DocumentCode :
1239245
Title :
Cored Rutherford cables for the GSI fast ramping synchrotron
Author :
Wilson, M.N. ; Ghosh, A.K. ; Ten Haken, B. ; Hassenzahl, W.V. ; Kaugerts, J. ; Moritz, G. ; Muehle, C. ; Ouden, A. Den ; Soika, R. ; Wanderer, P. ; Wessel, W.A.J.
Author_Institution :
Brook House, Abingdon, UK
Volume :
13
Issue :
2
fYear :
2003
fDate :
6/1/2003 12:00:00 AM
Firstpage :
1704
Lastpage :
1709
Abstract :
The new heavy ion synchrotron facility proposed by GSI will have two superconducting magnet rings in the same tunnel, with rigidities of 200 T·m and 100 T·m. Fast ramp times are needed, which can cause significant problems for the magnets, particularly in the areas of ac loss and field distortion. This paper discusses the 200 T·m ring, which will use Cosθ magnets based on the RHIC dipole design. We discuss the reasons for choosing Rutherford cable with a resistive core and report loss measurements carried out on cable samples. These measurements are compared with theoretical calculations using measured values of inter-strand resistance. Reasonably good agreement is found, but there are indications of nonuniformity in the adjacent resistance Ra. Using these measured parameters, losses and temperature rise are calculated for a RHIC dipole in the operating cycle of the accelerator. A novel insulation scheme designed to promote efficient cooling is described.
Keywords :
accelerator magnets; ion accelerators; losses; superconducting cables; superconducting magnets; synchrotrons; GSI fast ramping synchrotron; RHIC dipole design; ac loss; accelerator operating cycle; adjacent resistance nonuniformity; cored Rutherford cables; efficient cooling; fast ramp times; field distortion; field error; heavy ion synchrotron facility; insulation scheme; inter-strand resistance; loss measurements; resistive core; rigidities; superconducting magnet rings; superconducting synchrotron; temperature rise; Distortion measurement; Electrical resistance measurement; Insulation; Loss measurement; Magnetic cores; Magnetic field measurement; Superconducting cables; Superconducting magnets; Synchrotrons; Temperature;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2003.812864
Filename :
1211934
Link To Document :
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