LHAASO (Large High Altitude Air Shower Observertory)
The LHAASO  plans to build a hybrid extensive air shower (EAS) array with an area of about 1 km2 at an altitude of 4410m a.s.l. in Haizi Mountain, Daocheng County, Sichuan Province. The LHAASO detector consists of an EAS array covering an area of 1.3 km2 (KM2A), 78,000m2 water Cherenkov detector array (WCDA) and 12 wide-field air Cherenkov/fluorescence telescopes (WFCTA),
The KM2A detector array need to be synchronized via white rabbit network upto 500ps(rms) accuracy. Over 400 L3 WRS are installed over the field while another 40 L2 and L1 WRS are installed in a auxiliary room.