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Your search keyword '"Leman, S. W."' showing total 5 results
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5 results on '"Leman, S. W."'

1. Search for annual modulation in low-energy CDMS-II data

Author

CDMS Collaboration, Ahmed, Z., Akerib, D. S., Anderson, A. J., Arrenberg, S., Bailey, C. N., Balakishiyeva, D., Baudis, L., Bauer, D. A., Brink, P. L., Bruch, T., Bunker, R., Cabrera, B., Caldwell, D. O., Cooley, J., Cushman, P., Daal, M., DeJongh, F., Di Stefano, P. C. F., Dragowsky, M. R., Fallows, S., Figueroa-Feliciano, E., Filippini, J., Fox, J., Fritts, M., Golwala, S. R., Hall, J., Hertel, S. A., Hofer, T., Holmgren, D., Hsu, L., Huber, M. E., Kamaev, O., Kiveni, M., Kos, M., Leman, S. W., Liu, S., Mahapatra, R., Mandic, V., McCarthy, K. A., Mirabolfathi, N., Moore, D. C., Nelson, H., Ogburn, R. W., Phipps, A., Prasad, K., Pyle, M., Qiu, X., Rau, W., Reisetter, A., Ricci, Y., Saab, T., Sadoulet, B., Sander, J., Schnee, R. W., Seitz, D., Serfass, B., Speller, D., Sundqvist, K. M., Tarka, M., Thakur, R. B., Villano, A. N., Welliver, B., Yellin, S., Yoo, J., Young, B. A., and Zhang, J.

Subjects
High Energy Physics - Experiment (hep-ex), Cosmology and Nongalactic Astrophysics (astro-ph.CO), FOS: Physical sciences, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment
Abstract

We report limits on annual modulation of the low-energy event rate from the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory. Such a modulation could be produced by interactions from Weakly Interacting Massive Particles (WIMPs) with masses ~10 GeV/c^2. We find no evidence for annual modulation in the event rate of veto-anticoincident single-detector interactions consistent with nuclear recoils, and constrain the magnitude of any modulation to 98% confidence. For events consistent with electron recoils, no significant modulation is observed for either single- or multiple-detector interactions in the 3.0-7.4 keVee range., 5 pages, plus 8 pages supplementary materials

Published
2012
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2. Phonon Quasidiffusion in Cryogenic Dark Matter Search Large Germanium Detectors

Author

Leman, S. W., Cabrera, B., McCarthy, K. A., Pyle, M., Resch, R., Sadoulet, B., Sundqvist, K. M., Brink, P. L., Cherry, M., Silva, E. Do Couto E, Figueroa-Feliciano, E., Mirabolfathi, N., Serfass, B., and Tomada, A.

Subjects
Condensed Matter - Materials Science, High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Astrophysics::Instrumentation and Methods for Astrophysics, Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), High Energy Physics - Experiment
Abstract

We present results on quasidiffusion studies in large, 3 inch diameter, 1 inch thick [100] high purity germanium crystals, cooled to 50 mK in the vacuum of a dilution refrigerator, and exposed with 59.5 keV gamma-rays from an Am-241 calibration source. We compare data obtained in two different detector types, with different phonon sensor area coverage, with results from a Monte Carlo. The Monte Carlo includes phonon quasidiffusion and the generation of phonons created by charge carriers as they are drifted across the detector by ionization readout channels., Comment: 13 pages, 12 figures, PHONONS201 conference proceedings; http://psroc.phys.ntu.edu.tw/cjp/download.php?d=4&pid=2718

Published
2011
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3. Modeling phase-separated transition-edge sensors in SuperCDMS detectors

Author

Anderson, A. J., Leman, S. W., Doughty, T., Figueroa-Feliciano, E., McCarthy, K. A., Pyle, M., and Young, B. A.

Subjects
Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Condensed Matter::Superconductivity, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract

The SuperCDMS experiment implements transition-edge sensors to measure athermal phonons produced by nuclear recoils in Ge crystals. We discuss a numerical simulation of these TES devices and a procedure for tuning the free model parameters to data, which reproduces superconducting-to-normal phase separation within a TES. This tuning provides insight into the behavior of the TESs, allows us to study the phase-separation length to optimize our detector design, and is integrated into a more complete simulation of the phonon and charge physics of SuperCDMS detectors., Comment: 13 pages, 10 figures, submitted to Nuclear Instruments and Methods in Physics Research Section A

Published
2011
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4. First measurements of SuperCDMS SNOLAB 100 mm diameter germanium dark matter detectors with interleaved charge and phonon channels

Author

Chagani, H., Bauer, D. A., Brandt, D., Brink, P. L., Bunker, R., Cabrera, B., Cherry, M., Codoreanu, G. A., Do Couto E Silva, E., Cushman, P., Godfrey, G. L., Hall, J., Hansen, S., Hasi, J., Kelsey, M., Kennedy, A., Kenney, C. J., Leman, S. W., Mandic, V., Mirabolfathi, N., Monin, S., Nagasawa, D., Novak, L., Partridge, R., Phenicie, C., Page, K., Pyle, M., Radpour, R., Rau, W., Resch, R., Sadoulet, B., Seitz, D. N., Serfass, B., Shank, B., Strandberg, D., Tomada, A., Anthony Villano, Yen, J., Young, B. A., and Zhang, J.

5. Search for annual modulation in low-energy CDMS-II data

Author

Ahmed, Z., Akerib, D. S., Anderson, A. J., Arrenberg, S., Bailey, C. N., Balakishiyeva, D., Baudis, L., Bauer, D. A., Brink, P. L., Bruch, T., Bunker, R., Cabrera, B., Caldwell, D. O., Cooley, J., Cushman, P., Daal, M., Dejongh, F., Di Stefano, P. C. F., Dragowsky, M. R., Fallows, S., Figueroa-Feliciano, E., Filippini, J., Fox, J., Fritts, M., Golwala, S. R., Hall, J., Hertel, S. A., Hofer, T., Donald Holmgren, Hsu, L., Huber, M. E., Kamaev, O., Kiveni, M., Kos, M., Leman, S. W., Liu, S., Mahapatra, R., Mandic, V., Mccarthy, K. A., Mirabolfathi, N., Moore, D. C., Nelson, H., Ogburn, R. W., Phipps, A., Prasad, K., Pyle, M., Qiu, X., Rau, W., Reisetter, A., Ricci, Y., Saab, T., Sadoulet, B., Sander, J., Schnee, R. W., Seitz, D., Serfass, B., Speller, D., Sundqvist, K. M., Tarka, M., Thakur, R. B., Villano, A. N., Welliver, B., Yellin, S., Yoo, J., Young, B. A., and Zhang, J.

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