The CRESST dark matter search

We discuss the short- and long-term perspectives of the CRESST (Cryogenic R are Event Search using Superconducting Thermometers) project and present th e current status of the experiment and new results concerning detector deve lopment. In the search for elementary particle dark matter, CRESST is prese ntly the most advanced deep underground, low-background, cryogenic facility . The basic technique involved is to search for WIMPs (Weakly Interacting M assive Particles) by the measurement of nonthermal phonons, as created by W IMP-induced nuclear recoils. Combined with our newly developed method for t he simultaneous measurement of scintillation light, strong background discr imination is possible, resulting in a substantial increase in WIMP detectio n sensitivity. This will allow a test of the reported positive evidence for a WIMP signal by the DAMA Collaboration in the near future. In the long te rm, the present CRESST setup permits the installation of a detector mass up to 100 kg. In contrast to other projects, CRESST technology allows the emp loyment of a large variety of detection materials. This offers a powerful t ool in establishing a WIMP signal and in investigating WIMP properties in t he event of a positive signal. (C) 2000 MAIK "Nauka/Interperiodica".