Title :
Medium size cryogenic current comparator as very low current amplifier
Author :
Gay, F. ; Piquemal, F. ; Geneves, G.
Author_Institution :
Lab. Central des Ind. Electr., Bur. Nat. de Metrol., Fontenay-aux-Roses, France
Abstract :
This paper describes the realisation of a medium size CCC (30000:1 windings ratio) and the experimental optimisation of its sensitivity. First results reported on give a sensitivity of 7.7 /spl mu/A. turn per flux quantum.
Keywords :
amplifiers; cryogenic electronics; current comparators; sensitivity; cryogenic current comparator; current amplifier; sensitivity; Cryogenics; Electrons; Inductance; Josephson effect; Metrology; SQUIDs; Superconducting coils; Superconducting device noise; Superconductivity; Tunneling;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.699875
