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Reeves, S.R.

Paper Title Page
FPAT032 NuMI Proton Kicker Extraction Magnet Termination Resistor System 2224
 
  • S.R. Reeves, C.C. Jensen
    Fermilab, Batavia, Illinois
 
  Funding: Fermilab is operated by Universities Research Association Inc. under Contract No. DE-AC02-76CH03000 with the U.S. Department of Energy.

The temperature stability of the kicker magnet termination resistor assembly directly affects the field flatness and amplitude stability of the kick. Comprehensive thermal enhancements were made to the existing Main Injector resistor assembly design to satisfy NuMI performance specifications. Additionally, a fluid-processing system utilizing FluorinertŪ FC-77 high-voltage dielectric was built to precisely control the setpoint temperature of the resistor assembly from 70 to 120F, required to maintain constant resistance during changing operational modes. The FluorinertŪ must be continually processed to remove hazardous breakdown products caused by radiation exposure to prevent chemical attack of system components. Design details of the termination resistor assembly and FluorinertŪ processing system are described. Early performance results will be presented.