# Measurement of Cosmic Muon angular distribution and vertical integrated flux by 2m$\times$2m RPC stack at IICHEP-Madurai

## TL;DR

This study measures the angular distribution and vertical flux of cosmic muons using a 2m x 2m RPC detector array at Madurai, providing data relevant for underground neutrino experiments and detector performance evaluation.

## Contribution

It presents the first detailed measurement of cosmic muon angular distribution and flux using large-scale RPCs in India, aiding neutrino experiment planning and detector stability assessment.

## Key findings

- Muon angular distribution characterized at Madurai location.
- Vertical muon flux quantified at approximately 160m altitude.
- RPC performance evaluated over long-term operation.

## Abstract

The 50 \,kton\, INO-ICAL is a proposed underground high energy physics experiment at Theni, India ($9^{\circ}57'N$, $77^{\circ}16'E$) to study the neutrino oscillation parameters using atmospheric neutrinos. The Resistive Plate Chamber (RPC) has been chosen as the active detector element for the ICAL detector. An experimental setup consisting of 12 layers of glass RPCs of size 2\,m\,$\times$\,2\,m has been built at IICHEP, Madurai to study the long term stability and performance of RPCs which are produced on a large scale in Indian industry. In this paper, the studies on the performance of RPCs are presented along with the angular distribution of muons at Madurai ($9^{\circ}56'N,78^{\circ}00'E$ and Altitude $\approx$\,160\,m from sea level).