Title :
A highly stable tunable cryogenic capacitor
Author :
Overney, F. ; Jeanneret, B. ; Furlan, M.
Author_Institution :
Swiss Fed. Office of Metrol., Bern-Wabern, Switzerland
Abstract :
In order to realize a quantum capacitance standard, a highly stable vacuum-gap cryogenic capacitor based on a coaxial design has been developed. A tuning mechanism allows to adjust the room temperature value of the capacitance to obtain a value of 1 pF at 4.2 K. At low temperature, the difference between the measured and the target value is smaller than 30 ppm. This summary describes the main characteristics of this tunable capacitor.
Keywords :
capacitance measurement; capacitors; measurement standards; tuning; 1 pF; 4.2 K; coaxial design; electron counting; highly stable cryogenic capacitor; mechanical stability; quantum capacitance standard; reproducibility; tunable cryogenic capacitor; tuning mechanism; vacuum-gap cryogenic capacitor; Capacitance measurement; Capacitors; Coaxial components; Cryogenics; Electrodes; Electrons; Elementary particle vacuum; Quantum capacitance; Stability; Temperature;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.851007
