Progress on vacuum-to-air mass calibration system using magnetic suspension to disseminate the Planck-constant realized kilogram

• DOI: 10.21014/acta_imeko.v6i2.406
• Publication Date: 2017-07-23T05:22:16Z
• Authors: Eric Carl Benck; Corey Stambaugh; Edward Mulhern; Patrick Abbott; Zeina Kubarych
• Keywords: Kilogram; Planck Constant; NIST; Planck mass; Suspension; Electromagnetic suspension; Constant (computer programming)

The kilogram is the unit of mass in International System units (SI) and has been defined as Prototype Kilogram (IPK) since 1889. In future, a new definition will be realized by fixing value Planck constant. occur vacuum environment necessity, so National Institute Standards Technology (NIST) developing calibration system which artefact air can directly compared with environment. This apparatus uses magnetic suspension to couple high accuracy balance vacuum.