Low-energy calibration of XENON1T with an internal $$^{{\textbf {37}}}$$Ar source
Low-energy calibration of XENON1T with an internal $$^{{\textbf {37}}}$$Ar source
A low-energy electronic recoil calibration of XENON1T, a dual-phase xenon time projection chamber, with an internal $^{37}$Ar source was performed. This calibration source features a 35-day half-life and provides two mono-energetic lines at 2.82 keV and 0.27 keV. The photon yield and electron yield at 2.82 keV are measured to …