Title :
An improved CCC and QHR system for resistance standards metrology
Author :
Good, J.A. ; Owczarkowski, M. ; Holubar, T.
Author_Institution :
Cryogenic Ltd., London, UK
Abstract :
We have improved on the design of the integrated cryogenic current comparator (CCC) and QHR system used for the characterisation of standard resistors to the quantum Hall standard of resistance. Improved current sources are used with a larger and more sensitive CCC. The CCC is mounted in a separate cryostat so that both the CCC and QHR system can be used independently.
Keywords :
Cryostats; Current comparators; Electric resistance measurement; Measurement standards; Quantum Hall effect; Resistors; automated system; cryogenic current comparator; cryoperm shield; improved current sources; integrated system; low loss design; quantum Hall standard; resistance standards metrology; separate cryostat; standard resistors; Background noise; Magnetic field measurement; Magnetic flux; Magnetic noise; Magnetic separation; Metrology; Superconducting device noise; Superconducting magnets; System testing; Thermal resistance;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.850896
