Aachen 2019 – wissenschaftliches Programm

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AKPIK: Arbeitskreis Physik, moderne Informationstechnologie und Künstliche Intelligenz

AKPIK 3: Machine-learning methods and computing in astroparticle physics

AKPIK 3.11: Vortrag

Mittwoch, 27. März 2019, 17:40–17:50, H06

Resistive Plate Chamber (RPC) tests as muon detector — •Victor Barbosa Martins¹, Vitor de Souza², Luis Lopes³, and Sofia Andringa⁴ — ¹IFSC- USP, São Carlos, Brasilien, now at DESY, Zeuthen, Deutschland — ²IFSC - USP, São Carlos, Brasilien — ³LIP, Coimbra, Portugal — ⁴LIP, Lissabon, Portugal

Cosmic rays are the most energetic particles in the universe. Their production, propagation, and detection are objects of numerous studies. Surface detectors aim to identify particles from extensive air showers (EAS), which are the result of cosmic rays interacting with the atmosphere. Resistive Plate Chambers (RPCs) have shown to be a suitable muon detector to be integrated into the Pierre Auger Observatory. Data from RPCs by the Pierre Auger Collaboration in Coimbra (POR) were analyzed. The detector efficiency to muons was calculated and is approximately 88%, which is in good agreement with the values quoted in the literature. Direction maps were built to investigate the muon incoming direction and the quantity of matter traversed by the muons. The dependence of the muon flux on the zenith angle was calculated and compared with results from simulations. A square cosine dependence is expected, though it is seen that the building structure has enough matter to block some of the incident muons and alter the dependence curve. The total muon flux was estimated based on the detector efficiencies and solid angle and then compared with the literature. The results show an absorption by the building of approximately 77% of the incident muons.