DocumentCode
837523
Title
Measured strain in Nb3Sn coils during excitation and quench
Author
Caspi, S. ; Bartlett, S.E. ; Dietderich, D.R. ; Ferracin, P. ; Gourlay, S.A. ; Hannaford, C.R. ; Hafalia, A.R. ; Lietzke, A.F. ; Mattafirri, S. ; Nyman, M. ; Sabbi, G.
Author_Institution
Lawrence Berkeley Nat. Lab., CA, USA
Volume
15
Issue
2
fYear
2005
fDate
6/1/2005 12:00:00 AM
Firstpage
1461
Lastpage
1464
Abstract
The strain in a high field Nb3Sn coil was measured during magnet assembly, cool-down, excitation and spot heater quenches. Strain was measured with a full bridge strain gauge mounted directly over the turns and impregnated with the coil. Two such coils were placed in a "common coil" fashion capable of reaching 11 T at 4.2 K. The measured steady state strain in the coil is compared with results obtained using the FEM code ANSYS. During quenches, the transient strain (due to temperature rise) was also measured and compared with the calculated mechanical time response to a quench.
Keywords
finite element analysis; niobium alloys; quenching (thermal); strain measurement; superconducting coils; tin alloys; 11 T; 4.2 K; ANSYS FEM code; Nb3Sn; Nb3Sn coil; cool down; excitation; magnet assembly; quench; strain gauge; strain measurement; superconducting coil; time response; Assembly; Bridges; Coils; Magnetic field induced strain; Magnetic field measurement; Niobium; Steady-state; Strain measurement; Temperature; Tin; Quench; strain gauge; superconducting;
fLanguage
English
Journal_Title
Applied Superconductivity, IEEE Transactions on
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/TASC.2005.849128
Filename
1439919
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