Published July 2007 | Version v1
Journal article Metadata-only

E x B plasma rotation and n=1 oscillation observed in the NSTX-CHI experiments

Creators

  • 1. University of Hyogo, Graduate School of Engineering, Himeji, Hyogo (Japan)
  • 2. University of Washington, Seattle, WA (United States)
  • 3. Lawrence Livermore National Laboratory, Livermore, CA (United States)
  • 4. Princeton Plasma Physics Laboratory, Princeton, NJ (United States)

Description

In the National Spherical Torus Experiment (NSTX), a peak plasma current up to 390 kA has been successfully generated by the Coaxial Helicity Injection (CHI) current drive method. The plasma rotation (∼ 20 km/s) driven in the E x B toroidal direction by CHI has been clearly identified by an ion Doppler spectroscopic measurement. The n=1 mode has been also observed to rotate in the same direction. This rotating kink behavior observed for the first time in NSTX is consistent with the electron locking model developed in the Helicity Injected Torus-II (HIT-II) experiments to explain the mechanism of CHI current drive. (author)

Additional details

Publishing Information

Journal Title
Plasma and Fusion Research
Journal Volume
2
Journal Page Range
p. 035.1-035.3
ISSN
1880-6821

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
39070667
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
DOPPLER EFFECT; ELECTRIC CURRENTS; EMISSION SPECTROSCOPY; ION TEMPERATURE; MAGNETIC FLUX; NON-INDUCTIVE CURRENT DRIVE; NSTX DEVICE; OSCILLATIONS; PLASMA DIAGNOSTICS; PLASMA MACROINSTABILITIES; ROTATING PLASMA; ROTATION
Descriptors DEC
CLOSED PLASMA DEVICES; CURRENTS; INSTABILITY; MOTION; PLASMA; PLASMA INSTABILITY; SPECTROSCOPY; SPHEROMAK DEVICES; THERMONUCLEAR DEVICES; TOKAMAK DEVICES