Simulation Studies of MACE Gamma Ray Telescope : Estimation of Integral Sensitivity, Angular Resolution and Energy Resolution

Discussion timeslot (ZOOM-Meeting): 16. July 2021 - 18:00
ZOOM-Meeting URL: https://icrc2021.desy.de/pf_access_abstracts
Corresponding Session: https://icrc2021-venue.desy.de/channel/Presenter-Forum-1-Evening-All-Categories/48
Abstract:
'The **MACE** (Major Atmospheric Cherenkov Experiment) is an Imaging Atmospheric Cherenkov Telescope (IACT) located in Hanle, India. It has highest altitude of 4270 m among all the IACTs in the world. The high altitude of MACE along with its large reflector having diameter of 21 m is expected to yield wide energy coverage of ~20 GeV to ~20 TeV. We have carried out detailed Monte Carlo simulations of the MACE response to gamma and cosmic ray showers in this energy range for various zenith angles between 0$^{circ}$ to 60$^{circ}$. We estimated the variation of integral flux sensitivity, angular resolution and energy resolution as a function of energy, at various zenith angles. We find that the energy threshold of the MACE remains steady between ~30 GeV to ~50 GeV over the zenith angle range of 0$^{circ}$ to 40$^{circ}$ with integral flux sensitivity of ~2 % Crab. The Angular resolution of the MACE improves from 0.21$^{circ}$ near the energy threshold to 0.07$^{circ}$ at energy of larger 1 TeV for zenith angle range of 0$^{circ}$ to 40$^{circ}$. The expected energy resolution of the MACE in the zenith angle range of 0$^{circ}$ to 40$^{circ}$ varies from ~40% near energy threshold to ~20% for energies above 1 TeV. The MACE will detect Crab like point source within few minutes at all zenith angles, with best detection time of ~80 seconds occurring at zenith angle of 25$^{circ}$.'

Authors: Chinmay Borwankar
Co-Authors: Nilay Bhatt | Subir Bhattacharyya | Mridul Sharma
Collaboration: MACE

Indico-ID: 546
Proceeding URL: https://pos.sissa.it/395/723