A WIMP detector with two-phase xenon

We describe an important new technique to search for WIMPs. This technique employs a method of background discrimination using double phase xenon as detector target. We describe the construction of a two-phase, I-kg xenon delector. The detector will be installed at the underground laboratory in the Mt. Blanc tunnel, which provides a low background rale. A comparison between the sensitivity curve of our detector and the theoretical events limit from SUSY calculations is presented.