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4 results on '"M. Dragowsky"'

1. Nuclear-recoil energy scale in CDMS II silicon dark-matter detectors

Author

X. Zhao, T. Binder, G.L. Godfrey, J. D. Morales Mendoza, R. Underwood, Martin E. Huber, Tarek Saab, K. Schneck, N. Mast, E. H. Miller, M. Pepin, R. Germond, Yi Chen, B. Welliver, J. Hall, A. W. Borgland, H. R. Harris, W. A. Page, Amy Roberts, Yu Kai Chang, S. Fallows, A. N. Villano, Betty A. Young, M. Ghaith, A. Kubik, R. W. Schnee, V. Iyer, S. M. Oser, R. Basu Thakur, Miguel Daal, H. A. Tanaka, S. J. Yellin, Tsuguo Aramaki, A. Phipps, Hassan Chagani, David G. Cerdeño, K. L. Page, T. Doughty, P. Lukens, S. Banik, R. Partridge, Robert A. Moffatt, Kevin A. McCarthy, John Wilson, B. Cornell, R. Calkins, E. Fascione, Sunil Golwala, P. Redl, Ziqing Hong, P. L. Brink, M. Stein, David Moore, M. Peñalver Martinez, Adam Anderson, M. J. Wilson, E. M. Dragowsky, J. K. Nelson, Donald J. Holmgren, C. Cartaro, W. Rau, David O. Caldwell, H. E. Rogers, M. A. Bowles, P. Cushman, J. Sander, S. Scorza, Danielle Speller, H. Qiu, P. Di Stefano, R. Agnese, J. Street, D. Balakishiyeva, L. Hsu, D. Toback, Matt Pyle, Bruno Serfass, Kartik Senapati, D. Jardin, R. Mahapatra, A. Leder, R. Bunker, A. Reisetter, D. MacDonell, C. Jena, G. Gerbier, L. Esteban, D. Barker, Jodi Cooley, M. H. Kelsey, D. A. Bauer, S. S. Poudel, W. Baker, J. J. Yen, Matthew Fritts, Vuk Mandic, X. Zhang, N. Mirabolfathi, Bedangadas Mohanty, A. Jastram, A. Kennedy, Blas Cabrera, Enectali Figueroa-Feliciano, E. Lopez Asamar, Noah Kurinsky, B. von Krosigk, Bernard Sadoulet, A. E. Robinson, and Douglas Wright

Subjects
Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Dark matter, FOS: Physical sciences, Electron, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Recoil, Ionization, 0103 physical sciences, Neutron, Physics::Atomic Physics, 010306 general physics, Nuclear Experiment, Instrumentation and Methods for Astrophysics (astro-ph.IM), Instrumentation, Physics, Elastic scattering, 010308 nuclear & particles physics, Instrumentation and Detectors (physics.ins-det), 3. Good health, Semiconductor detector, Cryogenic Dark Matter Search, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The Cryogenic Dark Matter Search (CDMS II) experiment aims to detect dark matter particles that elastically scatter from nuclei in semiconductor detectors. The resulting nuclear-recoil energy depositions are detected by ionization and phonon sensors. Neutrons produce a similar spectrum of low-energy nuclear recoils in such detectors, while most other backgrounds produce electron recoils. The absolute energy scale for nuclear recoils is necessary to interpret results correctly. The energy scale can be determined in CDMS II silicon detectors using neutrons incident from a broad-spectrum $^{252}$Cf source, taking advantage of a prominent resonance in the neutron elastic scattering cross section of silicon at a recoil (neutron) energy near 20 (182) keV. Results indicate that the phonon collection efficiency for nuclear recoils is $4.8^{+0.7}_{-0.9}$% lower than for electron recoils of the same energy. Comparisons of the ionization signals for nuclear recoils to those measured previously by other groups at higher electric fields indicate that the ionization collection efficiency for CDMS II silicon detectors operated at $\sim$4 V/cm is consistent with 100% for nuclear recoils below 20 keV and gradually decreases for larger energies to $\sim$75% at 100 keV. The impact of these measurements on previously published CDMS II silicon results is small., Comment: 22 pages, 17 figures, 1 table, 1 appendix

Published
2018

2. The Large Underground Xenon (LUX) Experiment

Author

Mani Tripathi, E. K. Pease, C. Silva, M. Pangilinan, T. A. Shutt, P.D. Parker, V. N. Solovov, Robert Svoboda, K. Clark, Murdock Gilchriese, David Leonard, Daniel McKinsey, K. Kazkaz, E. Druszkiewicz, C.H. Faham, D. Byram, D. White, J. Thomson, T.M. Stiegler, A. W. Bradley, R. J. Gaitskell, A. Lindote, A. Rodionov, C. Chiller, Alexander Bolozdynya, M. Hanhardt, S. Fiorucci, D. Stolp, Z. Marquez, B. Holbrook, R. G. Jacobsen, E. Dahl, A. Bernstein, A. Dobi, J.R. Verbus, D. Carr, M. Moongweluwan, P. Sorensen, D. S. Akerib, M. Morii, J.J. Chapman, C. R. Hall, K.R. Gibson, F.L.H. Wolfs, N. Walsh, C. Sofka, D.C. Malling, Ethan Bernard, J. Spaans, R. C. Webb, A. Curioni, M. Sweany, L. de Viveiros, Dongming Mei, L. Kastens, Matthew Szydagis, M. Ihm, S. Uvarov, J. Kwong, D. J. Taylor, M.I. Lopes, R. Knoche, W. Skulski, S. Dazeley, Sidney Cahn, R. L. Mannino, A. A. Chiller, R. L. Lander, James Nikkel, T. Coffey, B. N. Edwards, T. Classen, C. Camp, S. Bedikian, K. Pech, S. Kyre, J. T. White, F. Neves, P. Roberts, M. Woods, Alexander Shei, H. N. Nelson, Chao Zhang, M. C. Carmona-Benitez, T. J. Whitis, A. Lyashenko, P. Phelps, M. Wlasenko, X. Bai, J. Mock, E. M. Dragowsky, K. T. Lesko, N. A. Larsen, and C. Lee

Subjects
Nuclear and High Energy Physics, Particle physics, Physics - Instrumentation and Detectors, Large Underground Xenon experiment, Dark matter, chemistry.chemical_element, FOS: Physical sciences, Atomic, 01 natural sciences, 7. Clean energy, Particle detector, Particle identification, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, Xenon, 0103 physical sciences, Nuclear, 010306 general physics, physics.ins-det, Instrumentation, Physics, Dark matter detectors, Time projection chamber, hep-ex, 010308 nuclear & particles physics, Detector, Molecular, Instrumentation and Detectors (physics.ins-det), Nuclear & Particles Physics, Other Physical Sciences, chemistry, Weakly interacting massive particles, Liquid xenon, Astronomical and Space Sciences
Abstract

The Large Underground Xenon (LUX) collaboration has designed and constructed a dual-phase xenon detector, in order to conduct a search for Weakly Interacting Massive Particles(WIMPs), a leading dark matter candidate. The goal of the LUX detector is to clearly detect (or exclude) WIMPS with a spin independent cross section per nucleon of $2\times 10^{-46}$ cm$^{2}$, equivalent to $\sim$1 event/100 kg/month in the inner 100-kg fiducial volume (FV) of the 370-kg detector. The overall background goals are set to have $, Comment: 50 pages, 16 figures

Published
2012
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3. Present Status of the SuperCDMS program.

Author

D. Akerib, C. Bailey, D. Bauer, P. Brink, R. Bunker, B. Cabrera, D. Caldwell, J. Cooley, P. Cushman, F. DeJongh, M. Dragowsky, L. Duong, E. Figueroa-Feliciano, J. Filippini, S. Golwala, D. Grant, J. Hall, R. Hennings-Yeomans, D. Holmgren, and M. Huber

Subjects
PARTICLES (Nuclear physics), COLLIDERS (Nuclear physics), SUPERCOLLIDERS, SYMMETRY (Physics)
Abstract

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. [ABSTRACT FROM AUTHOR]

Published
2008
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4. Detector Development for the Next Phases of the Cryogenic Dark Matter Search: Results from 1 Inch Ge and Si Detectors.

Author

C. Bailey, Z. Ahmed, D. Akerib, P. Brink, B. Cabrera, J. Castle, J. Cooley, M. Danowski, M. Dragowsky, J. Filippini, D. Grant, R. Hennings-Yeomans, N. Mirabolfathi, L. Novak, R. Ogburn, M. Pyle, J. Ruderman, R. Schnee, D. Seitz, and B. Serfass

Subjects
DETECTORS, PHYSICS instruments, ENGINEERING instruments, DETECTION alarms, WEAKLY interacting massive particle detectors
Abstract

Abstract   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. [ABSTRACT FROM AUTHOR]

Published
2008
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