A Neutron Polarimeter for the Parity Violating Neutron Spin Rotation Measurement in Liquid $^{4}$He

ORAL

Abstract

To better understand the N-N weak interaction, we performed an experiment on the NG-6 beamline at NCNR using polarized cold neutrons passing through a liquid $^{4}$He target to measure the parity violating spin rotation. This is the most sensitive neutron spin rotation experiment performed to date. The polarimeter is designed to isolate the parity-odd component of the rotation, cancel the Larmour precession background from residual magnetic fields to isolate the expected 10$^{-6}$ rad/m parity-odd signal, and reduce nonstatistical noise from neutron source intensity fluctuations. We will discuss the design and operation of the neutron polarimeter.

*Work supported in part by NSF PHY-0457219 and NSF PHY-0758018.

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Authors

  • D. Luo

    • Indiana University/IUCF

  • C.D. Bass

    • IUCF/NIST

  • T.D. Bass

    • Indiana University/IUCF

  • B.E. Crawford

    • Gettysburg College

  • J.M. Dawkins

    • Indiana University/IUCF

  • K. Gan

    • George Washington University

  • B.R. Heckel

    • University of Washington

  • J.C. Horton

    • Indiana University/IUCF

  • C.R. Huffer

    • North Carolina State University/TUNL

  • D.M. Markoff

    • North Carolina Central University

  • A.M. Micherdzinska

    • George Washington University

  • H.P. Mumm

    • NIST

  • J.S. Nico

    • NIST

  • A.K. Opper

    • George Washington University

  • M.G. Sarsour

    • Georgia State University

  • E. Sharapov

    • Joint Institute for Nuclear Research

  • W.M. Snow

    • Indiana University/IUCF

  • H.E. Swanson

    • University of Washington

  • S.C. Walbridge

    • Indiana University/IUCF

  • V. Zhumabekova

    • Al-Farabi Kazakh National University