Latest results from the CDMS-II cold dark matter search

P. L. Brink, D. S. Akerib, M. S. Armel-Funkhouser, M. J. Attisha, C. N. Bailey, L. Baudis, D. A. Bauer, R. Bunker, B. Cabrera, D. O. Caldwell, C. L. Chang, M. B. Crisler, P. Cushman, M. Daal, R. Dixon, M. R. Dragowsky, D. D. Driscoll, L. Duong, R. Ferril, J. FilippiniR. J. Gaitskell, R. Hennings-Yeomans, D. Holmgren, M. E. Huber, S. Kamat, A. Lu, R. Mahapatra, V. Mandic, J. M. Martinis, P. Meunier, N. Mirabolfathi, H. Nelson, R. Nelson, R. W. Ogburn, T. A. Perera, E. Ramberg, A. Reisetter, R. R. Ross, T. Saab, B. Sadoulet, J. Sander, C. Savage, R. W. Schnee, D. N. Seitz, B. Serfass, K. M. Sundqvist, J. P.F. Thompson, G. Wang, S. Yellin, B. A. Young

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The CDMS-II collaboration's Cold Dark Matter search presently sets the most competitive exclusion limit in the world for the direct detection of the hypothesized Weakly Interacting Massive Particles (WIMPs) that constitute the cold dark matter of the Universe. Our experiment utilizes Ge (and Si) crystals as the target detectors, each with a mass of 250 g (100 g) and cooled to 30 mK. To eliminate natural radioactive sources as background the experiment is conducted in a well-shielded environment in the Soudan Mine, Minnesota, and has been operating for the last two years. To aid in the identification of a possible WIMP-candidate event, the detectors are designed to measure both the ionization and athermal phonon signals produced by each candidate event. The athermal phonon signal is measured using superconducting aluminum films on the crystal surface connected to tungsten transition edge sensors. The latest WIMP-search results from Soudan will be presented, along with projections for the future.

Original languageEnglish (US)
Title of host publicationLOW TEMPERATURE PHYSICS
Subtitle of host publication24th International Conference on Low Temperature Physics - LT24
Pages1617-1620
Number of pages4
DOIs
StatePublished - 2006
EventLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States
Duration: Aug 10 2006Oct 17 2006

Publication series

NameAIP Conference Proceedings
Volume850
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
CountryUnited States
CityOrlando, FL
Period8/10/0610/17/06

Keywords

  • Cold dark matter
  • Cryogenic detectors
  • Underground astrophysics

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