Cryogenic germanium detectors for a weakly interactive massive particle (WIMP) dark-matter search

Walter Stockwell; D. Akerib; E. Aubourg; P. D. Barnes Jr.; 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

doi:10.1117/12.186825

16 September 1994 Cryogenic germanium detectors for a weakly interactive massive particle (WIMP) dark-matter search

Walter Stockwell, D. Akerib, E. Aubourg, P. D. Barnes Jr., 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

Author Affiliations +

Proceedings Volume 2280, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V; (1994) https://doi.org/10.1117/12.186825
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

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.

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Walter Stockwell, D. Akerib, E. Aubourg, P. D. Barnes Jr., 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, and B. A. Young "Cryogenic germanium detectors for a weakly interactive massive particle (WIMP) dark-matter search", Proc. SPIE 2280, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V, (16 September 1994); https://doi.org/10.1117/12.186825

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