Machine learning approach to identify cores of EAS observed by the GRAPES-3 experiment

6 Jul 2022, 15:15
15m
Presentation Track 1. Machine Learning in Particle Astrophysics and High Energy Physics Session 1. ML in Particle Astrophysics and High Energy Physics

Speaker

Medha Chakraborty (Tata Institute of Fundamental Research)

Description

The GRAPES-3 experiment located in Ooty consists of a dense array of 400 plastic scintillator detectors spread over an area of 25,000 $m^2$ and a large area (560 $m^2$) tracking muon telescope. Everyday, the array records about 3 million showers in the energy range of 1 TeV - 10 PeV induced by the interaction of primary cosmic rays in the atmosphere. These showers are reconstructed in order to find several shower parameters such as shower core, size, and age. High-energy showers landing far away from the array often trigger the array and are found to have their reconstructed cores within the array even though their true cores lie outside, due to reconstruction of partial information. These showers contaminate and lead to an inaccurate measurement of energy spectrum and composition. Such showers can be removed by applying quality cuts on various shower parameters, manually as well as with machine learning approach. The improvements achieved by the use of machine learning will be presented.

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Primary authors

Medha Chakraborty (Tata Institute of Fundamental Research) S. Ahmad (Aligarh Muslim University, Aligarh 202002, India) A. Chandra (Aligarh Muslim University, Aligarh 202002, India) S.R. Dugad (TIFR, Mumbai) U.D. Goswami (Dibrugarh University, Dibrugarh 786004, India) S.K. Gupta (TIFR, Mumbai) Hari Haran Balakrishnan (Tata Institute of Fundamental Research) Y. Hayashi (Graduate School of Science, Osaka City University, Osaka 558-8585, Japan) P. Jagadeesan (TIFR, Mumbai) A. Jain (TIFR, Mumbai) P. Jain (IIT Kanpur) S. Kawakami (Graduate School of Science, Osaka City University, Osaka 558-8585, Japan) H. Kojima (College of Engineering, Chubu University, Kasugai, Aichi 487-8501, Japan) S. Mahapatra (Utkal University, Bhubaneshwar 751004, India) P.K. Mohanty (TIFR, Mumbai) R. Moharana (Indian Institute of Technology Jodhpur, Jodhpur 342037, India) Y. Muraki (Institute for Space-Earth Environmental Research, Nagoya University, Nagoya 464-8601, Japan) P.K. Nayak (TIFR, Mumbai) T. Nonaka (Institute for Cosmic Ray Research, Tokyo University, Kashiwa, Chiba 277-8582, Japan) A. Oshima (College of Engineering, Chubu University, Kasugai, Aichi 487-8501, Japan) B.P. Pant (IIT Jodhpur, India) S. Paul (TIFR, Mumbai) Diptiranjan Pattanaik (Tata Institute of Fundamental Research, Mumbai) G.S. Pradhan (IIT Indore, India) M. Rameez (TIFR, Mumbai) K. Ramesh (TIFR, Mumbai) L.V. Reddy (TIFR, Mumbai) R. Sahoo (IIT Indore, India) R. Scaria (IIT Indore, India) S. Shibata (College of Engineering, Chubu University, Kasugai, Aichi 487-8501, Japan) K. Tanaka (Graduate School of Information Sciences, Hiroshima City University, Hiroshima 731-3194, Japan) F. Varsi (IIT Kanpur, India) M. Zuberi (TIFR, Mumbai)

Presentation Materials