Study of Cosmic Ray Events Measured by a Prototype Array of Plastic Scintillation Systems

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. High-energy air showers are detected via coincidence technique by using GPS-measured time information. In this presentation, We will report preliminary study of the results. In particular, we show an analysis of periodic structure of air shower events and its correlations with weather.