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Advanced Control Strategies for Macroscopic Stability in Fusion Devices (2008-2013)

This research report outlines advanced control strategies for managing macroscopic stability in fusion devices over a timeline from 2008 to 2013. It highlights the development of models addressing resistive wall modes (RWM), including diagnostics, optimal control methods, and the integration of real-time feedback systems. Key focuses include disruption prediction and mitigation, the stabilization of RWM through non-circular coils (NCC), and advanced tools for simulation and analysis. The study discusses the impact of various parameters on stability, demonstrating the evolution of control algorithms and their contribution to improved performance.

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Advanced Control Strategies for Macroscopic Stability in Fusion Devices (2008-2013)

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  1. 14 FY07 08 09 10 11 12 13 V1.1 bN control w/stability models shaping Run bN > 6 w/high S; bN control w/diag loop ctrl bN, SP control w/ rtEFIT Opt. active RWM control, Vf ; mode deform. Role of n > 1, stabilize RWM w/NCC RWM Adv. RWM control design, NCC dsgn non-mag. RWM detect. non-mag. RWM control Adv. RWM control with Vf, q profile control RWM stab. physics (ni,Vf,wA, multi-modes) Physics DEFC Advanced dB correction w/ NCC DEFC physics model at high b; optimize DEFC NTM Test models low A; mode avoidance min. impact low A studies (Wmarg, Vf , r*,n*); seeding physics Vf physics NTV, INTV w/ real-time Vf control; with NCC NTV physics, ni, n=2-6, INTV, NCC design Disruptions Disruption prediction, detection, avoidance Characterize disruption/modes; low A sims. Adv. RWM, DEFC, Vf ctrl w/ NCC two toroidal SXR arrays NCC install CS upgrade non-mag. RWM detection pCHERS, FIDA, high-resolution edge SXR, internal dB with MSE real-time MSE 2nd NBI Tools advanced rt-Vf control MSE-LIF, LLD real-time Vf control Advanced RWM control algorithms Integrated code devel/appl: mmVALEN,Hu-Betti dW, MARS-F, GTC-Neo NTV, NIMROD, M3D, PEST3, rDCON div. halo current b control; fast IR - PFC disrupt. loads; disruption prediction/detection Macroscopic Stability Research Timeline (2008-2013)

  2. 14 FY07 08 09 10 11 12 13 Macroscopic Stability Research Timeline (2008-2010) V1.0 shaping Run bN > 6 w/high S; bN control w/diag loop ctrl Opt. active RWM control, Vf ; mode deform. RWM Adv. RWM control design non-mag. detect. RWM stab. physics (ni,Vf,wA, multi-modes) Physics DEFC DEFC physics model at high b; optimize DEFC NTM low A studies (Wmarg, Vf , r*,n*); seeding physics Vf physics NTV physics, ni, n=2-6, INTV Disruptions Characterize disruption/modes; low A sims. two toroidal SXR arrays non-mag. RWM det. pCHERS, FIDA, high-resolution edge SXR, internal dB with MSE rt- MSE Tools rt-Vf MSE-LIF, LLD Adv. RWM cntl. alg. Code devel/appl: mmVALEN,,Hu-Betti dW, MARS-F, GTC-Neo NTV, NIMROD, M3D, etc. Base Plan +10% incr. div. halo current b control; fast IR, PFC loads

  3. 14 FY07 08 09 10 11 12 13 Macroscopic Stability Research Timeline (2008-2013) V1.0 bN control w/stability models shaping Run bN > 6 w/high S; bN control w/diag loop ctrl bN, SP control w/ rtEFIT Opt. active RWM control, Vf ; mode deform. Role of n > 1, stabilize RWM w/NCC RWM Adv. RWM control design, NCC dsgn non-mag. RWM detect. non-mag. RWM control Adv. RWM control with Vf, q profile control RWM stab. physics (ni,Vf,wA, multi-modes) Physics *10% incr. puts 2nd NBI earlier, NCC later DEFC Advanced dB correction w/ NCC DEFC physics model at high b; optimize DEFC NTM Test models low A; mode avoidance min. impact low A studies (Wmarg, Vf , r*,n*); seeding physics Vf physics NTV, INTV w/ real-time Vf control; with NCC NTV physics, ni, n=2-6, INTV, NCC design Disruptions Disruption prediction, detection, avoidance Characterize disruption/modes; low A sims. Adv. RWM, DEFC, Vf ctrl w/ NCC two toroidal SXR arrays NCC install non-mag. RWM detect. neut. collim. non-mag. RWM control pCHERS, FIDA, high-resolution edge SXR, internal dB with MSE real-time MSE q control 2nd NBI Tools advanced rt-Vf control MSE-LIF, LLD real-time Vf control Advanced RWM control algorithms Integrated code devel/appl: mmVALEN,Hu-Betti dW, MARS-F, GTC-Neo NTV, NIMROD, M3D, PEST3, rDCON Base Plan +10% incr.* div. halo current b control; fast IR - PFC disrupt. loads; disruption prediction/detection

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