Skip to main content

Table 1 Requirements for the design of the QEMMS mechanism

From: Design of an enhanced mechanism for a new Kibble balance directly traceable to the quantum SI

Requirement

Value

Unit

Coil travel in velocity mode

±30

mm

Stiffness1

≤0.01

N m−1

Linear guiding of coil

Guiding imperfection of coil

≤10

μm

Hysteretic force

≤0.1

μg

Carrying capacity

≈15

kg

Installation space2

≤500

mm

  1. 1 The stiffness should be constant along the travel in the velocity mode, and over time. It should not change with, e.g., temperature fluctuation.
  2. 2 This indicates the maximum horizontal dimension.