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arXiv · hep-ex/9807009

Measurement of the energy spectrum of underground muons at Gran Sasso with a transition radiation detector

The MACRO Collaboration·M. Ambrosio et al
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Abstract

We have measured directly the residual energy of cosmic ray muons crossing the MACRO detector at the Gran Sasso Laboratory. For this measurement we have used a transition radiation detector consisting of three identical modules, each of about 12 m^2 area, operating in the energy region from 100 GeV to 1 TeV. The results presented here were obtained with the first module collecting data for more than two years. The average single muon energy is found to be 320 +/- 4 (stat.) +/- 11 (syst.) GeV in the rock depth range 3000-6500 hg/cm^2. The results are in agreement with calculations of the energy loss of muons in the rock above the detector.

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The MACRO Collaboration, M. Ambrosio et al. 1998-07-09. Measurement of the energy spectrum of underground muons at Gran Sasso with a transition radiation detector. https://doi.org/10.1016/s0927-6505(98)00037-1

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