Title :
Automated 10 volt Josephson voltage standard system operating with liquid helium and with a cryocooler
Author :
Schubert, M. ; Starkloff, M. ; Meyer, M. ; Wende, G. ; Anders, S. ; Steinbach, B. ; May, T. ; Meyer, H.-G.
Author_Institution :
Supracon AG, Jena
Abstract :
A commercially available complete microprocessor controlled, fully automated 10 Volt Josephson voltage standard system was developed in cooperation between IPHT and Supracon. The system operates with an array of altogether 19,700 SIS Josephson tunnel junctions. A direct comparison between two such systems showed an uncertainty of 2 times 10-10. Furthermore, a novel cryocooler based system is described.
Keywords :
cryogenics; measurement standards; superconductor-insulator-superconductor devices; voltage measurement; SIS Josephson tunnel junctions; cryocooler based system; fully automated Josephson voltage standard system; liquid helium; microprocessor; Automatic voltage control; Calibration; Control systems; Detectors; Frequency; Helium; Resistors; Sensor arrays; Uncertainty; Voltage control;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2008. CPEM 2008. Conference on
Conference_Location :
Broomfield, CO
Print_ISBN :
978-1-4244-2399-6
Electronic_ISBN :
978-1-4244-2400-9
DOI :
10.1109/CPEM.2008.4574807
