Title :
Realization of a DC SQUID picovoltmeter
Author_Institution :
Bur. Nat. de Metrol., Fontenay aux Roses, France
Abstract :
A picovoltmeter based on a DC SQUID has been developed for the direct comparison between Josephson standards (PROVOLT project). The experimental results show a excellent agreement with the theory. An equivalent noise of 0.7 pV//spl radic/Hz is achieved in the white noise region, which extends down to 10 mHz.
Keywords :
SQUIDs; measurement standards; voltage measurement; voltmeters; white noise; 10 mHz; DC SQUID picovoltmeter; He cryostat; Josephson standards; PROVOLT project; direct comparison; equivalent noise; white noise; Circuit noise; Coupling circuits; Josephson junctions; Noise generators; Probes; SQUIDs; Superconducting device noise; Thermal resistance; Voltage; Voltmeters;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.851190
