Full Paper
Contents  Return  Previous Page  Next Page  Index

Return To: Session PD/T - Post Deadline Talks
Prev Page: Session PD/T - Post Deadline Talks
Next Page: (PD/T-2) Formation of an Advanced Tokamak Plasma without

(PD/T-1) Self-Consistent, Integrated, Advanced Tokamak Operation in DIII-D

M.R. Wade1), M. Murakami1), T.C. Luce2), J.R. Ferron2), C.C. Petty2), D.P. Brennan3), A.M. Garofalo4), C.M. Greenfield2), A.W. Hyatt2), R. Jayakumar5), R.J. La Haye2), L.L. Lao2), J. Lohr2), P.A. Politzer2), R. Prater2), E.J. Strait2)
1) Oak Ridge National Laobratory, Oak Ridge, Tennessee, USA
2) General Atomics, San Diego, California, USA
3) Oak Ridge Institute for Science Education, Oak Ridge, Tennessee, USA
4) Columbia University, New York, New York
5) Lawrence Livermore National Laboratory, Livermore, California, USA

Abstract.  Recent experiments on DIII-D have demonstrated the ability to sustain plasma conditions that integrate and sustain the key ingredients of Advanced Tokamak (AT) operation: high $ \beta$ with qmin  $ \gg$  1, good energy confinement, and high current drive efficiency. Utilizing off-axis ( $ \rho$  =  0.4) electron cyclotron current drive (ECCD) to modify the current density profile in a plasma operating near the no-wall ideal stability limit with qmin  >  2.0, plasmas with $ \beta$  $ \approx$   2.9% and 90% of the plasma current driven non-inductively have been sustained for nearly 2 s (limited only by the duration of the ECCD pulse. Separate experiments have demonstrated the ability to sustain a steady current density profile using ECCD for periods as long as 1 s with $ \beta$ = 3.3% and > 90% of the current driven non-inductively.

Read the full paper in PDF format.

IAEA 2003