Search

Your search keyword '"L. Duong"' showing total 22 results
Start Over Author "L. Duong" Topic cryogenic dark matter search
22 results on '"L. Duong"'

1. Present Status of the SuperCDMS program

Author

J. Hall, R. Hennings-Yeomans, Darren Grant, W. Rau, Jeffrey P. Filippini, S. J. Yellin, R. W. Ogburn, L. Duong, Martin E. Huber, Jodi Cooley, Bruno Serfass, J. Yoo, Tarek Saab, Kent D. Irwin, Enectali Figueroa-Feliciano, F. DeJongh, Betty A. Young, K. M. Sundqvist, Astrid Tomada, Bernard Sadoulet, M. R. Dragowsky, Blas Cabrera, X. Qiu, J. Sander, D. O. Caldwell, R. Schmitt, R. Mahapatra, Donald J. Holmgren, A. Reisetter, C. N. Bailey, D. A. Bauer, Sunil Golwala, M. Pyle, R. Bunker, L. Novak, R. W. Schnee, P. Cushman, D. N. Seitz, D. S. Akerib, H. N. Nelson, N. Mirabolfathi, P. L. Brink, and E. J. Ramberg

Subjects
Physics, Particle physics, Large Hadron Collider, Physics::Instrumentation and Detectors, Dark matter, Massive particle, Supersymmetry, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Nuclear physics, WIMP, Weakly interacting massive particles, High Energy Physics::Experiment, General Materials Science, Sensitivity (control systems), Cryogenic Dark Matter Search
Abstract

The expected final reach of the Weakly Interacting Massive Particle (WIMP) search experiment CDMS-II by the end of 2007 is a WIMP-nucleon cross-section sensitivity of 2.1×10−44 cm2. To proceed further in our search, we have proposed the SuperCDMS Phase A project that would deploy 42 1-inch thick Ge detectors, at a site deeper than the location of CDMS II, and reach a desired sensitivity goal of 1.3×10−45 cm2. These cross-sections are of interest and are complementary to Supersymmetry searches at the Large Hadron Collider (LHC) and future linear colliders.

Published
2008
Full Text
View/download PDF

2. Installation and commissioning of the CDMSII experiment at Soudan

Author

R. Mahapatra, Tarek Saab, M. J. Attisha, M. B. Crisler, H. N. Nelson, R. Ferril, John M. Martinis, Donald J. Holmgren, R. H. Nelson, M. C. Perillo Isaac, Astrid Tomada, G. Smith, R. Bunker, J. Alvaro-Dean, A. Lu, Alexander Bolozdynya, M. Haldeman, L. Duong, Martin E. Huber, J. P. F. Thompson, A. L. Spadafora, P. Meunier, J. Hellmig, Thushara Perera, D. O. Caldwell, R. L. Dixon, G. Wang, D. N. Seitz, S. Kamat, J. P. Castle, R. J. Gaitskell, M. S. Armel, S. J. Yellin, J. Sander, Bernard Sadoulet, R. W. Ogburn, Betty A. Young, T. A. Shutt, J. Emes, J. Perales, D. A. Bauer, R. W. Schnee, Ronald R. Ross, C. Savage, Laura Baudis, C. L. Chang, M. Kurylowicz, M. Hennessey, Vuk Mandic, D. D. Driscoll, Sunil Golwala, A. K. Davies, P. Cushman, A. Reisetter, W. Rau, D. S. Akerib, Blas Cabrera, Sae Woo Nam, R. M. Clarke, P. L. Brink, and N. Mirabolfathi

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Nuclear engineering, Detector, Dark matter, Nuclear physics, Data acquisition, Installation, Weakly interacting massive particles, Electromagnetic shielding, High Energy Physics::Experiment, Electronics, Cryogenic Dark Matter Search, Instrumentation
Abstract

In the past year and a half, the Cryogenic Dark Matter Search (CDMS) collaboration has been active at the Soudan mine in installing a system for running ZIP detectors that will be used to search for dark matter in the form of Weakly Interacting Massive Particles. Presently, there is an operating cryogenic system, working electronics, a functional data acquisition and analysis system, passive shielding, an active muon veto, and 12 ZIP detectors. Six of the 12 ZIP detectors have been tested in situ and are fully operational with acceptable noise profiles. CDMS is in the process of commissioning the experiment and expects to be making a background measurement by the end of summer 2003.

Published
2004
Full Text
View/download PDF

3. Characterization, performance, and future advanced analysis of detectors in the cryogenic dark matter search (CDMS-II)

Author

Thushara Perera, S. J. Yellin, J. Sander, C. N. Bailey, Chihway Chang, R. H. Nelson, Sunil Golwala, M. J. Attisha, Tarek Saab, P. Meunier, S. Leclercq, M. R. Dragowsky, J. P. F. Thompson, N. Mirabolfathi, E. J. Ramberg, R. Ferril, S. Kamat, D. O. Caldwell, Betty A. Young, R. J. Gaitskell, D. S. Akerib, K. M. Sundqvist, Donald J. Holmgren, R. W. Ogburn, Jeffrey P. Filippini, P. L. Brink, H. N. Nelson, M. B. Crisler, J. Yoo, Ronald R. Ross, R. Hennings-Yeomans, M. Pyle, Darren Grant, Vuk Mandic, L. Duong, Miguel Daal, Martin E. Huber, P. P. Brusov, D. N. Seitz, D. A. Bauer, R. Mahapatra, A. Reisetter, A. Lu, Bernard Sadoulet, G. Wang, C. Savage, Laura Baudis, R. Bunker, R. L. Dixon, Blas Cabrera, Jodi Cooley, R. W. Schnee, D. D. Driscoll, P. Cushman, and Bruno Serfass

Subjects
Physics, Data set, Nuclear and High Energy Physics, Particle physics, Cold dark matter, Detector, Cryogenic Dark Matter Search, Current (fluid), Instrumentation, Characterization (materials science)
Abstract

We present the techniques and results of the calibrations and surface-event rejection cut for the current CDMS-II data set, along with proposals for future analysis of CDMS-II data.

Published
2006
Full Text
View/download PDF

4. Limits on WIMP–nucleon interactions from the Cryogenic Dark Matter Search at the Soudan Underground Laboratory

Author

P. Meunier, R. W. Ogburn, S. Leclercq, M. R. Dragowsky, C. L. Chang, N. Mirabolfathi, M. B. Crisler, D. O. Caldwell, A. Reisetter, C. N. Bailey, M. Pyle, Jeffrey P. Filippini, R. Hennings-Yeomans, E. J. Ramberg, Darren Grant, D. N. Seitz, R. H. Nelson, Miguel Daal, R. Bunker, J. P. F. Thompson, H. N. Nelson, R. L. Dixon, L. Duong, R. J. Gaitskell, S. Kamat, Martin E. Huber, A. Lu, J. Sander, Thushara Perera, Donald J. Holmgren, S. J. Yellin, Betty A. Young, R. W. Schnee, Ronald R. Ross, D. D. Driscoll, G. Wang, K. M. Sundqvist, P. Cushman, Bernard Sadoulet, R. Mahapatra, R. Ferril, M. J. Attisha, C. Savage, Laura Baudis, P. L. Brink, Bruno Serfass, D. A. Bauer, Vuk Mandic, P. P. Brusov, Sunil Golwala, D. S. Akerib, Jodi Cooley, J. Yoo, and Blas Cabrera

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Large Underground Xenon experiment, Physics::Instrumentation and Detectors, Axion Dark Matter Experiment, Dark matter, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, WIMP, Weakly interacting massive particles, Warm dark matter, High Energy Physics::Experiment, Cryogenic Dark Matter Search, Instrumentation, Light dark matter
Abstract

We present the results of the first two data runs of the Cryogenic Dark Matter Search at Soudan Underground Laboratory. These data exclude substantial new parameter space for both spin-independent and spin-dependent WIMP–nucleon interactions within the standard halo model.

Published
2006
Full Text
View/download PDF

5. The SuperCDMS proposal for dark matter detection

Author

Betty A. Young, Jeffrey P. Filippini, K. M. Sundqvist, R. Bunker, L. Duong, Blas Cabrera, P. P. Brusov, Martin E. Huber, E. J. Ramberg, R. W. Schnee, A. Reisetter, M. R. Dragowsky, J. Yoo, Bernard Sadoulet, M. J. Attisha, J. P. F. Thompson, J. Sander, D. O. Caldwell, P. Cushman, C. N. Bailey, R. Hennings-Yeomans, Darren Grant, D. A. Bauer, P. L. Brink, Jodi Cooley, Peter Denes, R. J. Gaitskell, Laura Baudis, R. Mahapatra, Sunil Golwala, D. S. Akerib, Kent D. Irwin, Donald J. Holmgren, A. Lu, P. Meunier, R. W. Ogburn, H. N. Nelson, D. N. Seitz, N. Mirabolfathi, C. L. Chang, S. J. Yellin, M. B. Crisler, Tarek Saab, and Bruno Serfass

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Cold dark matter, Large Underground Xenon experiment, WIMP, Weakly interacting massive particles, Dark matter, Warm dark matter, Cryogenic Dark Matter Search, Instrumentation, Light dark matter
Abstract

Presently the CDMS-II collaboration's Weakly Interacting Massive Particle (WIMP) search at the Soudan Underground Laboratory sets the most stringent exclusion limits of any WIMP cold dark matter direct-detection experiment. To extend our reach further, to WIMP-nucleon cross-sections in the range 10 - 46 - 10 - 44 cm 2 , we propose SuperCDMS, which would take advantage of a very deep site. One promising site is the recently approved SNOLab facility in Canada. In this paper we will present our overall program and focus on phase A of SuperCDMS.

Published
2006
Full Text
View/download PDF

6. Further results from the CDMS experiment

Author

D. D. Driscoll, P. Cushman, M. C. Perillo Isaac, P. Meunier, N. Mirabolfathi, R. W. Ogburn, L. Duong, C. Savage, Laura Baudis, C. L. Chang, Martin E. Huber, M. B. Crisler, Bernard Sadoulet, J. P. F. Thompson, R. R. Ross, A. Lu, Vuk Mandic, R. J. Gaitskell, M. S. Armel, S. Kamat, M. J. Attisha, R. Bunker, G. Wang, R. L. Dixon, H. N. Nelson, Blas Cabrera, R. W. Schnee, R. Mahapatra, D. O. Caldwell, John M. Martinis, D. S. Akerib, D. A. Bauer, Betty A. Young, P. L. Brink, A. Reisetter, W. Rau, J. Sander, Tarek Saab, and S. J. Yellin

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Cold dark matter, Physics::Instrumentation and Detectors, Astrophysics::Instrumentation and Methods for Astrophysics, Fermion, Particle detector, Nuclear physics, WIMP, Ionization, Weakly interacting massive particles, High Energy Physics::Experiment, Neutron, Cryogenic Dark Matter Search, Instrumentation
Abstract

The Cryogenic Dark Matter Search experiment utilizes discriminating detectors where both the recoil energy and ionization produced by each particle event are simultaneously measured. Here we present our latest results from operating 4 Ge (4×250 g) and 2 Si (2×100 g) detectors at the shallow Stanford site. Our new WIMP exclusion limit excludes new parameter space for low-mass WIMPS.

Published
2004
Full Text
View/download PDF

7. Search for inelastic dark matter with the CDMS II experiment

Author

Jie Zhang, Jeffrey P. Filippini, S. A. Hertel, M. R. Dragowsky, R. Resch, L. Duong, Martin E. Huber, M. Pyle, Tarek Saab, S. Fallows, Donald J. Holmgren, S. J. Yellin, Betty A. Young, E. J. Ramberg, X. Qiu, L. Hsu, K. M. Sundqvist, H. N. Nelson, S. W. Leman, S. Arrenberg, David Moore, J. Hall, Bernard Sadoulet, M. Razeti, O. Kamaev, R. Bunker, M. Kiveni, R. Hennings-Yeomans, J. Sander, A. Reisetter, Kevin A. McCarthy, C. N. Bailey, W. Rau, S. Liu, P. L. Brink, David O. Caldwell, Enectali Figueroa-Feliciano, E. Do Couto E Silva, R. W. Ogburn, J. Yoo, D. N. Seitz, D. Balakishiyeva, N. Mirabolfathi, John Fox, M. Kos, P. C. F. Di Stefano, A. Phipps, Sunil Golwala, D. S. Akerib, P. Wikus, B. Serfass, R. Mahapatra, F. DeJongh, Blas Cabrera, Matthew Fritts, Vuk Mandic, D. A. Bauer, Jodi Cooley, M. Tarka, R. W. Schnee, Z. Ahmed, P. Cushman, T. Bruch, Laura Baudis, and M. Daal

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Cosmology and Nongalactic Astrophysics (astro-ph.CO), Energy window, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Dark matter, FOS: Physical sciences, Parameter space, Recoil energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Underground laboratory, Cryogenic Dark Matter Search, 010306 general physics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Results are presented from a reanalysis of the entire five-tower data set acquired with the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory, with an exposure of 969 kg-days. The analysis window was extended to a recoil energy of 150 keV, and an improved surface-event background-rejection cut was defined to increase the sensitivity of the experiment to the inelastic dark matter (iDM) model. Three dark matter candidates were found between 25 keV and 150 keV. The probability to observe three or more background events in this energy range is 11%. Because of the occurrence of these events the constraints on the iDM parameter space are slightly less stringent than those from our previous analysis, which used an energy window of 10-100 keV., 10 pages, 10 figures, minor changes to match published version, conclusion unchanged

Published
2011

8. Results from a low-energy analysis of the CDMS II germanium data

Author

H. N. Nelson, Z. Ahmed, Laura Baudis, D. Balakishiyeva, Steven W. Leman, P. Cushman, S. Liu, C. N. Bailey, E. Do Couto E Silva, Miguel Daal, M. R. Dragowsky, R. W. Schnee, Enectali Figueroa-Feliciano, David Moore, M. Kiveni, E. J. Ramberg, N. Mirabolfathi, J. Hall, M. Pyle, S. Arrenberg, L. Hsu, T. Bruch, Bernard Sadoulet, O. Kamaev, Kevin A. McCarthy, R. Hennings-Yeomans, Jeffrey P. Filippini, P. L. Brink, F. DeJongh, Blas Cabrera, David O. Caldwell, M. Kos, L. Duong, Martin E. Huber, J. Yoo, P. Di Stefano, D. A. Bauer, B. Serfass, Jodi Cooley, J. Sander, M. Tarka, Betty A. Young, Tarek Saab, K. M. Sundqvist, Matthew Fritts, Vuk Mandic, A. Phipps, S. A. Hertel, Jie Zhang, Sunil Golwala, X. Qiu, D. S. Akerib, J. Fox, R. Resch, R. Mahapatra, S. Fallows, Donald J. Holmgren, S. J. Yellin, P. Wikus, D. N. Seitz, R. Bunker, A. Reisetter, W. Rau, and R. W. Ogburn

Subjects
Particle physics, General Physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), CDMS Collaboration, Physics::Instrumentation and Detectors, Dark matter, FOS: Physical sciences, General Physics and Astronomy, chemistry.chemical_element, Germanium, Parameter space, 01 natural sciences, Mathematical Sciences, Particle detector, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Engineering, WIMP, 0103 physical sciences, 010306 general physics, Physics, 010308 nuclear & particles physics, hep-ex, Astrophysics::Instrumentation and Methods for Astrophysics, Semiconductor detector, chemistry, Weakly interacting massive particles, Physical Sciences, astro-ph.CO, High Energy Physics::Experiment, Cryogenic Dark Matter Search, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We report results from a reanalysis of data from the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory. Data taken between October 2006 and September 2008 using eight germanium detectors are reanalyzed with a lowered, 2 keV recoil-energy threshold, to give increased sensitivity to interactions from Weakly Interacting Massive Particles (WIMPs) with masses below ~10 GeV/c^2. This analysis provides stronger constraints than previous CDMS II results for WIMP masses below 9 GeV/c^2 and excludes parameter space associated with possible low-mass WIMP signals from the DAMA/LIBRA and CoGeNT experiments., 9 pages, 8 figures. Supplemental material included as ancillary files. v3) Added appendix with additional details regarding energy scale and backgrounds

Published
2011
Full Text
View/download PDF

9. Dark Matter Search Results from the CDMS II Experiment

Author

S. Arrenberg, Enectali Figueroa-Feliciano, S. A. Hertel, R. Bunker, Jie Zhang, M. R. Dragowsky, W. Rau, P. L. Brink, R. Mahapatra, M. Pyle, David Moore, L. Hsu, David O. Caldwell, N. Mirabolfathi, A. Phipps, D. N. Seitz, X. Oiu, M. Kos, Sunil Golwala, Jeffrey P. Filippini, R. W. Ogburn, Bernard Sadoulet, Blas Cabrera, D. Balakishiyeva, F. DeJongh, D. S. Akerib, Z. Ahmed, L. Duong, Donald J. Holmgren, O. Kamaev, Martin E. Huber, P. Wikus, Jodi Cooley, T. Bruch, Miguel Daal, J. Hall, D. A. Bauer, E. J. Ramberg, R. W. Schnee, R. Hennings-Yeomans, Steven W. Leman, J. Yoo, Betty A. Young, P. Cushman, B. Serfass, M. Tarka, Kevin A. McCarthy, Darren Grant, A. Resetter, K. M. Sundqvist, Matthew Fritts, Vuk Mandic, Laura Baudis, C. N. Bailey, J. Sander, H. N. Nelson, M. Kiveni, Tarek Saab, S. Fallows, and S. J. Yellin

Subjects
Elastic scattering, Physics, Particle physics, Multidisciplinary, Large Underground Xenon experiment, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Signal region, Dark matter, Massive particle, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Parameter space, 01 natural sciences, WIMP, 0103 physical sciences, High Energy Physics::Experiment, Cryogenic Dark Matter Search, 010306 general physics
Abstract

News from the Dark Side? Dark matter is thought to represent 85% of all matter in the universe and to have been responsible for the formation of structure in the early universe, but its nature is still a mystery. Ahmed et al. (p. 1619 , published online 11 February; see the Perspective by Lang ) describe the results from the completed Cryogenic Dark Matter Search (CDMS II) experiment, which searched for dark matter in the form of weakly interacting massive particles (WIMP). Two candidate signals were observed, whereas only one background event was expected. The probability of having two or more events from the background would have been 23%. The results of this analysis cannot be interpreted with confidence as evidence for WIMP interactions, but, at the same time, neither event can be ruled out as representing signal.

Published
2010

10. The Cryogenic Dark Matter Search (CDMS) experiment: Results, status and perspective

Author

R. Bunker, Blas Cabrera, Betty A. Young, R. W. Schnee, Steven W. Leman, K. M. Sundqvist, D. A. Bauer, D. Balakishiyeva, P. Cushman, J. Sanders, Z. Ahmed, Laura Baudis, D. O. Caldwell, S. A. Hertel, Bernard Sadoulet, O. Kamaev, M. Pyle, N. Mirabolfathi, Kevin A. McCarthy, Jodi Cooley, G. Wang, Darren Grant, Tarek Saab, J. Yoo, S. Arrenberg, W. Rau, R. Hennins‐Yeomans, David Moore, J. Beaty, X. Qiu, M. R. Dragowski, F. DeJongh, R. Mahapatra, Matthew Fritts, Enectali Figueroa-Feliciano, Sunil Golwala, Vuk Mandic, D. S. Akerib, C. N. Bailey, K. Clark, M. Kos, D. N. Seitz, H. N. Nelson, D. Homgren, M. Kiveni, S. J. Yellin, L. Hsu, J. Hall, Jeffrey P. Filippini, E. J. Ramberg, L. Duong, Martin E. Huber, P. L. Brink, A. Reisetter, R. W. Ogburn, T. Bruch, Bruno Serfass, Cabrera, B., Miller, A., and Young, B. A.

Subjects
Physics, Particle physics, Physics::Instrumentation and Detectors, Dark matter, Bolometer, Elementary particle, Cryogenics, Astrophysics::Cosmology and Extragalactic Astrophysics, Quasi particles, Particle detector, law.invention, Nuclear physics, law, Underground laboratory, High Energy Physics::Experiment, Cryogenic Dark Matter Search
Abstract

The Cryogenic Dark Matter Search experiment (CDMS) is using Phonon+Ionization detectors to search for Dark Matter in the form of Weakly Interactive Massive Particles (WIMPs). We report on new results from the operation of CDMS five “towers” at Soudan underground laboratory. With new and more massive detectors, SuperCDMS project has been started since March 2009. We report on the current status of SuperCDMS and its perspective.

Published
2009

11. Bulk and Surface Charge Collection: CDMS Detector Performance and Design Implications

Author

E. J. Ramberg, M. Whilden, T. Bruch, Bruno Serfass, C. N. Bailey, K. Clark, J. Sander, P. L. Brink, D. A. Bauer, M. R. Dragowsky, J. Hall, D. Balakishiyeva, Betty A. Young, R. Bunker, D. N. Seitz, H. N. Nelson, Z. Ahmed, K. M. Sundqvist, Kevin A. McCarthy, M. Kos, L. Hsu, S. J. Yellin, F. DeJongh, Sunil Golwala, Jeffrey P. Filippini, R. Mahapatra, Matthew Fritts, Vuk Mandic, D. O. Caldwell, W. Rau, J. Beaty, L. Duong, J. Yoo, D. Homgren, Astrid Tomada, G. Wang, Martin E. Huber, A. Reisetter, Bernard Sadoulet, Blas Cabrera, D. S. Akerib, A. Hojem, David Moore, N. Mirabolfathi, M. Kiveni, R. W. Schnee, S. Arrenberg, R. W. Ogburn, Steven W. Leman, Tarek Saab, P. Cushman, Enectali Figueroa-Feliciano, O. Kamaev, M. Pyle, R. Hennings-Yeomans, Darren Grant, S. A. Hertel, Laura Baudis, X. Qiu, Jodi Cooley, Cabrera, B., Miller, A., and Young, B.

Subjects
Physics, Physics::Instrumentation and Detectors, Ionization, Weakly interacting massive particles, Detector, Cryogenic Dark Matter Search, Physics::Atomic Physics, Atomic physics, Particle detector, Particle identification, Semiconductor detector, Ion
Abstract

The Cryogenic Dark Matter Search (CDMS) searches for Weakly Interacting Massive Particles (WIMPs) with cryogenic germanium particle detectors. These detectors discriminate between nuclear‐recoil candidate and electron‐recoil background events by collecting both phonon and ionization energy from interactions in the crystal. Incomplete ionization collection results in the largest background in the CDMS detectors as this causes electron‐recoil background interactions to appear as false candidate events. Two primary causes of incomplete ionization collection are suface and bulk charge trapping. Recent work has been focused on reducing surface trapping through the modification of fabrication methods for future detectors. Analyzing data taken with test devices shows that hydrogen passivation of the amorphous silicon blocking layer does not reduce the effects of surface trapping. Other data shows that the iron‐ion implantation used to lower the critical temperature of the tungsten transition‐edge sensors increases surface trapping, causing a degradation of the ionization collection. Using selective implantation on future detectors may improve ionization collection for events near the phonon side detector surface. Bulk trapping is minimized by neutralizing ionized lattice impurities. Detector investigations at testing facilities and at the experimental site in Soudan, MN have provided methods to optimize the neutralization process and monitor running conditions to maintain maximal ionization collection.

Published
2009

12. Search for axions with the CDMS experiment

Author

R. Bunker, J. Hall, A. Reisetter, P. L. Brink, W. Rau, F. DeJongh, Donald J. Holmgren, D. Balakishiyeva, Bernard Sadoulet, M. Pyle, M. R. Dragowsky, L. Hsu, S. A. Hertel, J. Yoo, Jeffrey P. Filippini, David Moore, D. O. Caldwell, D. N. Seitz, S. Arrenberg, L. Duong, Martin E. Huber, Tarek Saab, X. Qiu, N. Mirabolfathi, R. W. Ogburn, Jodi Cooley, Sunil Golwala, E. J. Ramberg, J. Sander, Betty A. Young, D. S. Akerib, Z. Ahmed, R. Mahapatra, K. M. Sundqvist, M. Kos, H. N. Nelson, S. J. Yellin, Kevin A. McCarthy, C. N. Bailey, Enectali Figueroa-Feliciano, O. Kamaev, R. Hennings-Yeomans, Darren Grant, G. Wang, T. Bruch, Bruno Serfass, R. W. Schnee, Blas Cabrera, Steven W. Leman, P. Cushman, Laura Baudis, M. Kiveni, J. Beaty, Matthew Fritts, Vuk Mandic, D. A. Bauer, and M. Tarka

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, High Energy Physics::Phenomenology, FOS: Physical sciences, General Physics and Astronomy, Elementary particle, Fermion, 7. Clean energy, 01 natural sciences, Galaxy, High Energy Physics - Experiment, Massless particle, High Energy Physics - Experiment (hep-ex), High Energy Physics::Theory, 0103 physical sciences, High Energy Physics::Experiment, Cryogenic Dark Matter Search, 010306 general physics, Axion, Lepton
Abstract

We report on the first axion search results from the Cryogenic Dark Matter Search (CDMS) experiment at the Soudan Underground Laboratory. An energy threshold of 2 keV for electron-recoil events allows a search for possible solar axion conversion into photons or local Galactic axion conversion into electrons in the germanium crystal detectors. The solar axion search sets an upper limit on the Primakov coupling $g_{a\gamma\gamma}$ of 2.4$ \times 10^{-9}$ GeV$^{-1}$ at the 95% confidence level for an axion mass less than 0.1 keV/c$^2$. This limit benefits from the first precise measurement of the absolute crystal plane orientations in this type of experiment. The Galactic axion search analysis sets a world-leading experimental upper limit on the axio-electric coupling $g_{a\bar{e}e}$ of 1.4$ \times 10^{-12}$ at the 90 % confidence level for an axion mass of 2.5 keV/c$^2$. This analysis excludes an interpretation of the DAMA annual modulation result in terms of Galactic axion interactions for axion masses above 1.4 keV/c$^2$., Comment: 5 pages, 5 figures

Published
2009

13. The Cryogenic Dark Matter Search (CDMS) : Present Status and Future

Author

P. L. Brink, Z. Ahmed, D. S. Akerib, C. N. Bailey, D. Balakishiyeva, D. A. Bauer, J. Beaty, R. Bunker, B. Cabrera, D. O. Caldwell, J. Cooley, E. do Couto e Silva, P. Cushman, F. DeJongh, M. R. Dragowsky, L. Duong, E. Figueroa-Feliciano, J. Filippini, M. Fritts, S. R. Golwala, D. R. Grant, J. Hall, R. Hennings-Yeomans, S. Hertel, A. Hojem, D. Holmgren, L. Hsu, M. E. Huber, O. Kamaev, M. Kos, M. Kiveni, S. W. Leman, R. Mahapatra, V. Mandic, K. A. McCarthy, D. Moore, N. Mirabolfathi, H. Nelson, L. Novak, R. W. Ogburn, M. Pyle, X. Qiu, E. Ramberg, W. Rau, A. Reisetter, T. Saab, B. Sadoulet, J. Sander, R. Schmitt, R. W. Schnee, D. N. Seitz, B. Serfass, K. M. Sundqvist, A. Tomada, G. Wang, P. Wikus, S. Yellin, J. Yoo, B. A. Young, Marvin L. Marshak, and Marshak, M. L.

Subjects
Physics, Particle physics, Upgrade, WIMP, Weakly interacting massive particles, Dark matter, Detector, Cryogenic Dark Matter Search
Abstract

The CDMS collaboration utilizes Ge detectors for their Weakly Interacting Massive Particle (WIMP) search at the Soudan mine, Minnesota. The final data run of CDMS II is complete and a detector upgrade for SuperCDMS has commenced. A SuperTower of five 1‐inch thick Ge crystals has been installed and undergoing commissioning. Its surface‐event rejection capability should allow SuperCDMS to continue to run background free for the next proposed phases: 15 kg Ge deployment at Soudan, and up to 150 kg Ge deployment at SNOLAB. Recent detector advances to allow a 1 tonne Ge experiment are also discussed.

Published
2009
Full Text
View/download PDF

14. Search for weakly interacting massive particles with the first five-tower data from the cryogenic dark matter search at the soudan underground laboratory

Author

Z. Ahmed, F. DeJongh, S. Arrenberg, R. W. Ogburn, K. M. Sundqvist, D. A. Bauer, J. Beaty, B. Serfass, S. A. Hertel, Bernard Sadoulet, Blas Cabrera, Tarek Saab, Jodi Cooley, R. Bunker, M. Pyle, J. Sander, J. Hall, M. Tarka, X. Qiu, T. Bruch, D. N. Seitz, A. Reisetter, Betty A. Young, Adam Sirois, W. Rau, C. N. Bailey, Darren Grant, L. Novak, N. Mirabolfathi, Jeffrey P. Filippini, M. R. Dragowsky, Astrid Tomada, L. Duong, R. Mahapatra, Matthew Fritts, R. J. Gaitskell, P. L. Brink, Martin E. Huber, Vuk Mandic, David O. Caldwell, R. Hennings-Yeomans, Donald J. Holmgren, S. J. Yellin, J. Yoo, Kevin A. McCarthy, E. J. Ramberg, Enectali Figueroa-Feliciano, R. Schmitt, Sunil Golwala, D. S. Akerib, P. Cushman, S. Burke, R. W. Schnee, Laura Baudis, J. Emes, H. N. Nelson, M. J. Attisha, and G. Wang

Subjects
Physics, Particle physics, DAMA/LIBRA, 010308 nuclear & particles physics, Dark matter, Massive particle, General Physics and Astronomy, Supersymmetry, 01 natural sciences, Nuclear physics, WIMP, Weakly interacting massive particles, 0103 physical sciences, Cryogenic Dark Matter Search, 010306 general physics, Light dark matter
Abstract

We report results from the Cryogenic Dark Matter Search at the Soudan Underground Laboratory (CDMS II) featuring the full complement of 30 detectors. A blind analysis of data taken between October 2006 and July 2007 sets an upper limit on the weakly interacting massive particle (WIMP) nucleon spin-independent cross section of 6.6x10;{-44} cm;{2} (4.6x10;{-44} cm;{2} when combined with previous CDMS II data) at the 90% confidence level for a WIMP mass of 60 GeV/c;{2}. This achieves the best sensitivity for dark matter WIMPs with masses above 44 GeV/c;{2}, and significantly restricts the parameter space for some favored supersymmetric models.

Published
2008

15. First CDMS II WIMP Search Results from the Soudan Underground Laboratory

Author

R. W. Ogburn, R. Bunker, A. Reisetter, Betty A. Young, W. Rau, K. M. Sundqvist, H. Nelson, G. Wang, P. L. Brink, M. J. Attisha, V. Mandic, R. Mahapatra, D. A. Bauer, N. Mirabolfathi, P. Meunier, B. Serfass, David O. Caldwell, A. J. Sirois, D. N. Seitz, Donald J. Holmgren, A. Lu, M. R. Dragowsky, J. Sander, J. P. F. Thompson, M. S. Armel-Funkhouser, R. R. Ross, C. Savage, Blas Cabrera, S. Kamat, R. Ferril, R. J. Gaitskell, E. J. Ramberg, M. B. Crisler, Bernard Sadoulet, C. L. Chang, R. Nelson, Tarek Saab, Thushara Perera, S. J. Yellin, D. S. Akerib, Jeffrey P. Filippini, L. Duong, M. E. Huber, Laura Baudis, D. D. Driscoll, P. Cushman, R. L. Dixon, and R. W. Schnee

Subjects
Physics, Particle physics, WIMP, Dark matter, Underground laboratory, Cryogenic Dark Matter Search
Abstract

D.S. Akerib, M.S. Armel-Funkhouser, M.J. Attisha, L. Baudis, D.A. Bauer, P.L. Brink, R. Bunker, B. Cabrera, D.O. Caldwell, C.L. Chang, M.B. Crisler, P. Cushman, R. Dixon, M.R. Dragowsky, D.D. Driscoll, L. Duong, R. Ferril, J. Filippini, R.J. Gaitskell, D. Holmgren, M.E. Huber, S. Kamat, A. Lu, R. Mahapatra, V. Mandic, P. Meunier, N. Mirabolfathi, H. Nelson, R. Nelson, R.W. Ogburn, T.A. Perera, E. Ramberg, W. Rau, A. Reisetter, R.R. Ross, T. Saab, B. Sadoulet, J. Sander, C. Savage, R.W. Schnee, D.N. Seitz, B. Serfass, A.J. Sirois, K.M. Sundqvist, J-P.F. Thompson, G. Wang, S. Yellin, and B.A. Young

Published
2006
Full Text
View/download PDF

16. Limits on Spin-Independent Interactions of Weakly Interacting Massive Particles with Nucleons from the Two-Tower Run of the Cryogenic Dark Matter Search

Author

N. Mirabolfathi, M. J. Attisha, Thushara Perera, S. J. Yellin, C. Savage, Laura Baudis, R. Ferril, Jodi Cooley, A. Reisetter, Sunil Golwala, Vuk Mandic, Ronald R. Ross, W. Rau, R. Bunker, R. Mahapatra, R. L. Dixon, Jeffrey P. Filippini, D. S. Akerib, Chihway Chang, H. N. Nelson, J. Yoo, S. Leclercq, R. W. Schnee, M. R. Dragowsky, L. Duong, Martin E. Huber, Bernard Sadoulet, D. O. Caldwell, R. H. Nelson, P. Meunier, D. D. Driscoll, G. Wang, Miguel Daal, Bruno Serfass, Blas Cabrera, R. W. Ogburn, P. Cushman, A. Lu, J. P. F. Thompson, S. Kamat, R. Hennings-Yeomans, R. J. Gaitskell, Darren Grant, Betty A. Young, D. A. Bauer, K. M. Sundqvist, Donald J. Holmgren, C. N. Bailey, M. B. Crisler, M. Pyle, J. Sander, D. N. Seitz, P. L. Brink, P. P. Brusov, and E. J. Ramberg

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Dark matter, General Physics and Astronomy, 01 natural sciences, 7. Clean energy, Tower (mathematics), Nuclear physics, Recoil, WIMP, Weakly interacting massive particles, 0103 physical sciences, Cryogenic Dark Matter Search, 010306 general physics, Nucleon, Spin-½
Abstract

We report new results from the Cryogenic Dark Matter Search (CDMS II) at the Soudan Underground Laboratory. Two towers, each consisting of six detectors, were operated for 74.5 live days, giving spectrum-weighted exposures of 34 kg-d for germanium and 12 kg-d for silicon targets after cuts, averaged over recoil energies 10-100 keV for a WIMP mass of 60GeV/c{sup 2}. A blind analysis was conducted, incorporating improved techniques for rejecting surface events. No WIMP signal exceeding expected backgrounds was observed. When combined with our previous results from Soudan, the 90% C.L. upper limit on the spin-independent WIMP-nucleon cross section is 1.6 x 10{sup -43} cm{sup 2} from Ge, and 3 x 10{sup -42} cm{sup 2} from Si, for a WIMP mass of 60GeV/c{sup 2}. The combined limit from Ge (Si) is a factor of 2.5 (10) lower than our previous results, and constrains predictions of supersymmetric models.

Published
2006

17. Latest Results From The CDMS-II Cold Dark Matter Search

Author

P. L. Brink, David O. Caldwell, D. A. Bauer, C. L. Chang, R. Mahapatra, M. J. Attisha, E. J. Ramberg, C. N. Bailey, Tarek Saab, R. Bunker, Ronald R. Ross, R. L. Dixon, R. Ferril, Bruno Serfass, S. Kamat, Miguel Daal, Blas Cabrera, M. B. Crisler, Jeffrey P. Filippini, R. W. Schnee, John M. Martinis, N. Mirabolfathi, G. Wang, C. Savage, Laura Baudis, Betty A. Young, K. M. Sundqvist, L. Duong, Martin E. Huber, Donald J. Holmgren, M. R. Dragowsky, A. Lu, D. D. Driscoll, M. S. Armel-Funkhouser, H. N. Nelson, D. S. Akerib, P. Cushman, R. Hennings-Yeomans, Thushara Perera, D. N. Seitz, S. J. Yellin, J. Sander, J. P. F. Thompson, Bernard Sadoulet, R. J. Gaitskell, R. H. Nelson, Vuk Mandic, P. Meunier, R. W. Ogburn, and A. Reisetter

Subjects
Nuclear physics, Physics, Particle physics, Cold dark matter, Weakly interacting massive particles, Dark matter, Cryogenic Dark Matter Search, Event (particle physics), Particle identification, Particle detector, Semiconductor detector
Abstract

The CDMS‐II collaboration’s Cold Dark Matter search presently sets the most competitive exclusion limit in the world for the direct detection of the hypothesized Weakly Interacting Massive Particles (WIMPs) that constitute the cold dark matter of the Universe. Our experiment utilizes Ge (and Si) crystals as the target detectors, each with a mass of 250 g (100 g) and cooled to 30 mK. To eliminate natural radioactive sources as background the experiment is conducted in a well‐shielded environment in the Soudan Mine, Minnesota, and has been operating for the last two years. To aid in the identification of a possible WIMP‐candidate event, the detectors are designed to measure both the ionization and athermal phonon signals produced by each candidate event. The athermal phonon signal is measured using superconducting aluminum films on the crystal surface connected to tungsten transition edge sensors. The latest WIMP‐search results from Soudan will be presented, along with projections for the future.

Published
2006
Full Text
View/download PDF

18. Limits on spin-dependent WIMP-nucleon interactions from the Cryogenic Dark Matter Search

Author

Blas Cabrera, H. N. Nelson, E. J. Ramberg, Bernard Sadoulet, F. DeJongh, M. J. Attisha, Vuk Mandic, Jeffrey P. Filippini, R. H. Nelson, Miguel Daal, D. N. Seitz, J. Sander, S. Leclercq, M. R. Dragowsky, A. Lu, Betty A. Young, Ronald R. Ross, L. Duong, Martin E. Huber, S. Kamat, J. P. F. Thompson, Tarek Saab, P. P. Brusov, P. L. Brink, P. Meunier, K. M. Sundqvist, D. O. Caldwell, R. Mahapatra, N. Mirabolfathi, G. Wang, D. A. Bauer, M. S. Armel-Funkhouser, R. J. Gaitskell, Jodi Cooley, R. Hennings-Yeomans, R. Ferril, Darren Grant, R. W. Ogburn, J. Yoo, Chihway Chang, Donald J. Holmgren, R. Bunker, Thushara Perera, S. J. Yellin, Bruno Serfass, A. Reisetter, C. N. Bailey, W. Rau, R. L. Dixon, R. W. Schnee, C. Savage, Laura Baudis, Sunil Golwala, D. D. Driscoll, P. Cushman, M. B. Crisler, M. Pyle, and D. S. Akerib

Subjects
Nuclear and High Energy Physics, Particle physics, Large Underground Xenon experiment, Physics::Instrumentation and Detectors, media_common.quotation_subject, Dark matter, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), WIMP, 0103 physical sciences, Warm dark matter, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Light dark matter, media_common, Physics, 010308 nuclear & particles physics, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, Universe, Weakly interacting massive particles, High Energy Physics::Experiment, Cryogenic Dark Matter Search
Abstract

The Cryogenic Dark Matter Search (CDMS) is an experiment to detect weakly interacting massive particles (WIMPs) based on their interactions with Ge and Si nuclei. We report the results of an analysis of data from the first two runs of CDMS at the Soudan Underground Laboratory in terms of spin-dependent WIMP-nucleon interactions on 73Ge and 29Si. These data exclude new regions of spin-dependent WIMP-nucleon interaction parameter space, including regions relevant to spin-dependent interpretations of the annual modulation signal reported by the DAMA/NaI experiment., Comment: 5 pages, 4 figures; replacement to match published version

Published
2006

19. Exclusion limits on the WIMP-nucleon cross section from the first run of the Cryogenic Dark Matter Search in the Soudan Underground Laboratory

Author

Ronald R. Ross, P. Meunier, Vuk Mandic, Bernard Sadoulet, B. Serfass, R. W. Ogburn, Blas Cabrera, D. D. Driscoll, M. S. Armel-Funkhouser, D. A. Bauer, Tarek Saab, P. Cushman, J. P. F. Thompson, K. M. Sundqvist, R. Hennings-Yeomans, M. Daal, R. Bunker, A. Reisetter, Betty A. Young, M. R. Dragowsky, M. C. Perillo Issac, W. Rau, R. Ferril, R. J. Gaitskell, H. N. Nelson, D. O. Caldwell, R. L. Dixon, A. Lu, D. S. Akerib, N. Mirabolfathi, R. W. Schnee, S. Kamat, C. L. Chang, R. H. Nelson, C. Savage, Laura Baudis, G. Wang, Thushara Perera, S. J. Yellin, M. J. Attisha, M. B. Crisler, J. Sander, Jeffrey P. Filippini, L. Duong, Martin E. Huber, E. J. Ramberg, Donald J. Holmgren, P. L. Brink, D. N. Seitz, R. Mahapatra, C. N. Bailey, and John M. Martinis

Subjects
Physics, Elastic scattering, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics (astro-ph), Dark matter, FOS: Physical sciences, Astrophysics, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Dark matter halo, High Energy Physics - Experiment (hep-ex), Recoil, WIMP, Weakly interacting massive particles, 0103 physical sciences, Neutron, Cryogenic Dark Matter Search, 010306 general physics
Abstract

The Cryogenic Dark Matter Search (CDMS-II) employs low-temperature Ge and Si detectors to seek Weakly Interacting Massive Particles (WIMPs) via their elastic scattering interactions with nuclei. Simultaneous measurements of both ionization and phonon energy provide discrimination against interactions of background particles. For recoil energies above 10 keV, events due to background photons are rejected with >99.99% efficiency. Electromagnetic events very near the detector surface can mimic nuclear recoils because of reduced charge collection, but these surface events are rejected with >96% efficiency by using additional information from the phonon pulse shape. Efficient use of active and passive shielding, combined with the the 2090 m.w.e. overburden at the experimental site in the Soudan mine, makes the background from neutrons negligible for this first exposure. All cuts are determined in a blind manner from in situ calibrations with external radioactive sources without any prior knowledge of the event distribution in the signal region. Resulting efficiencies are known to ~10%. A single event with a recoil of 64 keV passes all of the cuts and is consistent with the expected misidentification rate of surface-electron recoils. Under the assumptions for a standard dark matter halo, these data exclude previously unexplored parameter space for both spin-independent and spin-dependent WIMP-nucleon elastic scattering. The resulting limit on the spin-independent WIMP-nucleon elastic-scattering cross-section has a minimum of 4x10^-43 cm^2 at a WIMP mass of 60 GeV/c^2. The minimum of the limit for the spin-dependent WIMP-neutron elastic-scattering cross-section is 2x10^-37 cm^2 at a WIMP mass of 50 GeV/c^2., 37 pages, 42 figures

Published
2005
Full Text
View/download PDF

20. First Results from the Cryogenic Dark Matter Search in the Soudan Underground Lab

Author

J. Emes, D. S. Akerib, Daniel E. Hale, Ronald R. Ross, K. M. Sundqvist, R. L. Dixon, S. Burke, J. P. Castle, R. W. Schnee, D. N. Seitz, D. D. Driscoll, R. Mahapatra, B. Johnson, M. Kozlovsky, P. Cushman, Scott P. Orr, C. Savage, Laura Baudis, Betty A. Young, Astrid Tomada, E. J. Ramberg, A. G. Manalaysay, D. Callahan, Bernard Sadoulet, Jasmine L. May, M. J. Attisha, J. P. F. Thompson, L. Novak, R. McDonald, J. Beaty, R. J. Gaitskell, Wendy Johnson, Donald J. Holmgren, P. L. Brink, B. Serfass, M. C. Perillo Isaac, David O. Caldwell, B. Merkel, G. Wang, B. Lambin, M. R. Dragowsky, A. Lu, G. Smith, Alan R. Smith, R. H. Nelson, M. S. Armel-Funkhouser, S. Morrison, J. Williams, Jeffrey P. Filippini, S. Kyre, L. Duong, Martin E. Huber, Vuk Mandic, M. Crisler, M. Haldeman, D. A. Bauer, J. Sander, Blas Cabrera, J. Alvaro-Dean, N. Mirabolfathi, R. Choate, P. Meunier, R. W. Ogburn, C. L. Chang, H. N. Nelson, L. Kula, A. L. Spadafora, R. Bunker, A. Reisetter, R. Schmitt, W. Rau, Tarek Saab, S. Kamat, R. Ferril, Thushara Perera, and S. J. Yellin

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Dark matter, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, FOS: Physical sciences, Elementary particle, Supersymmetry, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 7. Clean energy, 01 natural sciences, Nuclear physics, Baryon, WIMP, Weakly interacting massive particles, 0103 physical sciences, Neutralino, High Energy Physics::Experiment, Cryogenic Dark Matter Search, 010306 general physics, Nuclear Experiment
Abstract

We report the first results from a search for weakly interacting massive particles (WIMPs) in the Cryogenic Dark Matter Search (CDMS) experiment at the Soudan Underground Laboratory. Four Ge and two Si detectors were operated for 52.6 live days, providing 19.4 kg-d of Ge net exposure after cuts for recoil energies between 10--100 keV. A blind analysis was performed using only calibration data to define the energy threshold and selection criteria for nuclear-recoil candidates. Using the standard dark-matter halo and nuclear-physics WIMP model, these data set the world's lowest exclusion limits on the coherent WIMP-nucleon scalar cross-section for all WIMP masses above 15 GeV, ruling out a significant range of neutralino supersymmetric models. The minimum of this limit curve at the 90% C.L. is 4 x 10^{-43} cm^2 at a WIMP mass of 60 GeV., Comment: 4 pages, 5 figures, submitted to Phys. Rev. Lett; minor clarifications in response to referee's comments

Published
2004
Full Text
View/download PDF

21. New results from the Cryogenic Dark Matter Search experiment

Author

D. A. Bauer, M. Perillo-Isaac, J. Perales, Ronald R. Ross, M. Kurylowicz, J. P. Castle, D. D. Driscoll, A. K. Davies, M. Hennessey, Vuk Mandic, M. B. Crisler, J. Alvaro-Dean, Tarek Saab, P. Cushman, N. Mirabolfathi, L. Duong, Sunil Golwala, Betty A. Young, Martin E. Huber, G. Smith, Astrid Tomada, J. Emes, S. Kamat, R. H. Nelson, D. S. Akerib, M. J. Attisha, R. Ferril, H. N. Nelson, R. L. Dixon, T. A. Shutt, G. Wang, R. W. Schnee, C. Savage, C. L. Chang, Blas Cabrera, Laura Baudis, R. Mahapatra, D. N. Seitz, A. Lu, R. M. Clarke, A. L. Spadafora, Alexander Bolozdynya, Thushara Perera, M. Haldeman, J. P. F. Thompson, S. J. Yellin, R. J. Gaitskell, J. Sander, Donald J. Holmgren, P. Meunier, R. W. Ogburn, R. Bunker, A. Reisetter, W. Rau, P. L. Brink, Bernard Sadoulet, J. Hellmig, Sae Woo Nam, David O. Caldwell, Armel, and John M. Martinis

Subjects
Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Hadron, FOS: Physical sciences, Elementary particle, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), WIMP, 0103 physical sciences, Neutron, 010306 general physics, Light dark matter, Physics, 010308 nuclear & particles physics, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, Baryon, Weakly interacting massive particles, High Energy Physics::Experiment, Cryogenic Dark Matter Search
Abstract

Using improved Ge and Si detectors, better neutron shielding, and increased counting time, the Cryogenic Dark Matter Search (CDMS) experiment has obtained stricter limits on the cross section of weakly interacting massive particles (WIMPs) elastically scattering from nuclei. Increased discrimination against electromagnetic backgrounds and reduction of neutron flux confirm WIMP-candidate events previously detected by CDMS were consistent with neutrons and give limits on spin-independent WIMP interactions which are >2X lower than previous CDMS results for high WIMP mass, and which exclude new parameter space for WIMPs with mass between 8-20 GeV/c^2., 4 pages, 4 figures

Published
2003
Full Text
View/download PDF

22. The Cryogenic Dark Matter Search (CDMS) experiment: Results and prospects

Author

Betty A. Young, Adam Sirois, K. M. Sundqvist, S. A. Hertel, X. Qiu, R. Mahapatra, W. Rau, R. W. Ogburn, Donald J. Holmgren, C. N. Bailey, E. J. Ramberg, J. Yoo, R. Schmitt, P. Cushman, Tarek Saab, Jeffrey P. Filippini, P. L. Brink, L. Duong, Matthew Fritts, J. Sander, Martin E. Huber, A. Reisetter, L. Novak, Vuk Mandic, Kevin A. McCarthy, F. DeJongh, S. J. Yellin, D. N. Seitz, J. Hall, G. Wang, H. N. Nelson, D. A. Bauer, N. Mirabolfathi, Astrid Tomada, Z. Ahmed, Jodi Cooley, R. Bunker, Sunil Golwala, J. Beaty, S. Burke, R. W. Schnee, Bruno Serfass, D. S. Akerib, Blas Cabrera, M. R. Dragowsky, Bernard Sadoulet, D. O. Caldwell, Enectali Figueroa-Feliciano, M. Pyle, R. Hennings-Yeomans, and Darren Grant

Subjects
Physics, History, Particle physics, Cold dark matter, Large Underground Xenon experiment, WIMP, Axion Dark Matter Experiment, Weakly interacting massive particles, Warm dark matter, Cryogenic Dark Matter Search, Light dark matter, Computer Science Applications, Education
Abstract

Weakly Interacting Massive Particles (WIMPs) are a strong candidate for the Cold Dark Matter of the Universe. CDMS-II is a direct-search WIMP search experiment, operating at 50 mK and housed at the Soudan mine, Minnesota. The 250 gram Ge detectors utilize athermal phonon sensors where tungsten transition edge sensors are operated in negative electrothermal feedback. The search at Soudan is ongoing with an expected final reach of CDMS-II by the end of 2008 of a WIMP-nucleon cross-section sensitivity of 2.1 x10-44 cm2, at a WIMP mass of 60 GeV/c2. To proceed further, we have proposed the SuperCDMS program.

Published
2009
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results