Testing of TAMU1: A single-aperture block-coil dipole

Author

Battle, C. ; Blackburn, R. ; Diaczenko, N. ; Elliott, T. ; Gaedke, R. ; Henchel, W. ; Hill, E. ; Johnson, M. ; Kautzky, H. ; McInturff, A. ; McIntrye, J. ; McIntrye, P. ; Sattarov, A. ; Benjegerdes, H.R. ; Bish, P. ; Byford, D. ; Hannaford, R. ; Lietzke,

Author_Institution

Texas A&M Univ., College Station, TX, USA

Volume

5

fYear

2001

fDate

2001

Firstpage

3642

Abstract

The NbTi model dipole TAMU1 was successfully tested at Lawrence Berkeley Lab. The dipole reached 88% of short-sample current on the first quench, and trained rapidly to 98%. The incorporated quench heaters were capable of inducing a plateau quench in <10 msec. The splice resistance was measured to be 0.28 nΩ in the multi-kA range, indicating an excellent contact. AC loss properties were studied during ramp studies. Ramps to 1,000 A/s (0.9 T/s) operated at greater than 60% plateau current. The dipole is a success. It is significant that this high-field NbTi dipole operated successfully at short-sample current with minimal training, even though the coil was vacuum-impregnated with epoxy. We attribute this performance in part to the stress management that is integrated into the block-coil geometry

Keywords

accelerator magnets; niobium compounds; superconducting magnets; AC loss properties; NbTi model dipole; TAMU1; block-coil geometry; incorporated quench heaters; plateau quench; short-sample current; single-aperture block-coil dipole; splice resistance; stress management; Geometry; Magnetic flux; Magnetic materials; Niobium compounds; Stress; Superconducting coils; Superconducting magnets; Testing; Titanium compounds; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001

Conference_Location

Chicago, IL

Print_ISBN

0-7803-7191-7

Type

conf

DOI

10.1109/PAC.2001.988205

Filename

988205