The watt or Kibble balance: a technique for implementing the new SI definition of the unit of mass

IA Robinson, S Schlamminger - Metrologia, 2016 - iopscience.iop.org
The redefinition of the SI unit of mass in terms of a fixed value of the Planck constant has
been made possible by the Kibble balance, previously known as the watt balance. Once the …

Accuracy and stability evaluation of the 85Rb atom gravimeter WAG-H5-1 at the 2017 International Comparison of Absolute Gravimeters

PW Huang, B Tang, X Chen, JQ Zhong, ZY Xiong… - Metrologia, 2019 - iopscience.iop.org
We report on the realization and evaluation of the 85 Rb mobile atom absolute gravimeter
named WAG-H5-1. With a distinctive Raman laser implementation, two new systematic …

Determination of the Planck constant with the METAS watt balance

A Eichenberger, H Baumann, B Jeanneret… - metrologia, 2011 - iopscience.iop.org
The METAS watt balance project was initiated slightly more than a decade ago. Over this
time, the apparatus has been through an uninterrupted series of upgrades that have …

First realisation of the kilogram with the METAS Kibble balance

A Eichenberger, H Baumann, A Mortara… - Metrologia, 2022 - iopscience.iop.org
After several years of development and continuous improvement, the Kibble balance at the
Federal Institute of Metrology (METAS) is now operational. Its stability and reliability allows …

Perturbations of the local gravity field due to mass distribution on precise measuring instruments: a numerical method applied to a cold atom gravimeter

G d'Agostino, S Merlet, A Landragin, FP Dos Santos - Metrologia, 2011 - iopscience.iop.org
We present a numerical method, based on a FEM simulation, for the determination of the
gravitational field generated by massive objects, whatever geometry and space mass …

On the gravimetric contribution to watt balance experiments

Z Jiang, V Pálinkáš, O Francis, H Baumann… - Metrologia, 2013 - iopscience.iop.org
It has been recommended that the relative standard uncertainty of the numerical value of the
Planck constant required for the redefinition of the kilogram should not exceed 2× 10− 8. To …

Relative gravity measurement campaign during the 8th International Comparison of Absolute Gravimeters (2009)

Z Jiang, V Pálinkáš, O Francis, P Jousset, J Mäkinen… - Metrologia, 2011 - iopscience.iop.org
Abstract The 8th International Comparison of Absolute Gravimeters (ICAG-2009) and the
associated Relative Gravity Campaign (RGC2009) took place at the Bureau International …

Gravimetry for watt balance measurements

JO Liard, CA Sanchez, BM Wood, AD Inglis… - Metrologia, 2014 - iopscience.iop.org
In a watt balance (WB) the gravity on a known mass is used in the determination of the value
of the Planck constant with a precision of< 2× 10− 41 J s. To attain this precision the gravity …

On the effect of distortion and dispersion in fringe signal of the FG5 absolute gravimeters

P Křen, V Pálinkáš, P Mašika - Metrologia, 2015 - iopscience.iop.org
The knowledge of absolute gravity acceleration at the level of 1× 10− 9 is needed in
geosciences (eg for monitoring crustal deformations and mass transports) and in metrology …

Comparison of 3 absolute gravimeters based on different methods for the e-MASS project

A Louchet-Chauvet, S Merlet, Q Bodart… - IEEE Transactions …, 2011 - ieeexplore.ieee.org
We report on the comparison between three absolute gravimeters that took place in April
2010 at the Laboratoire National de Métrologie et d'Essais. The three instruments (FG5# 209 …