DIII-D Advanced Tokamak Research Overview

Conference · Wed Dec 01 00:00:00 EST 1999

OSTI ID:766827

Chan, V S; Greenfield, C M; Lao, L L; Luce, T C; Petty, C C; Staebler, G M

This paper reviews recent progress in the development of long-pulse, high performance discharges on the DIII-D tokamak. It is highlighted by a discharge achieving simultaneously {beta}{sub N}H of 9, bootstrap current fraction of 0.5, noninductive current fraction of 0.75, and sustained for 16 energy confinement times. The physics challenge has changed in the long-pulse regime. Non-ideal MHD modes are limiting the stability, fast ion driven modes may play a role in fast ion transport which limits the stored energy and plasma edge behavior can affect the global performance. New control tools are being developed to address these issues.

• Research Organization: General Atomics, San Diego, CA (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC03-99ER54463; W-7405-ENG-48; AC05-96OR22464; AC04-94AL85000; AC02-76CH03073; FG03-86ER53225; FG03-95ER54294
• OSTI ID: 766827
• Report Number(s): GA-A23312; TRN: US0110511
• Resource Relation: Conference: 2nd IAEA Technical Committee Meeting on Steady State Operation of Magnetic Fusion Devices, Fukuoka (JP), 10/25/1999--10/29/1999; Other Information: PBD: 1 Dec 1999
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BOOTSTRAP CURRENT
CONFINEMENT TIME
DOUBLET-3 DEVICE
PERFORMANCE
STABILITY