Detecting halo weakly interacting massive particles with a cryogenic phonon detector

Conference · Mon Apr 15 00:00:00 EDT 1991 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:5558319

Wang, N; Barnes, P D; Cummings, A; Emes, J ^[1]; Giraud-Heraud, Y ^[2]; Haller, E E ^[3]; Lange, A; Ross, R; Sadoulet, B; Shutt, T; Stubbs, C ^[4]

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1. Center for Particle Astrophysics and Department of Physics, University of California, Physics Division, Lawrence Berkeley Lab. (United States)
2. Laboratoire de Physique Corpusculaire, College de France, 75231 Paris (France)
3. Center for Paricle Astrophysics and Department of Materials Science and Mineral Engineering, University of California, Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, CA 94720 (United States)
4. Center for Paricle Astrophysics and Department of Physics, University of California, Physics Division, Lawrence Berkeley Lab. (United States)

If dark matter in the halo is made of weakly interacting massive particles (WIMPs), it may be detected with a cryogenic phonon detector. Such a detector must have low energy threshold, high energy resolution, and, more importantly, good background rejection capability. It has been proposed that a good background rejection ratio can be obtained by a simultaneous measurement of phonons and ionization. To test this experimentally, we have built a 60 g Ge detector and have measured simultaneous phonon and ionization signals, each with 4 keV energy resolution. We present a simple estimate of the rejection ratios, and WIMP event rates that may be achieved by such a detector.

• OSTI ID: 5558319
• Report Number(s): CONF-9010268-; CODEN: APCPC
• Journal Information: AIP Conference Proceedings (American Institute of Physics); (United States), Vol. 222:1; Conference: Astrophysics workshop: after the first three minutes, College Park, MD (United States), 15-17 Oct 1990; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
NONLUMINOUS MATTER
DETECTION
AXIONS
BACKGROUND NOISE
ELASTIC SCATTERING
ENERGY DEPENDENCE
ENERGY RESOLUTION
IONIZATION
MONTE CARLO METHOD
PHONONS
THRESHOLD ENERGY
BOSONS
ELEMENTARY PARTICLES
ENERGY
GOLDSTONE BOSONS
MATTER
NOISE
POSTULATED PARTICLES
QUASI PARTICLES
RESOLUTION
SCATTERING
661300* - Other Aspects of Physical Science- (1992-)