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Detector Development for the Next Phases of the Cryogenic Dark Matter Search: Results from 1 Inch Ge and Si Detectors

Bailey, C. N. and Ahmed, Z. and Akerib, D. S. and Brink, P. L. and Cabrera, B. and Castle, J. P. and Cooley, J. and Danowski, M. E. and Dragowsky, M. R. and Filippini, J. and Grant, D. R. and Hennings-Yeomans, R. and Mirabolfathi, N. and Novak, L. and Ogburn, R. W. and Pyle, M. and Ruderman, J. and Sadoulet, B. and Schnee, R. W. and Seitz, D. N. and Serfass, B. and Sundqvist, K. M. and Tomada, A. and Young, B. A. (2008) Detector Development for the Next Phases of the Cryogenic Dark Matter Search: Results from 1 Inch Ge and Si Detectors. Journal of Low Temperature Physics, 151 (1-2). pp. 211-215. ISSN 0022-2291. doi:10.1007/s10909-007-9645-x.

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The Cryogenic Dark Matter Search (CDMS) experiment is searching for Weakly Interacting Massive Particles (WIMPs) using detectors with the ability to discriminate between candidate (nuclear recoil) and background (electron recoil) events by measuring both phonon and ionization signals from recoils in the detector crystals. As CDMS scales up to greater WIMP sensitivity, it is necessary to increase the detector mass and further improve background discrimination. CDMS is engaged in ongoing fabrication and development of new detector designs in order to meet these criteria for the proposed SuperCDMS experiment. Thicker detector prototypes have been produced with new photolithographic masks. These masks have greater surface coverage of the quasi particle trap and transition edge sensor system to provide superior athermal phonon collection. Results from continuing laboratory tests are presented which already indicate improvement in discrimination parameters.

Item Type:Article
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URLURL TypeDescription ReadCube access
Filippini, J.0000-0001-8217-6832
Pyle, M.0000-0002-3490-6754
Additional Information:© 2008 Springer. Received: 22 July 2007. Accepted: 15 September 2007. Published online: 19 January 2008. This work is supported by the National Science Foundation under Grants Nos. PHY-0503629, PHY-0503729, PHY-0504224 and by the Department of Energy under Contract No. DEF-G03-90ER40569. The ZIP detectors were fabricated in the Stanford Nanofabrication Facility operated under NSF.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG03-90ER40569
Subject Keywords:SuperCDMS; dark matter
Issue or Number:1-2
Classification Code:PACS: 95.35.+d; 14.80.Ly; 29.40.Vj; 85.25.Oj; 73.61.Jc; 85.25.-j; 74.78.-w; 85.25.Oj
Record Number:CaltechAUTHORS:20100622-151750246
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:18764
Deposited By: Tony Diaz
Deposited On:15 Jul 2010 22:11
Last Modified:08 Nov 2021 23:46

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