Title :
A high-temperature superconductor cryogenic current comparator
Author :
Elmquist, R.E. ; Dziuba, R.F.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
fDate :
June 27 1994-July 1 1994
Abstract :
NIST is developing a cryogenic current comparator (CCC) to operate at 77 K, using high-temperature superconductor (HTS) ceramic shields and a HTS-based superconducting quantum interference device (SQUID) detector. HTS shielding at low magnetic field levels is probably sufficient for high accuracy measurements. Unshielded sections of the ratio windings may produce a significant error.<>
Keywords :
SQUIDs; ceramics; comparators (circuits); electric current measurement; high-temperature superconductors; magnetic shielding; measurement standards; 77 K; NIST; SQUID detector; ceramic shields; error; high-temperature superconductor cryogenic current comparator; magnetic shielding; ratio windings; superconducting quantum interference device; unshielded sections; Ceramics; Cryogenics; Detectors; High temperature superconductors; Interference; Magnetic field measurement; Magnetic shielding; NIST; SQUIDs; Superconducting devices;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333415
