Author: Fink, R.L.
Paper Title Page
WEPSB052 The Use of Graphene as Stripper Foils in the Siemens Eclipse Cyclotron 483
 
  • S. Korenev, R. Dishman, A. Martin Yebra
    Siemens Medical Solutions Molecular Imaging, Knoxville, TN, USA
  • R.L. Fink, I. Pavlovsky
    ANI, Austin, USA
  • N.D. Meshcheryakov, I.B. Smirnov
    Siemens Healthcare, Moscow, Russia
 
  This paper presents the results of an experimental study for the use of graphene foils as an extractor (stripper) foil in the 11-MeV Siemens Eclipse Cyclotron. The main advantage of graphene foils compared with carbon and graphite foils is its very high thermal conductivity. The graphene also has significant mechanical strength for atomically thin carbon layers. The life time of these foils is more than 18,000 mkA*H. The graphene foils showed a significant increase in the transmission factor (the ratio of the beam current on the stripper foil to the current on the target), which was approximately 90%. The technology in fabricating these graphene foils is shown. The pros and cons of using the graphene material as a stripper foil in cyclotrons are analyzed.  
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