Advanced Scenarios and Control TSG

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Advanced Scenarios and Control TSG

Meeting files

Leader	Devon Battaglia
Deputy	Stefan Gerhardt
Theory / Modelling	Francesca Poli
University Representative	Egemen Kolemen
Email	Email TSG Leaders

Overall TSG objective: Develop the basis for integrated, steady-state operation and axisymmetric control for next-step STs, while helping resolve key scenario and control issues for ITER

Thrust 1 - Scenario Physics

• Development of 100% non-inductive operation

• Extend the high-current, partial-inductive scenarios to long-pulse

Thrust 2 - Axisymmetric Control Development

• Develop methods to control the heat flux for high-power scenarios

• Develop rotation and current profile control

Thrust 3 - Disruption Avoidance By Controlled Discharge Shutdown

• Develop detection of impending disruptions

• Develop techniques for the automated termination of discharges

Thrust 4 - Scenario Physics for Next Step Devices

• Determine the optimal, simultaneous q- and rotation profiles

• Study the conditions for classical beam current drive

• Explore & validate integrated models for projections to FNSF

Primary Related Programmatic Milestones:

JRT-2015: FES 3 Facility Joint Research Target / Milestone: Conduct experiments and analysis to quantify the impact of broadened current and pressure profiles on tokamak plasma confinement and stability

JRT-2016: FES 3 Facility Joint Research Target / Milestone: Conduct research to detect and minimize the consequences of disruptions in present and future tokamaks, including ITER.

R(16-3): Develop the physics and operational tools for obtaining high-performance discharges in NSTX-U

ITPA Participation:

• IOS-1.1 ITER baseline, at q95=3, bN=1.8, ne=0.85nGW (D, H, He)

• IOS-1.2 Divertor heat flux reduction in ITER baseline scenario

• IOS-2.1 Compare helium H-modes in different devices

• IOS-3.2 Define access conditions to get to SS scenario

• IOS-3.3 Core confinement for q(0)=2

• IOS-5.2 Maintaining ICRH coupling in expected ITER Regime