• DocumentCode
    236615
  • Title

    Update from the BIPM watt balance

  • Author

    Fang, Haiyang ; Kiss, A. ; Lavergne, T. ; Robertsson, L. ; de Mirandes, E. ; Solve, S. ; Picard, A. ; Stock, Michiel

  • Author_Institution
    Bur. Int. des Poids et Mesures (BIPM), Sevres, France
  • fYear
    2014
  • fDate
    24-29 Aug. 2014
  • Firstpage
    710
  • Lastpage
    711
  • Abstract
    This paper reports the latest progress made on the BIPM watt balance project. The type A uncertainty of the Planck constant measurements was reduced from 1.4 parts in 106 to about 5 parts in 107. The new magnet was successively fabricated and assembled with an expected high uniformity of the flux density of several parts in 104. Several new components are being introduced into the apparatus which we expect to reduce the type B measurement uncertainty significantly.
  • Keywords
    assembling; balances; magnetic flux; magnets; measurement uncertainty; wattmeters; BIPM watt balance project; Planck constant measurement uncertainty; assembling; flux density uniformity; magnet; type B measurement uncertainty; Coils; Force; Magnetic field measurement; Magnetic flux; Standards; Uncertainty; Vibrations; Interferometry; Kilogram; Mass metrology; Planck constant; Watt Balance;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
  • Conference_Location
    Rio de Janeiro
  • ISSN
    0589-1485
  • Print_ISBN
    978-1-4799-5205-2
  • Type

    conf

  • DOI
    10.1109/CPEM.2014.6898583
  • Filename
    6898583
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=236615