DocumentCode
2747229
Title
The BIPM G experiment Mk II
Author
Quinn, Terry ; Parks, Harold ; Speake, Clive ; Davis, Richard
Author_Institution
BIPM, Sevres, France
fYear
2012
fDate
1-6 July 2012
Firstpage
210
Lastpage
211
Abstract
This paper describes new work on the BIPM G experiment carried out since publication of the first results in 2001. The apparatus has been completely rebuilt and extensive tests carried out on the key parameters needed to produce a new value for G. The basic principles of the experiment remain the same, namely a torsion balance suspended from a wide thin Be-Cu strip with two modes of operation, free deflection and electrostatic servo-control. These two methods are substantially independent of each other. A new result for G will be presented at the CPEM.
Keywords
balances; beryllium alloys; copper alloys; gravitational constant; measurement standards; servomechanisms; BIPM G experiment; Be-Cu; CPEM; Mk II experiment; torsion balance; Calibration; Electrostatics; Laboratories; Systematics; Temperature measurement; Torque; Uncertainty; Fundamental constants; G; Gravity; Newtonian constant; Torsion balance;
fLanguage
English
Publisher
ieee
Conference_Titel
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location
Washington, DC
ISSN
0589-1485
Print_ISBN
978-1-4673-0439-9
Type
conf
DOI
10.1109/CPEM.2012.6250876
Filename
6250876
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