Title :
Field quality of the Fermilab Nb3Sn high field dipole model
Author :
Andreev, N. ; Chichili, D. ; Christensen, C. ; DiMarco, J. ; Kashikhin, V.V. ; Schlabach, P. ; Sylvester, C. ; Terechkine, I. ; Tompkins, J.C. ; Velev, G. ; Zlobin, A.V.
Author_Institution :
Fermi Nat. Accel. Lab., Batavia, IL, USA
Abstract :
A short Nb3Sn 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
Keywords :
accelerator magnets; eddy currents; magnetic field measurement; magnetisation; superconducting magnets; 10 to 12 T; 293 K; 4.3 K; Nb3Sn; Nb3Sn dipole model; coil magnetization; cos-theta coil; eddy currents; field quality; geometrical harmonics; liquid He temperature; magnetic field measurement; persistent currents; room temperature; snapback effect; Fabrication; Iron; Magnetic field measurement; Niobium; Superconducting cables; Superconducting coils; Superconducting magnets; Temperature measurement; Testing; Tin;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.988130
