Measurements of Polarized Neutron Beam Properties at NG-6 NIST and Performance of Polarized Neutron Optical Devices for a Precision Measurement of Parity-Violating Neutron Spin Rotation in $^{4}$He

ORAL

Abstract

A measurement of parity-violating (PV) neutron spin rotation in $^{4}$He to learn about NN weak interactions is now in preparation at the NIST Center for Neutron Research (NCNR). Because the expected magnitude of the PV signal is $\sim $ 10$^{-7}$ rad/m, and our sensitivity goal is 3$\times $10$^{-7}$ rad/m, knowledge of certain beam properties is essential to interpret the data properly and set limits on possible sources of systematic errors. I will present measurements of the beam intensity profile, wavelength distribution, flux, and the product of the polarizing power of the polarizer and the analyzing power of the polarization analyzer as a function of wavelength, position, and angle. Work supported in part by NSF PHY-0457219.

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Authors

  • A.M. Micherdzinska

    • Indiana Univ./IUCF

  • V. Zhumabekova

    • Al-Farabi Khazakh National Univ.

  • K. Gan

  • A.K. Opper

    • The George Washington Univ.

  • B.E. Crawford

    • Gettysburg College

  • C.D. Bass

  • J.M. Dawkins

  • T.D. Findley

  • J.C. Horton

  • C.R. Huffer

  • D. Luo

  • M.G. Sarsour

  • W.M. Snow

    • Indiana Univ./IUCF

  • E.I. Sharapov

    • Joint Institute for Nuclear Research, Dubna

  • H.P. Mumm

  • J.S. Nico

    • NIST

  • D.M. Markoff

    • North Carolina Central Univ.

  • P.R. Huffman

    • North Carolina State Univ./TUNL

  • B.R. Heckel

  • H.E. Swanson

    • Univ. of Washington