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Your search keyword '"Jeffrey P. Filippini"' showing total 7 results
Start Over Author "Jeffrey P. Filippini" Publisher elsevier bv
7 results on '"Jeffrey P. Filippini"'

1. Surface Event Rejection Using Phonon Information in CDMS

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, WIMP, Phonon, Estimator, Figure of merit, Acoustic Phonons, Signal edge, Atomic and Molecular Physics, and Optics, Simulation
Abstract

The published CDMS analyses have used the shape of the phonon signal rising edge to reject low-ionization-yield surface events which produce acoustic phonons more quickly than bulk events do. To achieve better WIMP sensitivity with future larger exposures, we are using a simplified model of phonon production and propagation to construct event position estimators that help us to find more efficient surface event rejection cuts. We describe this model and the resulting new cuts, and summarize the surface event leakage rates and the sensitivity figures of merit of the five surface event rejection methods developed in the second CDMS II Soudan run data analysis.

Published
2007

2. Study of the dead layer in germanium for the CDMS detectors

Author

Jeffrey P. Filippini, M. J. Attisha, P. L. Brink, R. W. Schnee, Laura Baudis, N. Mirabolfathi, W. Rau, Bruno Serfass, J. P. F. Thompson, P. Meunier, R. J. Gaitskell, R. W. Ogburn, Vuk Mandic, and C. L. Chang

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Bolometer, chemistry.chemical_element, Germanium, Electron, Particle detector, Semiconductor detector, law.invention, Nuclear physics, chemistry, law, Ionization, Neutron, Cryogenic Dark Matter Search, Instrumentation
Abstract

We present new measurements on a Cryogenic Dark Matter Search (CDMS) detector with electron, neutron, and gamma sources. The measurements have been performed to investigate the dead layer of one of the CDMS Z-dependent Ionization Phonon germanium detectors. The dead layer has been studied at both charge electrodes and at different electric field intensities. We also present a method to remove the dependence of athermal phonon measurements on event position.

Published
2004

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

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

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

6. Detector commissioning for the CDMS-II final run at the Soudan Underground Laboratory

Author

Betty A. Young, K. M. Sundqvist, D. S. Akerib, C. N. Bailey, D. A. Bauer, P. Meunier, J. Emes, R. W. Ogburn, Jeffrey P. Filippini, N. Mirabolfathi, D. A. Grant, Martin E. Huber, Vuk Mandic, R. W. Schnee, Blas Cabrera, P. Castle, Bernard Sadoulet, Astrid Tomada, Bruno Serfass, P. L. Brink, D. N. Seitz, M. R. Dragowsky, M. Pyle, P. P. Brusov, L. Novak, and C. L. Chang

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, media_common.quotation_subject, Dark matter, Detector, Universe, Particle detector, WIMP, Weakly interacting massive particles, Measuring instrument, Cryogenic Dark Matter Search, Instrumentation, media_common
Abstract

CDMS-II uses detectors known as Z-sensitive ionization phonons (ZIPs) to search for weakly interacting massive particles (WIMPs), a very promising candidate for the dark matter in the universe. The most recent data run utilized 12 ZIP detectors (six Ge and six Si) running for 1 2 year at the Soudan deep underground laboratory (780 m below surface), resulting in the current world's highest sensitivity to WIMP–nucleon coherent interaction [D.S. Akerib, et al., Phys. Rev. Lett. 93 (2004) 211301]. The CDMS-II experiment is approved to run 30 ZIPs until summer 2007 and its goal is to another order of magnitude increase in sensitivity to WIMPs. We present the detector preparation steps leading to the production of the CDMS-II detectors to be used in this final run.

Published
2006

7. First test runs of a dark-matter detector with interleaved ionization electrodes and phonon sensors for surface-event rejection

Author

N. Mirabolfathi, J. P. Castle, P. L. Brink, Betty A. Young, K. M. Sundqvist, Astrid Tomada, Jodi Cooley, P. Meunier, L. Novak, R. W. Ogburn, D. S. Akerib, Bruno Serfass, D. N. Seitz, M. Pyle, Blas Cabrera, Jeffrey P. Filippini, R. W. Schnee, R. Hennings-Yeomans, Darren Grant, Bernard Sadoulet, C. N. Bailey, M. R. Dragowsky, and J. Ruderman

Subjects
Physics, Nuclear and High Energy Physics, Phonon, business.industry, Detector, Signal, Crystal, Optics, Electric field, Ionization, Electrode, business, Instrumentation, Event (particle physics)
Abstract

To improve surface event rejection for the SuperCDMS experiment, we have designed, fabricated and tested a new detector concept where ionization electrodes are interleaved with phonon sensors on both sides of the detector. This i-(interleaved)-ZIP concept has electrical fields tangential to all detector surfaces. A surface event will produce an ionization signal in one charge read out channel, whereas an event within the bulk of the crystal will cause a signal in both charge read out channels. In addition, the symmetric phonon channels on both sides of the crystal, two semicircles on one side for x and two on the other for y , allow three-dimensional reconstruction of event locations through time delays and relative energy collection between the four phonon channels. Preliminary results from a 100 g Si prototype are presented.

Published
2006

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