Observation of EAS Core with the Small Scintillation Detector at Taro

摘要

We have observed the core structure of extensive air showers(EAS) that primary energy above 10~(16)eV.To measure the more detail and the correct density of the incident particles near EAS core,we installed 100 small scintillation detectors (using plastic scintillator :15cm x 15cm x 2.5cm) that are placed on a lattice 10 x 10,and 40cm separation,at Taro Cosmic Ray Laboratory,at autumn 2002.We report the detail of the small detector,and preliminary results.