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Abstract

Localized non-inductive currents due to electron cyclotron wave adsorption have been measured on the DIII-D tokamak. Clear evidence of non-inductive currents is seen on the internal magnetic field measurements by motional Stark effect spectroscopy. The magnitude and location of the non-inductive current is evaluated by comparing the total and ohmic current profiles of discharges with and without electron cyclotron wave power. The measured current agrees with Fokker-Planck calculations near the magnetic axis, but exceeds the predicted value as the location of the current drive is moved to the half-radius.

Additional information

Authors: LUCE T C, General Atomics, San Diego, California (US);LIN-LUI Y R, General Atomics, San Diego, California (US);LOHR J M, General Atomics, San Diego, California (US);PETTY C C, General Atomics, San Diego, California (US);POLITZER P A, General Atomics, San Diego, California (US);PRATER R, General Atomics, San Diego, California (US);HARVEY R W, CompX, Del Mar, California (US);GIRUZZI G, CEA Centre d'tudes de Cadarache, Saint-Paul-Lez-Durance (FR);RICE B W, Lawrence Livermore National Laboratory, Livermore, California (US)
Bibliographic Reference: Article: Plasma Physics Controlled Fusion, Vol. 41 (1999) pp. B119-B127
Availability: Plasma Physics Controlled Fusion (Journal)
Record Number: 200012740 / Last updated on: 2000-09-08
Category: PUBLICATION
Original language: en
Available languages: en
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