Author: Prestemon, S.
Paper Title Page
TUP10 HTS Magnet Technology as Path to Fourth and Fifth Generation ECR Ion Sources 97
  • T. Shen, D. Arbelaez, L. Garcia Fajardo, D. Leitner, S. Prestemon, G.L. Sabbi
    LBNL, Berkeley, California, USA
  Novel superconducting magnet systems for ECR ion sources (ECRIS) operating at frequencies of 28 GHz and above is a core technology to be developed over the next many years. Current state-of-the-art magnet systems are based on Nb-Ti technology at 4.2 K and have become the bases for next generation heavy ion beam facilities injector sources. However, increasing the frequency beyond 28 GHz will further advance the performance of high charge state ECR ion sources. Nb3Sn provides an immediate option for reaching higher frequencies, but Nb3Sn designs would ultimately be limited to about 56 GHz. A versatile longer-term option is the use of high-temperature superconducting magnet technologies, which can enable possible operations of >37.5 GHz ECR ion sources at >20 K. The ultimate limit of HTS magnet systems is not limited to 37.5 GHz but in principle could even attain 84 GHz, due to the greater than 100 T magnetic field limit of several HTS materials. The paper will discuss the conceptual design options for such a magnet systems and R&D steps towards realizing such a system.  
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