Internal Calibration of the PandaX-II Detector with Radon Gaseous Sources

Wenbo Ma, Abdusalam Abdukerim, Zihao Bo +65

We have developed a low-energy electron recoil (ER) calibration method with ${}^{220}$Rn for the PandaX-II detector. ${}^{220}$Rn, emanated from natural thorium compounds, was fed into…