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Return To: Session EXP1 - Particle Transport, Internal Transport Barriers,
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(This paper was rapporteured in lecture CD2/EX9/4)
The JET Team 1 (presented by
F. X. Söldner )
1 See Appendix to IAEA-CN-69/OV1/2
JET Joint Undertaking, Abingdon, Oxfordshire, United Kingdom
Abstract
Internal Transport Barriers
characteristic for the Optimised Shear regime and an edge transport barrier of
an ELMy H-mode regime have been superposed in the Double Barrier mode. In DT
discharges the Double Barrier mode has resulted in 50% higher fusion power
output and a factor 2 higher fusion gain Q than in conventional sawtoothing
steady-state ELMy H-mode plasmas. Steady-state conditions in temperature and
density profiles have been approached in Double Barrier discharges in
deuterium. The Double Barrier mode has been routinely established in the new
Gas Box divertor configuration on JET. Off-axis LHCD has been used for
current profile control during the high performance phase.
In preparation of a new
DTE2 campaign on JET the potential of the Double Barrier mode for sustained
high fusion performance has been explored in modelling studies. Steady-state
operation on ITER has been studied in transport code modelling for
Advanced Tokamak scenarios in the Double Barrier mode.
IAEA 1999