-Mode Operation in the START Spherical Tokamak
- 17 January 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 84 (3), 495-498
- https://doi.org/10.1103/physrevlett.84.495
Abstract
-mode operation has been achieved in high current plasmas in the START spherical tokamak for both neutral-beam-injection-heated and Ohmic discharges. The transition to mode features the development of well-defined edge pedestals in density and temperature, which signifies the formation of an edge-transport barrier, and associated edge-localized modes. Recent operation at plasma currents exceeding 250 kA shows that these features are accompanied by increases in energy confinement time. This is the first clear demonstration of the -mode regime in a spherical tokamak.
This publication has 11 references indexed in Scilit:
- The spherical tokamak programme at CulhamNuclear Fusion, 1999
- H-mode power threshold and confinement in JET H, D, D-T and T plasmasPlasma Physics and Controlled Fusion, 1999
- Achievement of Recordin the START Spherical TokamakPhysical Review Letters, 1998
- Enhanced performance in the START tokamakPlasma Physics and Controlled Fusion, 1998
- High-performance discharges in the Small Tight Aspect Ratio Tokamak (START)Physics of Plasmas, 1998
- Improved confinement regimes within the transport model of canonical profilesNuclear Fusion, 1995
- First results from the START experimentNuclear Fusion, 1992
- Reconstruction of current profile parameters and plasma shapes in tokamaksNuclear Fusion, 1985
- Development of an Edge Transport Barrier at the H-Mode Transition of ASDEXPhysical Review Letters, 1984
- Energy confinement scaling in Tokamaks: some implications of recent experiments with Ohmic and strong auxiliary heatingPlasma Physics and Controlled Fusion, 1984