Title :
Results from a detailed calculation of the sensitivity of a cryogenic current comparator
Author :
Early, M.D. ; van Dam, M.A.
Author_Institution :
Meas. Stand. Lab., Ind. Res. Ltd., Lower Hunt, New Zealand
Abstract :
A detailed calculation of the sensitivity of a cryogenic current comparator (CCC) has been completed. The model accounts for the current distribution on the closed external shield and the overlapped shield around the windings. Additional refinements to the model lead to excellent agreement with sensitivity measurements for a range of CCC geometries.
Keywords :
SQUIDs; current comparators; current distribution; electric current measurement; electric resistance measurement; measurement standards; sensitivity; SQUID inductance; closed external shield; cryogenic current comparator; current distribution; model; overlapped shield; pick-up coil; ratio windings; resistance measurement; sensitivity calculation; small currents measurement; Cryogenics; Current distribution; Electrical resistance measurement; Geometry; Inductance; SQUIDs; Solid modeling; Strips; Superconducting coils; Superconducting filaments and wires;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.699840
