Development of fault response strategies and other control tools for the ITER first plasma and pre-fusion-power scenarios
2024 Research Campaign, Plasma Control
Purpose of Experiment
This experiment aims to provide D3D control with the ability to emulation ITER magnetic control characteristics and exceptions. Further, ITER exception handling strategies will be tested. The success of this experiment will allow further ITER experiments to be conducted on D3D, which will in turns support the successful plasma start up of ITER.
Experimental Approach
The experiment will be roughly divided into 2 parts. The first part will focus on the magnetic control emulation testing and demonstration, and the second part will focus on exception handling. The ITER magnetic control emulation will test several emulation strategies. The experiment will be aimed at finding the ‘best’ emulation strategy, and refining shape control that is able to be achieved with it. The 3 methods to be tested are A) an flux priority method, emphasizing the E-coil initialization and transition, B) an B field focused strategy and uses F coil only, and C) and time response only emulation strategy. The error handling portion will test the handling of several ITER relevant exceptions. Faults will be simulated where an ITER F-coil would no longer be responding to commands, either (a) not changing, (b) the PS voltage vanishing, (c) a change in resistivity causes the coil to quickly decay (as in shorting to copper). If time allows, comprehensive VDE prevention will also be tested.
See more details, including project leads, at U.S. Department of Energy, Office of Scientific and Technical Information (OSTI).