Speaker
Description
The ArDM experiment is a tonne-scale liquid argon detector for direct WIMPs dark matter search which has been running in dual-phase mode since Dec. 2017. Out of its 1.5 tonne total liquid argon volume, 650 kg constitutes the active target of the dual-phase time projection chamber. The scintillation (S1) and ionization (S2) signals has been successfully detected. The detector response and performance have been studied and compared with single-phase operation results. The S1 and S2 signals have been categorized by the boosted-decision-tree-based method. The S1-S2 matching algorithm has been developed and validated by MC simulation. The event 3D position has been reconstructed from the PMT hit pattern and the electron drift time. In addition, the neutron multiple-scattering has been measured.
