12–23 Jul 2021
Online
Europe/Berlin timezone

Vetoing the high energy showers in the GRAPES-3 experiment whose cores lie outside the array

16 Jul 2021, 18:00
1h 30m
TBA

TBA

Poster CRI | Cosmic Ray Indirect Discussion

Speaker

Medha Chakraborty (Tata Institute of Fundamental Research)

Description

The GRAPES-3 experiment located at Ooty, India, consists of an array of 400 plastic scintillators which records the particle densities and relative arrival times of secondaries in an air shower. The particle densities recorded in individual detectors are then fitted by the well known NKG function to obtain the shower parameters, namely the shower core, age and size. High energy showers with cores simulated using CORSIKA with true cores far away from the array center are also capable of triggering the array. Some of those showers are mis-reconstructed such that the cores appear to lie within the array, leading to contamination which can affect the measurement of the energy spectrum of cosmic rays. To reduce this contamination, we have devised a selection technique employing several shower properties, the details of which will be presented here.

Keywords

Shower core; GRAPES; EAS;

Subcategory Experimental Results
Collaboration other (fill field below)
other Collaboration GRAPES-3

Primary authors

Medha Chakraborty (Tata Institute of Fundamental Research) for the GRAPES-3 collaboration

Presentation materials