DocumentCode
971980
Title
Voltage Spikes in 
and NbTi Strands
Author
Bordini, B. ; Ambrosio, G. ; Barzi, E. ; Carcagno, R. ; Feher, S. ; Kashikhin, V.V. ; Lamm, M.J. ; Orris, D. ; Tartaglia, M. ; Tompkins, J.C. ; Turrioni, D. ; Yamada, R. ; Zlobin, A.V.
Author_Institution
Fermi Nat. Accel. Lab.
Volume
16
Issue
2
fYear
2006
fDate
6/1/2006 12:00:00 AM
Firstpage
366
Lastpage
369
Abstract
As part of the High Field Magnet program at Fermilab several NbTi and Nb3Sn strands were tested with particular emphasis on the study of voltage spikes and their relationship to superconductor instabilities. The voltage spikes were detected under various experimental conditions using voltage-current (V-I) and voltage-field (V-H) methods. Two types of spikes, designated ´magnetization´ and ´transport current´ spikes, have been identified. Their origin is most likely related to magnetization flux jump and transport current redistribution, respectively. Many of the signals observed appear to be a combination of these two types of spikes; the combination of these two instability mechanisms should play a dominant role in determining the minimum quench current
Keywords
accelerator magnets; critical currents; magnetisation; niobium alloys; particle accelerators; superconducting magnets; superconducting materials; tin alloys; titanium alloys; transport processes; Fermilab; Nb3Sn; Nb3Sn strands; NbTi; NbTi Strands; magnetization flux jump; magnetization spikes; quench current; superconducting accelerator magnets; superconductor instabilities; transport current redistribution; transport current spikes; voltage spikes; voltage-current methods; voltage-field methods; Conductors; Magnetic flux; Niobium compounds; Signal generators; Superconducting cables; Superconducting magnets; System testing; Tin; Titanium compounds; Voltage; Instability; magnet; voltage spike;
fLanguage
English
Journal_Title
Applied Superconductivity, IEEE Transactions on
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/TASC.2006.871319
Filename
1642864
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