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Title: Study of Current Profile Evolution in Presence of Tearing Modes in DIII-D Hybrid Discharges

Conference ·
OSTI ID:15014363

An intermediate regime for tokamak operation has been obtained in DIII-D and in other tokamaks in which the inductive flux consumption is reduced and a broad current profile with the safety factor just above or near the sawtoothing limit is obtained and maintained. The DIII-D tokamak was operated in this regime near the no-wall b limit. High stability and good confinement was achieved at a desired level of q{sub 95} {approx} 3 to 4 for durations as long as 35{tau}{sub E}, three times the current-diffusion time. This regime offers the promise of achieving higher fusion gain and yield and/or longer burn duration for ITER.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
15014363
Report Number(s):
UCRL-CONF-204947; TRN: US0801192
Resource Relation:
Conference: Presented at: 31st EPS on Plasma Physics, London, United Kingdom, Jun 28 - Jul 02, 2004
Country of Publication:
United States
Language:
English