Dark Matter Searches at Coherent CAPTAIN-Mills

Coherent CAPTAIN-Mills (CCM) experiment is a 10 ton Liquid Argon scintillation detector experiment located at the Los Alamos National Laboratory (LANL). The Los Alamos Neutron Science Center (LANSCE) provides an 800 MeV proton beam on a tungsten target which is a copious source of neutrinos from stopped pions, as well as, possibly, new particles belonging to the Dark Sector of particle physics with masses in the range of keV to MeV. This sub-GeV Dark Matter then undergoes both elastic and inelastic scattering off the Ar nuclei and produces scintillation light. The CCM detector is equipped with photomultiplier tubes (PMTs) to capture the scintillation light. A prototype detector instrumented with 120 PMTs, CCM120 operated between 2018 and 2019, demonstrating the potential of such a detector for the search of Sub-GeV dark matter. The upgraded CCM200 detector, with 200 PMTs and improved shielding is now taking beam data. In this talk the status of the experiment, as well as results from CCM200 for elastic and inelastic scattering of dark matter with LAr and expected sensitivity to new physics with CCM200 will be presented.