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Impact of a poloidal divertor in ignition tokamak design

Journal Article · · Fusion Technology
OSTI ID:1024764
 [1];  [1];  [2];  [3];  [4];  [5]
  1. ORNL
  2. Grumman Aerospace
  3. Science Applications International Corporation (SAIC), Oak Ridge, TN
  4. McDonnell Douglas Aerospace
  5. University of Tennessee, Knoxville (UTK)

System design studies were performed to assess the effect of assuming a poloidal divertor instead of a limiter as a means of impurity control for ignition tokamak configurations. Results show that for the nominal Tokamak Fusion Core Experiment (TFCX) device with superconducting TF coils, a feasible poloidal divertor configuration can be obtained without increasing the major radius. In the TFCX nominal copper TF coil device, however, field limits at the PF coils are exceeded when the effects of asymmetry associated with a poloidal divertor are included. It was found that a 12% increase in the major radius of this device is necessary to simultaneously satisfy the plasma-shaping requirements of a poloidal divertor and the magnetics constraints at the superconducting PF coils.

Research Organization:
Oak Ridge National Laboratory (ORNL)
Sponsoring Organization:
SC USDOE - Office of Science (SC)
DOE Contract Number:
AC05-00OR22725
OSTI ID:
1024764
Journal Information:
Fusion Technology, Journal Name: Fusion Technology Journal Issue: 1 Vol. 8; ISSN 0748-1896; ISSN FUSTE8
Country of Publication:
United States
Language:
English