Precision Measurement of Neutron Flux using Alpha-Gamma

ORAL

Abstract

A high precision measurement of cold neutron beam flux is a vital component of the beam method of neutron lifetime measurement used by the BL2 experiment. This measurement is accomplished through use of the Alpha-Gamma device. A pair of $^{10}$B targets are successively placed in the beam path such that the alpha and gamma production from the absorption determines the absolute neutron flux. The Alpha-Gamma device has been used in the calibration of several iterations of flux monitor used in BL2 to better than 0.1% precision. The results of recent measurements will be presented, and progress on the next generation of the device will be discussed.

*This work was supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under contract DE-FG02-03ER41258

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Presenters

  • Evan R Adamek

    • University of Tennessee Knoxville

Authors

  • Evan R Adamek

    • University of Tennessee Knoxville

  • Geoffrey L Greene

    • University of Tennessee
    • University of Tennessee Knoxville, University of Tennessee Knoxville

  • Nadia Fomin

    • University of Tennessee

  • Maynard Dewey

    • National Institute of Standards and Technology

  • David M Gilliam

    • National Institute of Standards and Technology

  • Shannon Fogwell Hoogerheide

    • National Institute of Standards and Technology

  • Hans P Mumm

    • National Institute of Standards and Technology
    • National Institute of Standards and Technology, Gaithersburg MD 20899

  • Jeffrey Scott Nico

    • National Institute of Standards and Technology

  • William Michael Snow

    • Indiana University Bloomington