Conception of an enhanced mechanism for a new Kibble balance directly traceable to the quantum SI

TL;DR

This paper presents the design of a new Kibble balance mechanism within the Quantum Electro-Mechanical Metrology Suite (QEMMS), aiming for highly precise mass measurements directly traceable to quantum standards.

Contribution

It introduces an innovative design for the Kibble balance's moving and weighing mechanism in the QEMMS, enhancing quantum traceability and measurement accuracy.

Findings

Target measurement range of 10 g to 200 g.

Achieves a relative combined uncertainty of 2×10⁻⁸ at 100 g.

Develops open hardware and software for the system.

Abstract

The ``Quantum Electro-Mechanical Metrology Suite'' (QEMMS) is being designed and built at the National Institute of Standards and Technology. It includes a Kibble balance, a Graphene quantum Hall resistance array and a Josephson voltage system, so that it is a new primary standard for the unit of mass, the kilogram, directly traceable to the International System of Units (SI) based on quantum constants. We are targeting a measurement range of 10 g to 200 g and optimize the design for a relative combined uncertainty of $2\times 10^{-8}$ for masses of 100 g. QEMMS will be developed as an open hardware and software design. In this article, we explain the design of the moving and weighing mechanism in the QEMMS.