ED: Measuring the secondary electromagnetic particles in the EAS. The scintillation light generated by charged particles in the plastic scintillator is collected by wavelength-shift fibers, conducted to a photomultiplier tube (PMT) and converted into electrical signals. The effective area of each ED is 1 m².

MD:Measuring the muon content of the EAS. A water bag containing ultra-pure water is placed in a concrete tank with a diameter of 6.8 meters and a height of 1.2 meters, and a PMT is installed at the top center of the water bag to collect the Cherenkov light generated in the water by muons that enter the tank.

WCDA:Measuring charged particles and photons in the EAS. It is composed of 3 adjacent large ponds (two with a dimension 150 m × 150 m, and one with a dimension of 300 m × 110 m), and the waterdepth is 4.5 m. Ponds are sub-divided into 3120 cells in size of 5 m × 5 m, each provided with 2 PMTs for collecting the Cherenkov light generated in the water by charged particles in the EAS.

WFCTA:Measuring the Cherenkov lights generated in the air by EAS. Each telescope consists of a reflector made of 5 m²spherical aluminized mirror and a silicon photo multipliers (SiPMs) camera with 32 × 32 pixels.The field of view of a telescope is 16° × 16°, and the pixel size of the camera is 0.5° × 0.5°.