Author: Plum, M.A.
Paper Title Page
MOXBB101 Challenges facing High Power Proton Accelerators 1
  • M.A. Plum
    ORNL, Oak Ridge, Tennessee, USA
  Funding: ORNL/SNS is managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725.
This presentation will provide an overview of the challenges and experiences of high power proton accelerators such as SNS, J-PARC, etc. and what we have learned from experiences and how to mitigate beam losses.
slides icon Slides MOXBB101 [6.734 MB]  
THPFI011 Thermal Simulations of Charge-exchange Stripper Foils for High-melting-point Materials 3312
  • Y. Takeda
    KEK, Ibaraki, Japan
  • M.A. Plum
    ORNL, Oak Ridge, Tennessee, USA
  Charge-exchange stripper foils can be very quickly broken by high-current beams. Hence, a long-lived foil that can withstand prolonged beam irradiation is eagerly awaited. It is well known that the maximum temperature of the foil plays an important role in the foil lifetime. Therefore, the temperature distribution map and the maximum temperature of the foils were investigated in detail by using simulation software of the finite element method and applications with ANSYS. Moreover, the heating properties of several kinds of high-melting-point materials were researched. According to the results, stripper foils of the same effective thickness showed drastically different maximum temperatures, differing by up to about 200 K. From these results, we show that the emissivity and specific heat of the foil considerably influences its maximum temperature.