FIELD AND STRUCTURAL-ANALYSIS OF 56-MM APERTURE DIPOLE MODEL MAGNETS FOR THE LARGE HADRON COLLIDER

A new dipole model magnet design has been made with an aperture of 56 mm according to re-optimization of the accelerator design for the Larg e Hadron Collider (LHC) to be built at CERN, A feature of ''symmetric/ separate collar configuration'' in the new design proposed by KEK has been evaluated in terms of field quality and mechanical stability acco rding to the process of the magnet fabrication, cool-down and excitati ons. The analysis has been carried out by using the finite element ana lysis code ANSYS, in linkage of field analysis with structural analysi s. Effect of the deformation, due to electromagnetic force, on the fie ld quality has been also investigated. Results of the analysis will be presented.