Title :
Manufacture and test of a 5 T bi-2223 insert coil
Author :
Beckenbach, M. ; Hornung, F. ; Kläser, M. ; Leys, P. ; Lott, B. ; Schneider, Th
Author_Institution :
Inst. for Tech. Phys., Forschungszentrum Karlsruhe, Germany
fDate :
6/1/2005 12:00:00 AM
Abstract :
With the goal of obtaining a magnetic field of 25 T in our facility HOMER II with a superconducting LTS-HTS hybrid magnet, a first prototype 5 T high temperature superconducting (HTS) insert coil has been constructed and tested. The HTS insert consists of 16 double pancakes made of stainless steel reinforced Bi-2223 tapes manufactured by American Superconductor. The HTS coil was operated at 1.8 K and produced 5.4 T at a current of 151.2 A. In a background field of 11.5 T provided by our facility HOMER I, a total field of 16.9 T was obtained several times. No training or quench of the coil was observed during the test, but after warming up a defect in the winding of one double pancake was detected, presumably due to a ballooning of the tape. The design of the coil and the results of the test are presented and discussed.
Keywords :
bismuth compounds; electronic equipment manufacture; magnetic fields; materials testing; superconducting coils; superconducting tapes; (BiPb)2Sr2Ca2Cu3O10; 1.8 K; 151.2 A; 5 T; American Superconductor; Bi-2223 insert coil manufacture; Bi-2223 insert coil testing; HOMER I; HOMER II; coil design; double pancake; high temperature superconductor; magnetic field; stainless steel reinforced Bi-2223 tape; superconducting LTS-HTS hybrid magnet; winding defect; High temperature superconductors; Magnetic fields; Magnetic properties; Manufacturing; Prototypes; Steel; Superconducting coils; Superconducting films; Superconducting magnets; Testing; BSSCO wires; critical current; hybrid LTS-HTS magnets; n-value;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.849137
