Primary Energy Estimation of Cosmic Rays Measured by COREA Prototype System

Abstract

The COREA(COsmic ray Reaserch and Education Array) collaboration has installed a prototype array of plastic scintillation systems at Kyeonggibuk Science High School and Hansung Science High School to study cosmic ray events. In each site, three detector stations are installed, where each station cosists of four scintillation detectors. Using coincidence technique based on GPS time information, high-energy air showers are detected. In this presentation, we report efficiency measurement as well as current progress of estimating the primary energy of the cosmic ray showers measured by our system.