  LHAASO is expected to be the most sensitive project to face the open problems
in Galactic cosmic ray physics through a combined study of photon- and charged
particle-induced extensive air showers in the energy range 10$^{11}$ -
10$^{17}$ eV. This new generation multi-component experiment will be able of
continuously surveying the gamma-ray sky for steady and transient sources from
about 100 GeV to PeV energies, thus opening for the first time the
10$^2$--10$^3$ TeV range to the direct observations of the high energy cosmic
ray sources.
  In addition, the different observables (electronic, muonic and Cherenkov
components) that will be measured in LHAASO will allow the study of the origin,
acceleration and propagation of the radiation through a measurement of energy
spectrum, elemental composition and anisotropy with unprecedented resolution.
The installation of the experiment started at very high altitude in China
(Daocheng site, Sichuan province, 4410 m a.s.l.). The commissioning of one
fourth of the detector will be implemented in 2018. The completion of the
installation is expected by the end of 2021.
