Primary Energy Measurement with EAS Cherenkov Light: Experiment QUEST and CORSIKA Simulation
E.Korosteleva, L.Kuzmichev, V.Prosin (Scobeltsyn Institute of Nuclear, Physics, MSU, Moscow, Russia), B.Lubsandorzhiev (Institute of Nuclear, Research, RAS, Moscow, Russia), Eas-Top Collaboration (INFN, IFSI,, Universita' Torino, Italy)
TL;DR
This paper introduces a novel, mass-independent primary energy measurement method for extensive air showers using Cherenkov light analysis and CORSIKA simulations, providing an absolute energy calibration.
Contribution
The paper presents a new energy measurement technique combining shower size and Cherenkov light distribution analysis, validated through simulations and compared with classical methods.
Findings
The new method is mass independent.
Achieved an absolute energy calibration.
Validated through CORSIKA/QGSJET simulations.
Abstract
A new primary mass independent method of energy measurement has been developed by exploiting: a) the joint analysis of the shower size, obtained by EAS-TOP, and of the EAS atmospheric Cherenkov light lateral distribution, obtained by the QUEST array, and b) simulations based on the CORSIKA/QGSJET code. The method is based on the correlation between the size/energy ratio and the steepness of Cherenkov light lateral distribution and has been compared with a "classical" one based on the Cherenkov light flux at a fixed distance (175 m) from the EAS core. An absolute energy calibration of the EAS atmospheric Cherenkov light flux has been obtained.
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