Monte Carlo Simulation and measurement of Calibration Neutron Monitor count rate dependence on proximity to water
Issued Date
2023-01-01
Resource Type
ISSN
17426588
eISSN
17426596
Scopus ID
2-s2.0-85181986028
Journal Title
Journal of Physics: Conference Series
Volume
2653
Issue
1
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Physics: Conference Series Vol.2653 No.1 (2023)
Suggested Citation
Duangjai B., Nuntiyakul W., Seripienlert A., Pagwhan A., Chaiwongkhot K., Sáiz A., Ruffolo D., Evenson P. Monte Carlo Simulation and measurement of Calibration Neutron Monitor count rate dependence on proximity to water. Journal of Physics: Conference Series Vol.2653 No.1 (2023). doi:10.1088/1742-6596/2653/1/012018 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/95755
Title
Monte Carlo Simulation and measurement of Calibration Neutron Monitor count rate dependence on proximity to water
Corresponding Author(s)
Other Contributor(s)
Abstract
Due to their global availability, neutron monitors play a crucial role in measuring time variations in the Galactic cosmic ray flux. A portable calibration neutron monitor (CalMon) is useful for intercalibrating various neutron monitors to ensure accurate measurements. A common technique to ensure that the calibration is done in a consistent environment is to place the CalMon at some height above a wide container (such as a portable swimming pool) filled with water. This study investigates the impact of CalMon height and water depth on the count rate ratio relative to a standard 18NM64 count rate recorded nearby (CalMon/18NM64). We compare simulated data from the FLUKA Monte Carlo package to experimental data from [1] to demonstrate the statistical accuracy of our simulation. Using the simulation results, we then extend the study of the proximity-to-water effect on the counting rate. In this work, we present a preliminary empirical model by analyzing the CalMon/18NM64 as a function of CalMon to water distance. Overall, our study enhances understanding of the response of calibration monitors (now often called “mini-neutron monitors”) operated in various locations worldwide, and validates the Monte Carlo techniques used to model the response of the global neutron monitor network.