A Simplified Structural Model for the Analysis of Shape Deformations of the LHC Superconducting Dipole Cold Mass

In superconducting magnets for particle accelerators the mechanical accuracy along the length of the Cold Mass is one of the crucial parameters to guarantee the field quality needed by beam dynamics. This issue is made even more challenging in the twin-aperture LHC superconducting dipole where toler...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2006-06, Vol.16 (2), p.433-436
Main Authors: La China, M., Wildner, E., Scandale, W.
Format: Article
Language:English
Subjects:
Applied sciences
Assembly
Cyclic accelerators and storage rings
Deformable models
Deformation
Dipoles
Electrical engineering. Electrical power engineering
Electromagnets
Exact sciences and technology
Experimental methods and instrumentation for elementary-particle and nuclear physics
Large Hadron Collider
Large scale superconductivity
LHC project
Linear particle accelerator
Magnetic analysis
Materials handling
Mathematical models
Nuclear physics
Particle accelerators
Particle beams
Physics
Predictive models
Shape
Solid modeling
structural models
Superconducting magnets
Superconductivity
Tolerances
Various equipment and components
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Summary:In superconducting magnets for particle accelerators the mechanical accuracy along the length of the Cold Mass is one of the crucial parameters to guarantee the field quality needed by beam dynamics. This issue is made even more challenging in the twin-aperture LHC superconducting dipole where tolerances in the 0.3-1 mm range shall be obtained over a length of 15 m, for a Cold Mass of about 30 t which, to minimize thermal losses, is supported in three points only. To reach this goal a number of geometrical checks and analyses are carried out at all stages of magnet assembly, handling, installation and operation. In this paper we present the structural model of the dipole based on which the checks and the analysis are performed, the nature of the geometrical imperfections identified and the temporary or permanent shape modifications predicted
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2006.870019