Investigations of Muon Flux Variations Detected Using Veto Detectors of the Digital Gamma-rays Spectrometer

This paper presents the results of cosmic ray muons flux monitoring registered by a digital gamma-ray spectrometer’s active shield made of five large plastic scintillators. In traditional, i.e., analogue active shields working in anticoincidence mode with germanium detectors, the generated data are...

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Bibliographic Details
Main Authors: Krzysztof Gorzkiewicz, Jerzy W. Mietelski, Zbigniew Ustrnul, Piotr Homola, Renata Kierepko, Ewa Nalichowska, Kamil Brudecki
Format: Article
Language:English
Published: MDPI AG 2021-08-01
Series:Applied Sciences
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Online Access:https://www.mdpi.com/2076-3417/11/17/7916
Description
Summary:This paper presents the results of cosmic ray muons flux monitoring registered by a digital gamma-ray spectrometer’s active shield made of five large plastic scintillators. In traditional, i.e., analogue active shields working in anticoincidence mode with germanium detectors, the generated data are used only as a gating signal and are not stored. However, thanks to digital acquisition applied in designed novel gamma-ray spectrometers enabling offline studies, it has not only become possible to use generated data to reduce the germanium detector background (cosmic rays veto system) but also to initialize long-term monitoring of the muon flux intensity. Furthermore, various analyses methods prove the relevance of the acquired data. Fourier analyses revealed the presence of daily (24 h), near-monthly (27 days) and over bi-monthly (68 days) cycles.
ISSN:2076-3417