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Measuring the attenuation length of muon number in the air shower with muon detectors of 3/4 LHAASO array
by Xiaoting Feng, Hengying Zhang, Cunfeng Feng, Lingling Ma
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Submission summary
| Authors (as registered SciPost users): | Xiaoting Feng |
| Submission information | |
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| Preprint Link: | scipost_202207_00038v1 (pdf) |
| Date submitted: | 2022-07-26 05:32 |
| Submitted by: | Feng, Xiaoting |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 21st International Symposium on Very High Energy Cosmic Ray Interactions (ISVHECRI2022) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Experimental |
Abstract
LHAASO KM2A consists of 5915 scintillation detectors and 1188 muon detectors, and the muon detectors cover 4% area of the whole array with 30 m spacing. The muon number of air shower events, with very high energy, is investigated with the data recorded by muon detector of the 3/4 LHAASO array in 2021. The attenuation length of muon number in the air shower is measured by fitting the muon number with constant flux in various zenith angles, based on the constant intensity cut method. The variation of the attenuation length as shower energy from hundreds TeV to tens PeV is presented. The results of simulation also is presented for comparing.
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