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Theses

Correlation between magnetic field quality and mechanical components of the Large Hadron Collider main dipoles

Abstract : The 1234 superconducting dipoles of the Large Hadron Collider, working at a cryogenic temperature of 1.9 K, must guarantee a high quality magnetic field to steer the particles inside the beam pipe. Magnetic field measurements are a powerful way to detect assembly faults that could limit magnet performances. The aim of the thesis is the analysis of these measurements performed at room temperature during the production of the dipoles. In a large scale production the ideal situation is that all the magnets produced were identical. However all the components constituting a magnet are produced with certain tolerance and the assembly procedures are optimized during the production; due to these the reality drifts away from the ideal situation. We recollected geometrical data of the main components and coupling them with “ad hoc” electro-
magnetic models we reconstructed a multipolar field representation of the LHC dipoles defining their critical components and assembling procedures.
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Submitted on : Thursday, May 29, 2008 - 4:58:55 PM
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  • HAL Id : tel-00283357, version 1

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Boris Bellesia. Correlation between magnetic field quality and mechanical components of the Large Hadron Collider main dipoles. Other. Université Blaise Pascal - Clermont-Ferrand II, 2006. English. ⟨tel-00283357⟩

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