| Issue |
EPJ Web Conf.
Volume 301, 2024
XLV Symposium on Nuclear Physics 2024
|
|
|---|---|---|
| Article Number | 04002 | |
| Number of page(s) | 7 | |
| Section | Applications | |
| DOI | https://doi.org/10.1051/epjconf/202430104002 | |
| Published online | 07 August 2024 | |
https://doi.org/10.1051/epjconf/202430104002
Measurement of muon flux variations with scintillators in Mexico City and their correlation to solar activity
1 Facultad de Ciencias, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad de México 04510, México.
2 Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Apartado Postal 70-543, Ciudad de México 04510, México.
* e-mail: diego_montiel@ciencias.unam.mx
** e-mail: leonid.serkin@correo.nucleares.unam.mx
Published online: 7 August 2024
In this work we report the variations of the atmospheric muons flux in Mexico City. The measurements were performed from September to December 2023 at the Institute of Nuclear Sciences of UNAM, located at coordinates 19.32°N 99.18°W with an altitude of 2274 meters above sea level and a cutoff rigidity of 8.24 GV. The experimental setup consists of a pair of scintillators, with dimensions of 50cm x 1m. To compensate for fluctuations in air pressure, we calculate the barometric coefficient using data, which is determined to be -0.21%/mb. The observed muon flux corresponds to 98.3 ± 2.6 m−2 s−1 sr−1 and is consistent with other measurements at the same location. We have identified three variations in the pressure-corrected muon flux that exhibit a pattern similar to those observed by a neutron cosmic ray detector at UNAM. Through an extensive analysis of the publicly available geomagnetic data, we have correlated these variations with a phenomenon known as a Forbush decrease.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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