Voltage spikes in Nb3Sn and NbTi strands

Conference · Thu Sep 01 04:00:00 EDT 2005

OSTI ID:892273

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

As part of the High Field Magnet program at Fermilab several NbTi and Nb{sub 3}Sn 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.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 892273
• Report Number(s): FERMILAB-CONF-05-401-TD
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
Accelerators
FERMILAB
INSTABILITY
MAGNETIC FLUX
MAGNETIZATION
MAGNETS
ORIGIN
SUPERCONDUCTORS
TRANSPORT