Tibet$^\prime$s Window on Primordial Gravitational Waves
  As an essential part of Chinaâs Gravitational Waves Program, the Ali CMB
Polarization Telescope (AliCPT) is a ground-based experiment aiming at the
Primordial Gravitational Waves (PGWs) by measuring B-mode polarization of
Cosmic Microwave Background (CMB). First proposed in 2014 and currently in fast
construction phase, AliCPT is Chinaâs first CMB project that plans for
commissioning in 2019. Led by the Institute of High Energy Physics (IHEP) under
the Chinese Academy of Sciences (CAS), the project is a worldwide collaboration
of more than fifteen universities and research institutes. Ali CMB Project is
briefly introduced.
