Speaker
Summary
The NEWS-G (New Experiments With Spheres – Gas) collaboration searches for light dark matter using spherical proportional counters (SPCs) located in deep underground laboratories. A choice of light gas targets (Ne, He, H) in conjunction with sub-KeV nuclear recoil thresholds allow for sensitivity to low-mass WIMPs (Weakly Interacting Massive Particles) down to 0.1 GeV/c^2. The recent results from SEDINE, a 60-cm diameter SPC located at LSM (Laboratoire Souterrain de Modane), set new constraints for WIMP masses lighter than 0.6 GeV/c^2 and will be presented. New gas quenching factor measurements obtained at the TUNL (Triangle Universities Nuclear Laboratory) facility and the status and outlook of the 1.4-metre diameter ultra-low background SPC project to be installed at SNOLAB will also be presented.
