N. Andreev, D. Chichili, C. Christensen, J. DiMarco, V. Kashikhin, P. Schlabach, C. Sylvester, I. Terechkine, J. Tompkins, G. Velev, A. Zlobin
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Field quality of the Fermilab Nb/sub 3/Sn high field dipole model
A short Nb/sub 3/Sn dipole model based on a single-bore cos-theta coil with a cold iron yoke has been fabricated and tested at Fermilab. Field quality was measured at room temperature during magnet fabrication and at liquid helium temperature. This paper reports the results of magnetic measurements. The geometrical harmonics, coil magnetization effects caused by persistent currents in the superconductor, eddy currents in the cable, and the "snapback" effect at injection are presented and compared with theoretical predictions.
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