Title :
A HTS cryogenic current comparator with a thick-film YBCO toroidal shield: recent investigations
Author :
Ani, E. ; Boella, G. ; Pavese, F. ; Negro, A. ; Vanolo, M. ; Dagnino, C. ; Laberti, P.
Author_Institution :
Politecnico di Torino, Italy
Abstract :
The paper reports on studies and results about the implementation of a novel type of Cryogenic Current Comparator (CCC), designed for work at liquid nitrogen temperature. The studies are particularly aimed at the realization of the CCC shield by means of an extended thick film of the YBCO high-temperature superconductor (HTS), deposited onto a metallic substrate with the HVOF technique. Recent investigations on the proposed open-toroidal open-tube geometry are presented, regarding both numerical treatment of a mathematical model and error-ratio attenuation measurements performed using a fluxgate magnetometer
Keywords :
barium compounds; cryogenics; current comparators; electric current measurement; electromagnetic shielding; high-temperature superconductors; superconducting devices; superconducting thin films; yttrium compounds; 77 K; HTS cryogenic current comparator; HVOF technique; YBCO high-temperature superconductor; YBaCuO; error-ratio attenuation measurements; fluxgate magnetometer measurements; high velocity oxygen fuel technique; liquid nitrogen temperature; mathematical model; metallic substrate; open-toroidal open-tube geometry; thick-film YBCO toroidal shield; Attenuation measurement; Cryogenics; Geometry; High temperature superconductors; Mathematical model; Nitrogen; Substrates; Thermal spraying; Thick films; Yttrium barium copper oxide;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1999. IMTC/99. Proceedings of the 16th IEEE
Conference_Location :
Venice
Print_ISBN :
0-7803-5276-9
DOI :
10.1109/IMTC.1999.777053
