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Field Quality Study of a 1-m-Long Single-Aperture 11-T \hbox {Nb}_{3}\hbox {Sn} Dipole Model for LHC Upgrades

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16 Author(s)
Chlachidze, G. ; Fermi Nat. Accel. Lab., Batavia, IL, USA ; DiMarco, J. ; Andreev, N. ; Apollinari, G.
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FNAL and CERN are carrying out a joint R&D program with the goal of building a 5.5-m-long twin-aperture 11-T Nb3Sn dipole prototype that is suitable for installation in the LHC. An important part of the program is the development and test of a series of short single-aperture and twin-aperture dipole models with a nominal field of 11 T at the LHC operation current of 11.85 kA and 20% margin. This paper presents the results of magnetic measurements of a 1-m-long single-aperture Nb3Sn dipole model fabricated and tested recently at FNAL, including geometrical field harmonics and effects of coil magnetization and iron yoke saturation.

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Applied Superconductivity, IEEE Transactions on  (Volume:24 ,  Issue: 3 )