Author: Blokland, W.
Paper Title Page
WEC2C2
Two-Dimensional Temperature Measurements of Nanocrystalline Diamond Stripper Foils at High Intensity Hydrogen Ion Beams at SNS  
 
  • A.R. Oguz, W. Blokland
    ORNL, Oak Ridge, Tennessee, USA
  • N.J. Evans
    ORNL RAD, Oak Ridge, Tennessee, USA
 
  Funding: This manuscript has been authored by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy.
We propose and demonstrate a time-resolved, two-dimensional temperature monitoring technique for nanocrystalline diamond stripper foils exposed to high-intensity H- beams at the Spallation Neutron Source (SNS) accumulator ring. The technique utilizes a two-color imaging pyrometer in the shortwave infrared (SWIR) spectral band to measure thermal radiation from stripper foils located 40 meters away from the measurement site. This work presents a unique optical design, optical calibration of the system using a high-temperature blackbody source, preliminary temperature measurement results from two stripper foils (new and used) under various H- production beam conditions with average powers up to 1.7~MW and energy of 1.0~GeV. The technique we developed could be utilized to understand the thermal behavior of charge strippers under high-intensity particle beams and may lead to significant improvements in their lifetime in high-intensity particle accelerator.
 
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