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Study of the properties of cosmic-rays using the ALICE-LHC detector

EMMA GONZALEZ HERNANDEZ (2021)

"ALICE is one of the four main experiments at the CERN Large Hadron Collider. The

location of ALICE detector allows the study the muonic component of cosmic-rays, since

it is located 52 meters underground with 28 meters of rock above it. The ALICE detector

is able to detect atmospheric muons from extensive air showers, making possible the study

of cosmic-rays physics. At this depth, only atmospheric muons with energies greater

than 16 GeV can reach the detection zone of ALICE. A study of cosmic charge ratio is

presented for events of atmospheric showers collected in 2015, 2016, 2017 and 2018 by the

ALICE experiment. The whole data sample corresponds to 62.5 days of data taking. The

analysis of the multiplicity distribution of atmospheric muons reconstructed by the Time

Projection Chamber (TPC) of ALICE is also presented. The rate of high muon multiplicity

events (number of muons >100) was estimated and compared with the predictions given

by QGSJET-II-04, SIBYLL and EPOS-LHC."

Doctoral thesis

Astrofísica nuclear Erupciones de rayos gamma Geomagnetismo Espectroscopía astronómica Rayos cósmicos CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA