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The irony of the magnet system for Kibble balances -- a review

Published

Author(s)

Stephan Schlamminger, Shisong Lo

Abstract

The magnet system is an essential component in the Kibble balance, supplying the magnetic flux that plays a vital role as the geometric factor $Bl$. Ironically, the $Bl$ factor cancels out and does not appear in the final Kibble equation. Nevertheless, care must be taken to design and build the magnet system because the cancellation is perfect if the $Bl$ is the same in both modes, the weighing and velocity mode. This review provides the knowledge necessary to build a magnetic circuit for the Kibble balance. In addition, it discusses the design considerations, parameter optimization, practical adjustment to the final performance evaluation, and an assessment of systematic uncertainties associated with the magnet system.
Citation
Metrologia
Volume
59
Issue
02

Keywords

Magnet system, Kibble balance, primary realization of mass

Citation

Schlamminger, S. and Lo, S. (2022), The irony of the magnet system for Kibble balances -- a review, Metrologia, [online], https://doi.org/10.1088/1681-7575/ac464a, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=932771 (Accessed August 18, 2022)
Created March 1, 2022, Updated March 9, 2022