研究目的
To describe the design and development of the KIBB-g1 tabletop Kibble balance, aimed at directly realizing mass units at the gram level with small uncertainty.
研究成果
The KIBB-g1 tabletop Kibble balance is in its last stages of development, approaching the data acquisition and analysis phase, with data to be presented at CPEM 2018.
研究不足
The design is constrained by the need to be tabletop-sized, cost less than 50,000 USD, and measure 1 to 10 g masses with uncertainties on the order of a few parts in 106. The effects of air bearing exhaust on systematic force during Force Mode are considered negligible at present measurement capabilities.
1：Experimental Design and Method Selection:
The KIBB-g1 Kibble balance was designed with constraints on form factor, cost, and capabilities to measure 1 to 10 g masses with uncertainties on the order of a few parts in
2：Sample Selection and Data Sources:
1 The design includes a dual-diameter truncated wheel pivoting about a two-point contact, coils connected to a custom built dual channel Vernier current source, and a dual frequency
3：83 MHz Zeeman-split laser for measuring displacement. List of Experimental Equipment and Materials:
Includes nonmagnetic Niva Alloy points, polished sapphire disks, SmCo magnet disk, soft iron inner and outer yokes, gauge 42 magnet wire, and air bearings.
4：Experimental Procedures and Operational Workflow:
The balance beam mimics the geometry of a beam but behaves as a wheel, with prescribed motion of hanging coils along the z-axis.
5：Data Analysis Methods:
Induced voltage is measured with an Agilent 3458A voltmeter in Velocity Mode, and voltage drop across a Fluke 742A 1-kOhm calibrated resistor is measured in Force Mode.
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