Experimental study of a prototype dipole magnet with iron at T=80 K for the GSI fast cycling synchrotron

Author

Agapov, N. ; Averichev, S. ; Donyagin, A. ; Eliseeva, I. ; Karpunina, I. ; Khodzhibagiyan, H. ; Kovalenko, A. ; Kuznetsov, G. ; Kuzichev, V. ; Moritz, G. ; Muehle, C. ; Nikitaev, P. ; Starikov, A.

Author_Institution

Joint Inst. for Nucl. Res., Dudna, Russia

Volume

12

Issue

1

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

116

Lastpage

119

Abstract

Two new prototype dipole magnets for the proposed new fast cycling (f=1 Hz) synchrotron at GSI in Darmstadt have been designed, fabricated and tested. The magnets are based on a window frame iron yoke cooled by liquid nitrogen and a superconducting winding made from a hollow NbTi composite superconductor cable cooled with forced two-phase helium flow at T=4.5 K. The cold mass of the magnet is separated from the yoke by a small vacuum gap of 0.75 mm to 2.5 mm. A decrease of ac power losses by a factor of 2.3 in comparison with a standard Nuclotron dipole is obtained. The design features of two prototype dipoles as well as the test results are presented.

Keywords

accelerator magnets; ion accelerators; superconducting magnets; synchrotrons; 4.5 K; Fe; GSI; NbTi; NbTi composite superconductor; Nuclotron dipole; ac power losses; dipole magnets; fast cycling synchrotron; Iron; Magnetic separation; Niobium compounds; Nitrogen; Prototypes; Superconducting cables; Superconducting magnets; Synchrotrons; Testing; Titanium compounds;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2002.1018364

Filename

1018364