• DocumentCode
    767631
  • Title

    Absolute determination of the magnetic flux quantum using superconducting magnetic levitation

  • Author

    Shiota, F. ; Miki, Y. ; Namba, A. ; Nezu, Y. ; Sakamoto, Y. ; Morokuma, T. ; Hara, K.

  • Author_Institution
    Nat. Res. Lab. of Metrol., Ibaraki, Japan
  • Volume
    44
  • Issue
    2
  • fYear
    1995
  • fDate
    4/1/1995 12:00:00 AM
  • Firstpage
    583
  • Lastpage
    586
  • Abstract
    The current status of our superconducting magnetic levitation experiment for determining the magnetic flux quantum is described. The flux-up system has been improved significantly by using a Josephson voltage standard. Studies are also in progress to improve the mechanical measurement relevant to the floating body with the goal of reducing the uncertainty to less than 1 ppm
  • Keywords
    constants; magnetic flux; magnetic levitation; measurement errors; Josephson voltage standard; absolute determination; coil current measurement; displacement measurement; floating body; flux-up system; magnetic flux quantum; measurement uncertainty; mechanical measurement; superconducting magnetic levitation; Current measurement; Helium; Josephson junctions; Laboratories; Magnetic flux; Magnetic levitation; Mechanical variables measurement; Superconducting coils; Uncertainty; Voltage;
  • fLanguage
    English
  • Journal_Title
    Instrumentation and Measurement, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9456
  • Type

    jour

  • DOI
    10.1109/19.377913
  • Filename
    377913
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=767631