Introduction of the CDEX experiment

Understand

Weakly Interacting Massive Particles (WIMPs) are the candidates of dark matter in our universe.

• Up to now any direct interaction of WIMP with nuclei has not been observed yet.
• The exclusion limits of the spin-independent cross section of WIMP-nucleon which have been experimentally obtained is about 10^{-7}pb at high mass region and only 10^{-5}pb} at low mass region.
• China Jin-Ping underground laboratory CJPL is the deepest underground lab in the world and provides a very promising environment for direct observation of dark matter.