SPIKE VOLTAGES SEEN DURING QUICK CHARGE RAMP LIMITATION TESTS ON NB3SN CABLE-IN-CONDUIT CONDUCTORS

Authors
TAKAYASU M VYSOTSKY VS JEONG S MICHAEL PC SCHULTZ JH MINERVINI JV
Citation
M. Takayasu et al., SPIKE VOLTAGES SEEN DURING QUICK CHARGE RAMP LIMITATION TESTS ON NB3SN CABLE-IN-CONDUIT CONDUCTORS, IEEE transactions on applied superconductivity, 7(2), 1997, pp. 150-154
Citations number
17
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on applied superconductivity → ACNP
ISSN journal
10518223
Volume
7
Issue
2
Year of publication
1997
Part
1
Pages
150 - 154
Database
ISI
SICI code
1051-8223(1997)7:2<150:SVSDQC>2.0.ZU;2-Z
Abstract
Spike voltages observed during ramp rate limitation tests on sub-sized Nb3Sn cable-in-conduit superconductors are analyzed using a current l oop model. The effects of loop currents on the ramp rate limitations o f multi-strand superconducting cables are discussed. Current existing in multistrand cables generate excess local currents that quench stran ds and produce voltage spikes. Experimental results previously reporte d as abnormal ramp rate limitations are explained by loop current phen omena.