Detecting cold dark-matter candidates
We consider the use of superheated superconducting colloids as detectors of weakly interacting galactic-halo candidate particles (e.g., photinos, massive neutrinos, and scalar neutrinos). We discuss realistic models for the detector and for the galactic halo. We show that the expected count rate (roughly-equal10/sup 3/ count/day for scalar and massive neutrinos) exceeds the expected background by several orders of magnitude. For photinos, we expect roughly-equal1 count/day, more than 100 times the predicted background rate. We find that if the detector temperature is maintained at 50 mK and using SQUID electronic read out with the system, noise is reduced below 5 x 10/sup -4/ flux quanta, particles with mass as low as 2 GeV can be detected. Any particle capable of resolving the solar-neutrino problem by altering energy transport in the Sun can be detected. We show that Earth's motion around the Sun can produce a significant annual modulation in the signal.
- Research Organization:
- Max-Planck-Institut fuer Physik und Astrophysik, 8046 Garching, West Germany and Department of Astronomy, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138
- OSTI ID:
- 5814630
- Journal Information:
- Phys. Rev. D; (United States), Vol. 33:12
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COSMIC NEUTRINOS
NEUTRINO DETECTION
SUPERCONDUCTING COLLOID DETECTORS
USES
CROSS SECTIONS
ELASTIC SCATTERING
GALAXIES
RADIATION DETECTORS
SUPERSYMMETRY
WEAK INTERACTIONS
BASIC INTERACTIONS
COSMIC RADIATION
DETECTION
ELEMENTARY PARTICLES
FERMIONS
INTERACTIONS
IONIZING RADIATIONS
LEPTONS
MASSLESS PARTICLES
MEASURING INSTRUMENTS
NEUTRINOS
RADIATION DETECTION
RADIATIONS
SCATTERING
SUPERCONDUCTING DEVICES
SYMMETRY
440104* - Radiation Instrumentation- High Energy Physics Instrumentation