The Cherenkov radiation is often used for the particle identification (PID) not only in high energy physics experiments. Large area photon detectors have to be equipped making a strong constraint on the photon detectors costs and in the mechanical realisation. The THick Gas Electron Multiplier (THGEM) is derived from the Gas Electron Multiplier (GEM) design, scaling the geometrical parameters and changing the production technology. The THGEM is a good candidate for the Cherenkov imaging applications because of good single photon detection efficiency, intrinsic mechanical stiffness and...