Cryogenic Dark Matter Search: Status and Results

Abstract:

Cryogenic Dark Matter Search (CDMS) experiment is designed to search for Dark Matter in the form of Weakly Interacting Massive Particles (WIMPs). To achieve low radioactive background levels, CDMS is operated at a deep site at the Soudan Underground Laboratory, with agressive active and passive shielding. Furthermore, CDMS detectors are based on Ge or Si substrates with ionization and phonon sensors, allowing for a very effective event-by-event rejection of the dominant photon and electron background. The data CDMS acquired in 2003/2004 has led to the world's most sensitive upper limit on the WIMP-nucleon elastic scattering cross-section. I will discuss the current status of the CDMS experiment and its most recent results.