Commissioning of the NPDGamma Detector Array: Counting Statistics in Current Mode Operation and Parity Violation in the Capture of Cold Neutrons on B(4)C and (27)Al

The NPDGamma γ-ray detector has been built to measure, with high accuracy, the size of the small parity-violating asymmetry in the angular distribution of gamma rays from the capture of polarized cold neutrons by protons. The high cold neutron flux at the Los Alamos Neutron Scattering Center (LANSCE...

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Autores principales: Gericke, M. T., Bowman, J. D., Carlini, R. D., Chupp, T. E., Coulter, K. P., Dabaghyan, M., Desai, D., Freedman, S. J., Gentile, T. R., Gillis, R. C., Greene, G. L., Hersman, F. W., Ino, T., Ishimoto, S., Jones, G. L., Lauss, B., Leuschner, M. B., Losowski, B., Mahurin, R., Masuda, Y., Mitchell, G. S., Muto, S., Nann, H., Page, S. A., Penttila, S. I., Ramsay, W. D., Santra, S., Seo, P.-N., Sharapov, E. I., Smith, T. B., Snow, W. M., Wilburn, W. S., Yuan, V., Zhu, H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2005
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4849590/
https://www.ncbi.nlm.nih.gov/pubmed/27308124
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author Gericke, M. T.
Bowman, J. D.
Carlini, R. D.
Chupp, T. E.
Coulter, K. P.
Dabaghyan, M.
Desai, D.
Freedman, S. J.
Gentile, T. R.
Gillis, R. C.
Greene, G. L.
Hersman, F. W.
Ino, T.
Ishimoto, S.
Jones, G. L.
Lauss, B.
Leuschner, M. B.
Losowski, B.
Mahurin, R.
Masuda, Y.
Mitchell, G. S.
Muto, S.
Nann, H.
Page, S. A.
Penttila, S. I.
Ramsay, W. D.
Santra, S.
Seo, P.-N.
Sharapov, E. I.
Smith, T. B.
Snow, W. M.
Wilburn, W. S.
Yuan, V.
Zhu, H.
author_facet Gericke, M. T.
Bowman, J. D.
Carlini, R. D.
Chupp, T. E.
Coulter, K. P.
Dabaghyan, M.
Desai, D.
Freedman, S. J.
Gentile, T. R.
Gillis, R. C.
Greene, G. L.
Hersman, F. W.
Ino, T.
Ishimoto, S.
Jones, G. L.
Lauss, B.
Leuschner, M. B.
Losowski, B.
Mahurin, R.
Masuda, Y.
Mitchell, G. S.
Muto, S.
Nann, H.
Page, S. A.
Penttila, S. I.
Ramsay, W. D.
Santra, S.
Seo, P.-N.
Sharapov, E. I.
Smith, T. B.
Snow, W. M.
Wilburn, W. S.
Yuan, V.
Zhu, H.
author_sort Gericke, M. T.
collection PubMed
description The NPDGamma γ-ray detector has been built to measure, with high accuracy, the size of the small parity-violating asymmetry in the angular distribution of gamma rays from the capture of polarized cold neutrons by protons. The high cold neutron flux at the Los Alamos Neutron Scattering Center (LANSCE) spallation neutron source and control of systematic errors require the use of current mode detection with vacuum photodiodes and low-noise solid-state preamplifiers. We show that the detector array operates at counting statistics and that the asymmetries due to B(4)C and (27)Al are zero to with- in 2 × 10(−6) and 7 × 10(−7), respectively. Boron and aluminum are used throughout the experiment. The results presented here are preliminary.
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spelling pubmed-48495902016-06-15 Commissioning of the NPDGamma Detector Array: Counting Statistics in Current Mode Operation and Parity Violation in the Capture of Cold Neutrons on B(4)C and (27)Al Gericke, M. T. Bowman, J. D. Carlini, R. D. Chupp, T. E. Coulter, K. P. Dabaghyan, M. Desai, D. Freedman, S. J. Gentile, T. R. Gillis, R. C. Greene, G. L. Hersman, F. W. Ino, T. Ishimoto, S. Jones, G. L. Lauss, B. Leuschner, M. B. Losowski, B. Mahurin, R. Masuda, Y. Mitchell, G. S. Muto, S. Nann, H. Page, S. A. Penttila, S. I. Ramsay, W. D. Santra, S. Seo, P.-N. Sharapov, E. I. Smith, T. B. Snow, W. M. Wilburn, W. S. Yuan, V. Zhu, H. J Res Natl Inst Stand Technol Article The NPDGamma γ-ray detector has been built to measure, with high accuracy, the size of the small parity-violating asymmetry in the angular distribution of gamma rays from the capture of polarized cold neutrons by protons. The high cold neutron flux at the Los Alamos Neutron Scattering Center (LANSCE) spallation neutron source and control of systematic errors require the use of current mode detection with vacuum photodiodes and low-noise solid-state preamplifiers. We show that the detector array operates at counting statistics and that the asymmetries due to B(4)C and (27)Al are zero to with- in 2 × 10(−6) and 7 × 10(−7), respectively. Boron and aluminum are used throughout the experiment. The results presented here are preliminary. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2005 2005-06-01 /pmc/articles/PMC4849590/ /pubmed/27308124 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Gericke, M. T.
Bowman, J. D.
Carlini, R. D.
Chupp, T. E.
Coulter, K. P.
Dabaghyan, M.
Desai, D.
Freedman, S. J.
Gentile, T. R.
Gillis, R. C.
Greene, G. L.
Hersman, F. W.
Ino, T.
Ishimoto, S.
Jones, G. L.
Lauss, B.
Leuschner, M. B.
Losowski, B.
Mahurin, R.
Masuda, Y.
Mitchell, G. S.
Muto, S.
Nann, H.
Page, S. A.
Penttila, S. I.
Ramsay, W. D.
Santra, S.
Seo, P.-N.
Sharapov, E. I.
Smith, T. B.
Snow, W. M.
Wilburn, W. S.
Yuan, V.
Zhu, H.
Commissioning of the NPDGamma Detector Array: Counting Statistics in Current Mode Operation and Parity Violation in the Capture of Cold Neutrons on B(4)C and (27)Al
title Commissioning of the NPDGamma Detector Array: Counting Statistics in Current Mode Operation and Parity Violation in the Capture of Cold Neutrons on B(4)C and (27)Al
title_full Commissioning of the NPDGamma Detector Array: Counting Statistics in Current Mode Operation and Parity Violation in the Capture of Cold Neutrons on B(4)C and (27)Al
title_fullStr Commissioning of the NPDGamma Detector Array: Counting Statistics in Current Mode Operation and Parity Violation in the Capture of Cold Neutrons on B(4)C and (27)Al
title_full_unstemmed Commissioning of the NPDGamma Detector Array: Counting Statistics in Current Mode Operation and Parity Violation in the Capture of Cold Neutrons on B(4)C and (27)Al
title_short Commissioning of the NPDGamma Detector Array: Counting Statistics in Current Mode Operation and Parity Violation in the Capture of Cold Neutrons on B(4)C and (27)Al
title_sort commissioning of the npdgamma detector array: counting statistics in current mode operation and parity violation in the capture of cold neutrons on b(4)c and (27)al
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4849590/
https://www.ncbi.nlm.nih.gov/pubmed/27308124
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