Paper |
Title |
Page |
MPPT042 |
Field Quality and Alignment of the Series Produced Superconducting Matching Quadrupoles for the LHC Insertions
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2738 |
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- N. Catalan-Lasheras, G. Kirby, R. Ostojic, J.C. Perez, H. Prin, W. Venturini Delsolaro
CERN, Geneva
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The production of the superconducting quadrupoles for the LHC insertions is advancing well and about half of the magnets have been produced. The coil size and field measurements performed on individual magnets both in warm and cold conditions are yielding significant results. In this paper we present the procedures and results of steering the series production at the magnet manufacturers and the assembly of cold masses at CERN. In particular, we present the analysis of warm-cold correlations and hysteresis of the main field multipoles, the correlation between coil sizes and geometrical field errors and the effect of permeability of magnet collars. The results are compared with the target errors for field multipoles and alignment.
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MPPT043 |
Low-Beta Quadrupole Designs for the LHC Luminosity Upgrade
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2795 |
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- R. Ostojic, N. Catalan-Lasheras, G. Kirby
CERN, Geneva
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Several candidate scenarios are considered for the upgrade of the LHC insertions in view of increasing the luminosity in excess of 1034 cm-2s-1. In all cases, superconducting low-beta quadrupoles with apertures in the range of 90-110 mm are required in view of increased heat loads and beam crossing angles. We present possible low-beta quadrupole designs based on Nb3Sn and NbTi superconducting cables, including existing LHC-class superconductors, present scaling laws for the magnet parameters and discuss relative advantages of the underlying triplet layouts.
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