This title appears in the Scientific Report :
2021
DEMO control challenges
DEMO control challenges
The first European DEMOnstrationfusion power plant (EU-DEMO) is designed to deliver 500 MW of electric power to the grid. This means it has to achieve 2 GW of internal fusion power. Contrary to present devices, EU-DEMO will not be an experimental device and hence it will operate within a single scen...
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Personal Name(s): | Janky, F. |
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Ambrosino, R. / Ariola, M. / Biel, W. (Corresponding author) / Fable, E. / Kudlacek, O. / Mattei, M. / Pironti, A. / Schramm, R. / Siccinio, M. / Treutterer, W. / Zohm, H. | |
Contributing Institute: |
Plasmaphysik; IEK-4 |
Imprint: |
2020
|
Conference: | 31st Symposium on Fusion Technology (SOFT 2020), virtuell (virtuell), 2020-09-20 - 2020-09-25 |
Document Type: |
Abstract |
Research Program: |
Plasma-Wall-Interaction |
Publikationsportal JuSER |
The first European DEMOnstrationfusion power plant (EU-DEMO) is designed to deliver 500 MW of electric power to the grid. This means it has to achieve 2 GW of internal fusion power. Contrary to present devices, EU-DEMO will not be an experimental device and hence it will operate within a single scenario.Here, we present studies on the control of such a plasma scenario. Quantities that need to be controlled are: the plasma current, position and shape (magnetic control), total fusion power, power crossing the plasma boundary, edge electron density and temperature at the divertor plates(kinetic control). Each controlled quantity poses a challenge and drives stringent requirements on the diagnostic precision and reliability of the actuators.The control quantities are non-linearly coupled which makes control more complicated. Therefore, robust control schemes are essential to ensure stable and safe operation conditions and protect against disruptions and excessive heat load on in-vessel components.This article reportsonsimulations of the equilibrium control with two differentcontrolstrategies using either the in or out vessel coils, quantifying demands on the energy storage and the maximal controllable displacement. For the kinetics, several control options are discussed. In our time dependent simulations, we model a realistic behaviour of the actuators and noise on the diagnostics, allowing to quantify the technical requirements on these subsystems. |