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Fabrication of the pre-series wide aperture superconducting quadrupoles for the LHC insertions

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7 Author(s)
Kirby, G.A. ; Accelerator Technol. Div., CERN, Geneva, Switzerland ; Lasheras, N.C. ; Ostojic, R. ; Burgmer, R..
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Individually powered superconducting quadrupoles with a coil bore of 70 mm will be installed in the LHC insertions, in areas where increased geometrical acceptance and improved field quality are required. The quadrupoles feature a four-layer coil, designed on the basis of two graded 8.3 mm wide Rutherford-type NbTi cables. The magnets have a magnetic length of 3.4 m and a nominal gradient of 160 T/m at 4.5 K and 3610 A. A total of 26 quadrupoles are in production at ACCEL Instruments (Germany). In this report, we present the experience in fabrication of the pre-series magnets and the results of the initial qualification tests.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:14 ,  Issue: 2 )

Date of Publication:

June 2004

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