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Proceedings Paper

Cryogenic germanium detectors for a weakly interactive massive particle (WIMP) dark-matter search
Author(s): Walter Stockwell; D. Akerib; E. Aubourg; P. D. Barnes; A. Cummings; Angela Da Silva; J. Emes; Sunil Golwala; Eugene E. Haller; S. Margulies; B. Pritychenko; R. R. Ross; Bernard Sadoulet; T. Shutt; Garth Smith; J. Taylor; S. White; B. A. Young
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Paper Abstract

We are preparing an experimental search for weakly interacting massive particle (WIMP) dark matter using cryogenic germanium detectors. These detectors measure both the ionization and phonons produced by particle interactions in the substrate. The ionization measurement uses low drift fields, approximately equals 1 V/cm. The phonon measurement is made using neutron transmutation doped (NTD) germanium thermistors. Simultaneous detection of phonons and ionization allows us to discriminate between electron-recoil and nuclear-recoil events which gives a powerful method for isolating possible WIMP events (nuclear recoils) from background gamma ray events (electron recoils). Recent work on our understanding and optimization of these detectors will be presented.

Paper Details

Date Published: 16 September 1994
PDF: 8 pages
Proc. SPIE 2280, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V, (16 September 1994); doi: 10.1117/12.186825
Show Author Affiliations
Walter Stockwell, Univ. of California/Berkeley (United States)
D. Akerib, Univ. of California/Berkeley (United States)
E. Aubourg, Univ. of California/Berkeley (United States)
P. D. Barnes, Univ. of California/Berkeley (United States)
A. Cummings, Univ. of California/Berkeley (United States)
Angela Da Silva, Univ. of British Columbia (United States)
J. Emes, Lawrence Berkeley Lab. (United States)
Sunil Golwala, Univ. of California/Berkeley (United States)
Eugene E. Haller, Univ. of California/Berkeley and Lawrence Berkeley Lab. (United States)
S. Margulies, Univ. of California/Berkeley (United States)
B. Pritychenko, Univ. of California/Berkeley and Baksan Neutrino Observatory (Russia) (United States)
R. R. Ross, Univ. of California/Berkeley and Lawrence Berkeley Lab. (United States)
Bernard Sadoulet, Univ. of California/Berkeley (United States)
T. Shutt, Univ. of California/Berkeley (United States)
Garth Smith, Lawrence Berkeley Lab. (United States)
J. Taylor, Lawrence Berkeley Lab. (United States)
S. White, Univ. of California/Berkeley (United States)
B. A. Young, Univ. of California/Berkeley (United States)


Published in SPIE Proceedings Vol. 2280:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V
Oswald H. W. Siegmund; John V. Vallerga, Editor(s)

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