33RD INTERNATIONAL COSMIC RAY CONFERENCE, RIO DE JANEIRO 2013 THE ASTROPARTICLE PHYSICS CONFERENCE

Abstract: The study of the elemental composition and spectra of cosmic rays will provide very crucial clues on the origin of these particles. One of LHAASO aims is to study cosmic rays in a large energy range from 50 TeV to a few of 1 EeV with a consistent calibrated energy scale. At low energy region, it can connect with the direct measurement and get the energy scale of the detectors. At high energy region, it should have enough effective area to reach the UHECRs measurement and transfer the energy scale to the detectors. While it’s hard to cover so large energy range by one type detectors, so experiments are divided into three phases which are in charg