Title :
Development of a new levitated-mass mechanism toward replacing the kilogram
Author :
Fujii, Y. ; Miki, Y. ; Shiota, F. ; Watanabe, R. ; Morokuma, T. ; Nezu, Y.
Author_Institution :
Nat. Res. Lab. of Metrol., Ibaraki, Japan
Abstract :
A new superconducting levitated-mass mechanism is now being developed with the final target of replacing the kilogram in terms of the fundamental constants. Improving the stability of trajectory by means of introducing a superconducting linear bearing is the issue in question for this development. The strategy of the development, experimental results and further prospects are discussed.
Keywords :
magnetic levitation; mass measurement; units (measurement); fundamental constant; kilogram; mass levitation; superconducting linear bearing; Coils; Contacts; Joining processes; Laboratories; Metrology; NIST; Niobium; Optical interferometry; Stability; Superconductivity;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.851157
