Skipper Charge-Coupled Device for Low-Energy-Threshold Particle Experiments above Ground

We present experimental results using a single-electron resolution skipper CCD running above ground level to demonstrate the potential of this technology for its use in reactor neutrino observations and other low-energy particle-interaction experiments. Operating conditions event-selection criteria are provided decouple most background rate at low energies. The majority comes from interactions inactive silicon surrounding active detector volume that ends up readout register sensor. Our final compared with low-threshold technologies showing good control ionization energies down five electron-hole pairs. This demonstrates proves be among best options measure weakly interacting particles level.