than 30% of what is predicted by the Monte Carlo models. This effect was found also by other experiments like Auger, but at primary cosmic ray energies higher than 1018eV. We will present and discuss the main results of these investigations.