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The quadrupole magnets for the LHC injection transfer lines

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14 Author(s)
Chertok, I. ; Inst. of Nucl. Phys., Acad. of Sci., Novosibirsk, Russia ; Chumakov, S. ; Churkin, I. ; Golubenko, O.
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Two injection transfer lines, each about 2.8 km long, are being built to transfer protons at 450 GeV from the Super Proton Synchrotron (SPS) to the Large Hadron Collider (LHC). A total of 180 quadrupole magnets are required; they are produced in the framework of the contribution of the Russian Federation to the construction of the LHC. The classical quadrupoles, built from laminated steel cores and copper coils, have a core length of 1.4 m, an inscribed diameter of 32 mm and a strength of 53.5 T/m at a current of 530 A. The total weight of one magnet is 1.1 ton. For obtaining the required field quality at the small inscribed diameter, great care in the stamping of the laminations and the assembly of quadrants is necessary, Special instruments have been developed to measure, with a precision of some /spl mu/m, the variations of the pole gaps over the full length of the magnet and correlate them to the obtained field distribution, The design has been developed in a collaboration between BINP and CERN. Fabrication and the magnetic measurements are done at BINP and should be finished at the end of the year 2000.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:10 ,  Issue: 1 )

Date of Publication:

March 2000

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