, the projected sensitivity of CCD silicon detectors operating with an exposure of $\mathcal{E}=0$ kg-year and a low dark current rate of $\Gamma=0\times00^{-0}$ counts/pixel/day is comparable with the one of a HV germanium detector operating with an exposure of $\mathcal{E}=00$ kg-year. Below $m_\chi=00$ MeV, 