DocumentCode :
975720
Title :
Pulsed Magnets—Advances in Coil Design Using Finite Element Analysis
Author :
Witte, H. ; Gaganov, A. ; Kozlova, N. ; Freudenberger, J. ; Jones, H.
Author_Institution :
Clarendon Lab., Oxford Univ.
Volume :
16
Issue :
2
fYear :
2006
fDate :
6/1/2006 12:00:00 AM
Firstpage :
1680
Lastpage :
1683
Abstract :
We discuss further developments in the application of Finite Element Analysis (FEA) to the design of pulsed magnets on the basis of our latest coil design. Two areas are addressed. Firstly, we present results concerning the current distribution in the conductor during the discharge. Eddy current heating leads to thermal gradients across the layers and in the conductor; the results are compared with well established analytical codes. Significantly higher stresses result due to temperature gradients and nonuniform current distribution, which can be partly offset by pre-stressing reinforcement fibers. Secondly, we report progress in designs that facilitate much more rapid cool-downs for pulsed magnets, which can sometimes take in the order of hours between pulses. We show that cool-down times of 20 minutes or less are achievable using copper discs (designed using FEA) that will not support eddy currents
Keywords :
current distribution; eddy currents; finite element analysis; superconducting coils; superconducting magnets; FEA; coil design; copper discs; current distribution; eddy current heating; finite element analysis; prestressing reinforcement fibers; pulsed magnets; temperature gradients; thermal gradients; Coils; Conductors; Current distribution; Eddy currents; Finite element methods; Heating; Magnetic analysis; Magnets; Thermal conductivity; Thermal stresses; Magnet design; numerical simulation; pulse magnet;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2005.864485
Filename :
1643183
Link To Document :
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