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5 results on '"F. LePort"'

1. Systematic study of trace radioactive impurities in candidate construction materials for EXO-200

Author

David A. Sinclair, Giorgio Gratta, A. Burenkov, J. Wodin, K. O'Sullivan, C. R. Hall, D. Schenker, A. Piepke, J. Hodgson, J. Farine, E. Baussan, M. Danilov, D. Akimov, K. Hall, M. P. Green, P. C. Rowson, Z. Djurcic, Patricia Grinberg, A. G. Kovalenko, David Leonard, Alain Bellerive, W. M. Fairbank, M. Montero Díez, R. Herbst, I. Ekchtout, J. M. Vuilleumier, G. Smirnov, F. LePort, K. Wamba, Shimon Kolkowitz, L. Ounalli, K. Skarpaas, P. Weber, Shie-Chang Jeng, D. Kovalenko, B. Flatt, D. Mackay, R. DeVoe, D. Hallman, M. Bowcock, G. Keefer, W. Craddock, C. K. Hargrove, V.N. Stekhanov, A. Pocar, A. Odian, M. K. Moe, J.-L. Vuilleumier, R. Neilson, M. S. Dixit, P. Fierlinger, V. Strickland, C. J. Virtue, Martin Breidenbach, C. Y. Prescott, R. Conley, and A. Dolgolenko

Subjects
Physics, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Trace (linear algebra), Trace Amounts, fungi, Radiochemistry, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Mass spectrometry, Nuclear physics, Impurity, Double beta decay, Trace analysis, Nuclear Experiment (nucl-ex), Neutron activation analysis, Nuclear Experiment, Instrumentation, Enriched Xenon Observatory
Abstract

The Enriched Xenon Observatory (EXO) will search for double beta decays of 136Xe. We report the results of a systematic study of trace concentrations of radioactive impurities in a wide range of raw materials and finished parts considered for use in the construction of EXO-200, the first stage of the EXO experimental program. Analysis techniques employed, and described here, include direct gamma counting, alpha counting, neutron activation analysis, and high-sensitivity mass spectrometry., Comment: 32 pages, 6 figures. Expanded introduction, added missing table entry. Accepted for publication in Nucl. Instrum. Meth. A

Published
2008
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2. A linear RFQ ion trap for the Enriched Xenon Observatory

Author

David A. Sinclair, S. Waldman, C. R. Hall, K. O'Sullivan, B. Flatt, M. Montero Díez, F. LePort, V. Strickland, A. Odian, J. Wodin, David Leonard, D. Hallman, Yul Martin, L. Ounalli, M. Hauger, W. M. Fairbank, Martin Breidenbach, F. Juget, M. P. Green, P. C. Rowson, J.-M. Vuilleuimier, K. Wamba, D. Mackay, C. Y. Prescott, C. Virtue, Giorgio Gratta, K. Skarpaas, C. K. Hargrove, R. Neilson, J.-L. Vuilleuimier, R. DeVoe, A. Pocar, P. Fierlinger, J. Hodgson, J. Farine, E. Baussan, R. Conley, A. Piepke, B. Mong, P. Weber, D. Schenker, and K. Hall

Subjects
Physics, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Detector, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Fluorescence spectroscopy, Ion, Decay energy, Double beta decay, Ion trap, Atomic physics, Spectroscopy, Instrumentation, Enriched Xenon Observatory
Abstract

The design, construction, and performance of a linear radio-frequency ion trap (RFQ) intended for use in the Enriched Xenon Observatory (EXO) are described. EXO aims to detect the neutrinoless double-beta decay of $^{136}$Xe to $^{136}$Ba. To suppress possible backgrounds EXO will complement the measurement of decay energy and, to some extent, topology of candidate events in a Xe filled detector with the identification of the daughter nucleus ($^{136}$Ba). The ion trap described here is capable of accepting, cooling, and confining individual Ba ions extracted from the site of the candidate double-beta decay event. A single trapped ion can then be identified, with a large signal-to-noise ratio, via laser spectroscopy., Comment: 18 pages, pdflatex, submitted to NIM A

Published
2007
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3. Observation of Two-Neutrino Double-Beta Decay inXe136with the EXO-200 Detector

Author

C. Y. Prescott, A Rivas, R. Conley, A. R. Müller, D. Tosi, D. J. Auty, D. Franco, J. Wodin, Peter Fierlinger, C. Hagemann, Michael G. Marino, A. Dobi, B. T. Cleveland, P. S. Barbeau, E. Beauchamp, A. S. Johnson, A. Kuchenkov, B. Mong, J. J. Russell, G. Giroux, K. S. Kumar, T. Walton, David Leonard, Thomas Koffas, W. M. Fairbank, M. Swift, P. Morgan, M. J. Dolinski, M. Danilov, C. K. Hargrove, J. Farine, Z. Djurcic, V. Belov, K. Barry, J. Davis, V. Strickland, Giorgio Gratta, J. Cook, Marc Weber, U. Wichoski, R. DeVoe, Petr Vogel, Y.-R. Yen, L. Bartoszek, A. Coppens, E. Conti, R. MacLellan, B. Aharmim, K. Pushkin, I. Counts, S. Cook, J.-L. Vuilleumier, V.N. Stekhanov, K. Twelker, K. Wamba, Liang Yang, G. Haller, Monica Dunford, C. G. Davis, A. Sabourov, Martin Breidenbach, K. Hall, J. D. Wright, K. Donato, D. Mackay, David A. Sinclair, L. J. Kaufman, E. Rollin, F. Leonard, J. Hodgson, K. Skarpaas, O. Ya. Zeldovich, A. Burenkov, M. Auger, W. W. Craddock, A. Pocar, C. Ouellet, K. Graham, K. O'Sullivan, D. R. Freytag, Y. Martin, S. Waldman, A. Karelin, R. Nelson, J. M. Vuilleumier, M. Montero Díez, F. LePort, M. Hughes, A. P. Waite, Nicole Ackerman, S. Herrin, C. R. Hall, R. Herbst, A. Dolgolenko, S. Slutsky, Amit Kumar, M. P. Green, C. Benitez-Medina, T. Daniels, A. Piepke, A.C. Odian, R. Neilson, P. C. Rowson, and R. Gornea

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, General Physics and Astronomy, Elementary particle, 01 natural sciences, Beta decay, Nuclear physics, MAJORANA, Double beta decay, 0103 physical sciences, Isotopes of xenon, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, 010306 general physics, Radioactive decay, Lepton
Abstract

We report the observation of two-neutrino double-beta decay in ^(136)Xe with T_(1/2)=2.11±0.04(stat)±0.21(syst)×10^(21) yr. This second-order process, predicted by the standard model, has been observed for several nuclei but not for ^(136)Xe. The observed decay rate provides new input to matrix element calculations and to the search for the more interesting neutrinoless double-beta decay, the most sensitive probe for the existence of Majorana particles and the measurement of the neutrino mass scale.

Published
2011
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4. The EXO-200 detector, part I: detector design and construction

Author

A. Coppens, E. Beauchamp, J. M. Vuilleumier, R. DeVoe, T. Walton, C. Ouellet, M. Hughes, J. Wodin, A. Piepke, A. Sabourov, C. Benitez-Medina, G. Giroux, K. Graham, P. C. Rowson, David Leonard, David A. Sinclair, A. Pocar, S. Herrin, W. M. Fairbank, K. O'Sullivan, C. R. Hall, D. Franco, M. Swift, D. Chauhan, Michael G. Marino, C. Hagemann, J. Hodgson, J. Farine, M. Dunford, Julie Kirk, M. Montero Díez, S. Cook, P. Fierlinger, Marc Weber, A. Karelin, K. Twelker, F. LePort, S. Slutsky, K. Skarpaas, R. Neilson, F. Leonard, D. J. Auty, B. Mong, U. Wichoski, James G. Davis, R. MacLellan, J. D. Wright, A. Odian, M. Auger, M. J. Dolinski, Giorgio Gratta, R. Gornea, B. T. Cleveland, A. Kuchenkov, Liang Yang, D. Mackay, A Rivas, V.N. Stekhanov, E. Baussan, E. Rollin, J. L. Vuilleumier, R. Conley, A. R. Müller, D. Tosi, W. Craddock, J. Cook, T. Daniels, L. J. Kaufman, Y.-R. Yen, K. Hall, K. Merkle, K. Pushkin, C. Y. Prescott, C. K. Hargrove, A. Dobi, V. Strickland, K. S. Kumar, C. G. Davis, Martin Breidenbach, P. S. Barbeau, and L. Bartoszek

Subjects
Physics - Instrumentation and Detectors, Resolution (mass spectrometry), FOS: Physical sciences, chemistry.chemical_element, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Optics, Xenon, Ionization, Double beta decay, 0103 physical sciences, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Instrumentation, Mathematical Physics, Physics, Scintillation, Time projection chamber, 010308 nuclear & particles physics, business.industry, Detector, Instrumentation and Detectors (physics.ins-det), chemistry, business, Energy (signal processing)
Abstract

EXO-200 is an experiment designed to search for double beta decay of $^{136}$Xe with a single-phase, liquid xenon detector. It uses an active mass of 110 kg of xenon enriched to 80.6% in the isotope 136 in an ultra-low background time projection chamber capable of simultaneous detection of ionization and scintillation. This paper describes the EXO-200 detector with particular attention to the most innovative aspects of the design that revolve around the reduction of backgrounds, the efficient use of the expensive isotopically enriched xenon, and the optimization of the energy resolution in a relatively large volume.

Published
2012
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5. Prospects for Barium Tagging in Gaseous Xenon

Author

J. L. Vuilleumier, A. Piepke, A Mommers, A. Burenkov, G Gornea, P. C. Rowson, A. R. Müller, C. K. Hargrove, G. Giroux, E. Niner, A. Pocar, Liang Yang, C. Ouellet, N Ackeran, M. Montero Díez, K. Graham, B. Mong, F. LePort, A. Dobi, M. J. Dolinski, A. Coppens, Martin Auger, K. O'Sullivan, B. Aharmin, J. Farine, V.N. Stekhanov, R. DeVoe, K. Hall, R. Neilson, D. Hallman, J. Wodin, C. Hagemann, Martin Breidenbach, A. Odian, S. Slutsky, S. Herrin, C. Benitez-Medina, Jeffrey C. Smith, Y.-R. Yen, E. Rollin, K Donato, C. Y. Prescott, D. Mackay, P. S. Barbeau, K. Pushkin, Norvik Voskanian, S. Cook, R MacLennan, M. P. Green, U. Wichoski, L K Kaufman, T. Daniels, Giorgio Gratta, David Leonard, David A. Sinclair, C. R. Hall, W. M. Fairbank, and K. Twelker

Subjects
History, Alkaline earth metal, Analytical chemistry, chemistry.chemical_element, Barium, Particle detector, Charged particle, Computer Science Applications, Education, Ion, Xenon, chemistry, Double beta decay, Radioactive decay, Nuclear chemistry
Abstract

Tagging events with the coincident detection of a barium ion would greatly reduce the background for a neutrino-less double beta decay search in xenon. This paper describes progress towards realizing this goal. It outlines a source that can produce large quantities of Ba++ in gas, shows that this can be extracted to vacuum, and demonstrates a mechanism by which the Ba++ can be efficiently converted to Ba+ as required for laser identification.

Published
2011
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