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Alessandria, F.

Paper Title Page
WEOBM01 R&D Activities Aimed at Developing a Curved Fast Ramped Superconducting Dipole for FAIR SIS300 1950
 
  • P. Fabbricatore, S. Farinon, R. Musenich
    INFN Genova, Genova
  • F. Alessandria, G. Bellomo, G. Volpini
    INFN/LASA, Segrate (MI)
  • U. Gambardella
    INFN/LNF, Frascati (Roma)
  • J. E. Kaugerts, G. Moritz
    GSI, Darmstadt
  • R. Marabotto
    ASG, Genova
  • M. Sorbi
    Universita' degli Studi di Milano & INFN, Segrate
 
  One of the basic components of the FAIR facility, under development at GSI, is the synchrotron SIS300 (300 Tm rigidity). In order to reach the required high intensities of proton and heavy ion beams, the magnets of this synchrotron have to be pulsed from the injection magnetic field of 1.5 T up to 4.5 T maximum field at the rate of 1 T/s. These 7.8 m long, cos-teta shaped coils with a 100 mm bore have the particular characteristic to be curved (the sagitta is 114 mm). All these aspects demand for a challenging R&D, aimed at the development of a low loss conductor and of a suitable winding technology for curved coil. Further design issues are related to the optimization of the stress distribution involving materials able to hold 107 cycles and to the maximization of the heat transfer to coolant (supercritical helium at 4.7 K). At the present time, design activities are going on with the aim to design, construct and test a 3.8 m long prototype within 2009. In order to achieve this objective, several intermediate milestones are included in the R&D program. One of the most challenging is the industrial development of a method for winding a curved cos-teta dipole.  
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