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Design and assembly of the pre-series quadrupoles for the LHC insertions

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5 Author(s)
Ostojic, R. ; Accelerator Technol. Div., CERN, Geneva, Switzerland ; Lucas, J. ; Kirby, G. ; Perez, J.C.
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The LHC insertions are equipped with several different types of individually powered superconducting quadrupoles. These units comprise several quadrupole magnets and orbit correctors, and range in length from 5.3 m to 11.3 m. In spite of the variety of types and interface requirements, the design of the quadrupoles is based on the same principle where two welded half-shells provide the rigidity and alignment of the magnets and serve as a helium pressure vessel. In this paper we present the mechanical design of the LHC insertion quadrupoles, describe the initial experience in the assembly of the pre-series units, and report on the alignment measurements.

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