: To mitigate cosmogenic activation (radioactivity caused by surface exposure to cosmic rays), the collaboration is exploring the electroforming of copper components directly underground [13, 14]. Recent Research Findings
The primary goal of CDEX is to identify the nature of dark matter, which is believed to account for approximately 85% of the matter in the universe but has yet to be directly observed [11, 16]. Key scientific objectives include: : To mitigate cosmogenic activation (radioactivity caused by
The project has progressed through several iterative stages, each increasing in scale and sensitivity: : A 10-kg scale array of germanium detectors
: Studies on zero boil-off liquid argon systems have demonstrated the ability to maintain the stable, low-temperature environments necessary for long-term detector operation [5.1]. : To mitigate cosmogenic activation (radioactivity caused by
: A 10-kg scale array of germanium detectors operated within a liquid argon (LAr) anti-Compton active shielding system [5.2, 13].
: Systems using liquid argon (LAr) act as an "anti-coincidence" veto, ruling out background radiation that could mimic dark matter signals [5.1, 5.2].