July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Zenithal dependence of muon intensity

Jul 30, 2015, 3:30 PM
Amazon Foyer (World Forum)

Amazon Foyer

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 238
Poster contribution CR-EX Poster 1 CR


Ms Monica Nunes (UNICAMP)


The zenital dependence of muon intensity which reaches the earth's surface is well known as proportional to cos^n (theta). Generally, for practical purposes and simplicity in calculations, n is taken as 2. However, compilations of measurements show dependence on the geographical location of the experiments as well as the muons energy range. Since analytical solutions appear to be increasingly less necessary because of the higher accessibility to low cost computational power, accurate and precise determination of the value of the exponent n, under different conditions, can be useful in the necessary calculations to estimate signals and backgrounds, either for terrestrial and underground experiments. In this work we discuss a method for measuring n using a simple muon telescope and the results obtained for measurements taken at Campinas (SP), Brazil (22^o 54' W, -41^o 03', 854 m asl) and at Fermilab - Batavia (IL), United States (41.8319∘𝑁, 88.2572∘ 𝑊, 220 m). After validation of the method, we intend to extend the measurements for more geographic locations due to the simplicity of the method, and thus collect more values ​​of n that currently exist in compilations of general data on cosmic rays.
Registration number following "ICRC2015-I/" 892
Collaboration -- not specified --

Primary author

Ms Monica Nunes (UNICAMP)


Mr Bruno Daniel (UNICAMP) Dr Ernesto Kemp (UNICAMP) Mr Lucas Mendes Santos (UNICAMP) Mr Thales Vieira (UNICAMP)

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