Study on the efficiency of the underground muon detectors in YangBaJing Hybrid Array
| Autor: | Zhen Wang, Cheng Liu, Yi-Qing Guo, Youliang Feng, Yi Zhang, Hongbo Hu, JIancheng He, Yuhua Yao, Danzeng Luobu, Tian-Lu Chen |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
Nuclear and High Energy Physics Muon Physics::Instrumentation and Detectors Astrophysics::High Energy Astrophysical Phenomena Measure (physics) Cosmic ray Stability (probability) Nuclear physics Acceleration Nuclear Energy and Engineering Hybrid array Physics::Accelerator Physics High Energy Physics::Experiment Energy (signal processing) Muon detector |
| Zdroj: | Radiation Detection Technology and Methods. 3 |
| ISSN: | 2509-9949 2509-9930 |
| Popis: | The $$\gamma $$ -ray astronomy at 100 TeV is important to unravel the puzzles related to the origin and acceleration of the Galactic cosmic rays up to PeV energy. The YangBaJing Hybrid Array (YBJ-HA), about 2% the scale of LHAASO-KM2A, is such a kind of detection instrument capable of detecting 100 TeV $$\gamma $$ -rays. And the muon detection efficiency stability of the MD array in YBJ-HA is crucial for high quality $$\gamma $$ -ray observation. To measure and monitor the muon detection efficiency, we develop a method in this work. We develop a muon bundle method to measure and monitor the efficiency of each muon detector. In this method, muon detection efficiency of the target MD unit is calculated based on the surrounding MD units and the MC simulation. The average actual muon detection efficiency of the 16 MD units is up to 83.4% during 4 years’ observation. The muon detection efficiency of each MD unit is found to be stable during 4 years’ operation. In the future, a similar method may be applicable to the muon detection efficiency study for LHAASO. |
| Databáze: | OpenAIRE |
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