The DMTPC detector
  Directional detection of Dark Matter allows for unambiguous direct detection of WIMPs as well as discrimination between various Dark Matter models in our galaxy. The DMTPC detector is a low-pressure TPC with optical readout designed for directional direct detection of WIMPs. By using CF4 gas as the active material, the detector also has excellent sensitivity to spin-dependent interactions of Dark Matter on protons. 
G. Sciolla, J. Battat, T. Caldwell, B. Cornell, D. Dujmic, P. Fisher,   S. Henderson, R. Lanza, A. Lee, J. Lopez, A. Kaboth,...