The MJX detectors were developed for rare-particle detection experiments like the Majorana search for neutrinoless double beta decay. The MJX detectors are liquid-nitrogen cooled germanium detectors having a very small (~ 1 pF) p+ hole-collecting electrode.
PHDs Co. developed the MJX detectors in collaboration with physicists at Pacific Northwest, Los Alamos, and Oak Ridge National Laboratories. The development was supported by DOE Office of Nuclear Physics SBIR [DE-FG02-05ER84157].