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CORSICA modelling of ITER hybrid operation scenarios
- Source :
- Nuclear Fusion. 56:126002
- Publication Year :
- 2016
- Publisher :
- IOP Publishing, 2016.
-
Abstract
- The hybrid operating mode observed in several tokamaks is characterized by further enhancement over the high plasma confinement (H-mode) associated with reduced magneto-hydro-dynamic (MHD) instabilities linked to a stationary flat safety factor () profile in the core region. The proposed ITER hybrid operation is currently aiming at operating for a long burn duration (>1000 s) with a moderate fusion power multiplication factor, , of at least 5. This paper presents candidate ITER hybrid operation scenarios developed using a free-boundary transport modelling code, CORSICA, taking all relevant physics and engineering constraints into account. The ITER hybrid operation scenarios have been developed by tailoring the 15 MA baseline ITER inductive H-mode scenario. Accessible operation conditions for ITER hybrid operation and achievable range of plasma parameters have been investigated considering uncertainties on the plasma confinement and transport. ITER operation capability for avoiding the poloidal field coil current, field and force limits has been examined by applying different current ramp rates, flat-top plasma currents and densities, and pre-magnetization of the poloidal field coils. Various combinations of heating and current drive (H&CD) schemes have been applied to study several physics issues, such as the plasma current density profile tailoring, enhancement of the plasma energy confinement and fusion power generation. A parameterized edge pedestal model based on EPED1 added to the CORSICA code has been applied to hybrid operation scenarios. Finally, fully self-consistent free-boundary transport simulations have been performed to provide information on the poloidal field coil voltage demands and to study the controllability with the ITER controllers.
- Subjects :
- Physics
Nuclear and High Energy Physics
Tokamak
Safety factor
Plasma parameters
Nuclear engineering
Plasma
Fusion power
Condensed Matter Physics
01 natural sciences
010305 fluids & plasmas
law.invention
Physics::Plasma Physics
law
Electromagnetic coil
0103 physical sciences
Magnetohydrodynamics
010306 general physics
Voltage
Subjects
Details
- ISSN :
- 17414326 and 00295515
- Volume :
- 56
- Database :
- OpenAIRE
- Journal :
- Nuclear Fusion
- Accession number :
- edsair.doi...........dd5228ef58a24728defb6c9761671971