Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..222..471w&link_type=abstract
In: After the first three minutes; Proceedings of the 1st Astrophysics Workshop, Univ. of Maryland, College Park, Oct. 15-17, 19
Astronomy and Astrophysics
Astrophysics
2
Galactic Halos, Particle Mass, Phonons, Radiation Detectors, Weak Interactions (Field Theory), Astronomical Spectroscopy, Cryogenic Equipment, Dark Matter
Scientific paper
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.
Barnes David P.
Cummings Alan
Emes John
Giraud-Heraud Yannick
Haller Elmar
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