Analysis of the mechanical behaviour of a 11.5 T Nb3Sn LHC dipole magnet according to the ring collar concept

Ouden den, A. and Kate ten, H.H.J. and Avest ter, D. and Emden van, W. and Daum, C. (1992) Analysis of the mechanical behaviour of a 11.5 T Nb3Sn LHC dipole magnet according to the ring collar concept. IEEE transactions on magnetics, 28 (1). pp. 331-334. ISSN 00189464

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Abstract:	According to the CERN-LHC (Large Hadron Collider) reference design, 10-tesla twin-aperture NbTi dipoles will be built with split collars that enclose both apertures. As part of the development program towards an experimental 11.5-tesla Nb3Sn LHC dipole magnet, the mechanical implications of an alternative collar concept have been studied with a finite element analysis. In this concept ring shaped collars are shrunk on each finished single aperture coil, thus providing the necessary room-temperature prestress. This system results in a major improvement of the stress distribution in the collars. It is noted that introduction of friction at the sliding planes can cause reopening of the gap between the yoke halves during excitation. This depends strongly on the value of the friction coefficients
Item Type:	Article
Copyright:	©1992 IEEE
Link to this item:	http://purl.utwente.nl/publications/23719
Official URL:	http://dx.doi.org/10.1109/20.119878
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