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Open Access Publications from the University of California

Development of Wind-and-React Bi-2212 Accelerator Magnet Technology

  • Author(s): Godeke, A.;
  • Cheng, D.;
  • Dietderich, D.R.;
  • English, C.D.;
  • Felice, H.;
  • Hannaford, C.R.;
  • Prestemon, S.O.;
  • Sabbi, G.;
  • Scanlan, R.M.;
  • Hikichi, Y.;
  • Nishioka, J.;
  • Hasegawa, T.
  • et al.

We report on the progress in our R&D program, targeted to develop the technology for the application of Bi2Sr2CaCu2Ox (Bi-2212) in accelerator magnets. The program uses subscale coils, wound from insulated cables, to study suitable materials, heat treatment homogeneity, stability, and effects ofmagnetic field and thermal and electro-magnetic loads. We have addressed material and reaction related issues and report onthe fabrication, heat treatment, and analysis of subscale Bi-2212 coils. Such coils can carry a current on the order of 5000 A and generate, in various support structures, magnetic fields from 2.6 to 9.9 T. Successful coils are therefore targeted towards a hybrid Nb3Sn-HTS magnet which will demonstrate the feasibility of Bi-2212 for accelerator magnets, and open a new magnetic field realm, beyond what is achievable with Nb3Sn.

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