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Inner triplet corrector package MQSXA for the LHC

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3 Author(s)
Karppinen, M. ; Eur. Organ. for Nucl. Res., CERN, Geneva, Switzerland ; Perez, J.C. ; Senis, R.

The eight inner triplets of the LHC will each house a combined corrector magnet assembly, MQSXA, which comprises a skew quadrupole (MQSX) in line with nested skew octupole (MCOSX), octupole (MCOX), and skew sextupole (MCSSX) windings. These superconducting single-aperture magnet assemblies have a bore of 70 mm diameter, and the complete MQSXA assemblies are 530 mm long, have an outer diameter of 180 mm and an approximate mass of 90 kg. In the inner triplets the MQSXA assemblies are flanged to the end plate of the high gradient quadrupoles (MQX). This paper presents the main design features of the MQSXA and the experience gained with the prototype of the nested part of this magnet assembly, which has been built at CERN. The results of the training tests at 4.3 K and 1.9 K together with the cold magnetic measurements are given.

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Applied Superconductivity, IEEE Transactions on  (Volume:12 ,  Issue: 1 )