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11th International Workshop on Very High Energy Particle Astronomy (VHEPA 2024)

17-19 October 2024
Asia/Dili timezone

Determining muon multiplicity at the GRAPES-3 experiment using pulse width for measuremets near the cosmic ray knee

Not scheduled
20m

Speaker

Ronald Scaria (Indian Institute of Technology Indore)

Description

It has long been observed that extensive air showers (EAS) produced by heavier mass primary cosmic rays (PCR) contained more muons than those created by lighter ones. As a result, muon multiplicities in EAS have been used as an indicator for estimating the PCR
composition. This points towards the importance of an accurate determination of the muon
multiplicity in an EAS. The GRAPES-3 experiment located at Ooty, Tamil Nadu samples the
muon content above 1 GeV energy in an EAS using a large area muon telescope. So far,
counting hits in the proportional counters has been used for the PCR composition studies.
Here, we present a new method to calculate the number of muons in an EAS based on the energy
deposited by particles in the proportional counters which is stored as pulse width, recorded
beside the hit information. The preliminary simulation results of the analysis show that the
dynamic range of detecting muons is increased by two orders of magnitude. Such an increase in the dynamic range is important to determine the PCR composition accurately beyond the Knee region (\sim3 PeV) of the cosmic ray spectrum.

Primary authors

Ronald Scaria (Indian Institute of Technology Indore) Dr Medha Chakraborty (Tata Institute of Fundamental Research) Prof. S. R. Dugad (Tata Institute of Fundamental Research) Prof. S. K. Gupta (Tata Institute of Fundamental Research) Dr B. Hariharan (Tata Institute of Fundamental Research) Prof. Y. Hayashi (Graduate School of Science, Osaka City University) Mr P. Jagadeesan (Tata Institute of Fundamental Research) Mr Atul Jain (Tata Institute of Fundamental Research) Prof. Pankaj Jain (Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh-208016, India) Prof. S. Kawakami (Graduate School of Science, Osaka City University) Dr H. Kojima (College of Engineering, Chubu University) Prof. S. Mahapatra (Utkal University) Pravata Mohanty (Tata Institute of Fundamental Research) Prof. Y. Muraki (Institute for Space-Earth Environmental Research, Nagoya University) Dr P. K. Nayak (Tata Institute of Fundamental Research) Toshiyuki Nonaka (Institute for Cosmic Ray Research) Prof. A. Oshima (College of Engineering, Chubu University) Dr Diptiranjan Pattanaik (Tata Institute of Fundamental Research & Utkal University) Dr Girija Sankar Pradhan (Indian Institute of Technology Indore) Dr M. Rameez (Tata Institute of Fundamental Research) Mr K. Ramesh (Tata Institute of Fundamental Research) Mr L. V. Reddy (Tata Institute of Fundamental Research) Prof. Raghunath Sahoo (Indian Institute of Technology Indore) Prof. S. Shibata (College of Engineering, Chubu University) Fahim Varsi (Karlsruhe Institute of Technology) Dr Meeran Zuberi (CERN)

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