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Biased Electrodes for SOL Control in NSTX

Conference ·
OSTI ID:1019374
 [1];  [2];  [1];  [3];  [1];  [1];  [1];  [4];  [4]
  1. Princeton Plasma Physics Laboratory (PPPL)
  2. Nova Photonics, Princeton, NJ
  3. Oak Ridge National Laboratory (ORNL)
  4. Lawrence Livermore National Laboratory (LLNL)
+ Show Author Affiliations
Small electrodes were installed in the outer-midplane edge of NSTX to attempt to control the local width of the scrape-off layer (SOL) by creating an outward E(pol)xB flow. When the applied voltage between electrodes was 90 V, the density between these electrodes increased by a factor of 3-10 over a radial width of similar to 4 cm. Thus a local control of the SOL plasma density was obtained. (C) 2009 Elsevier B.V. All rights reserved.
Research Organization:
Oak Ridge National Laboratory (ORNL)
Sponsoring Organization:
SC USDOE - Office of Science (SC)
DOE Contract Number:
AC05-00OR22725
OSTI ID:
1019374
Country of Publication:
United States
Language:
English

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Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Cells
Divertor
ELECTRODES
Fields
PLASMA DENSITY
Plasma Convection
Probe
SOLS
Tokamak