2021 IAEA-PPPL Workshop: Theory and Simulation of Disruptions
All Times EDT
JULY 19
8:30-9:00 Welcome and Logistics: A. Bhattacharjee (PPPL)
Session I: ITER, Other Experiments and Fusion Reactors, Chair: A. Bhattacharjee (PPPL)
09:00-09:40 The ITER Disruption Mitigation System—Design Progress and Design Validation: M. Lehnen (ITER) (Video)
09:40-10:20 Runaway Electron Beam Suppression Using Impurity Flushing and Large Magnetohydrodynamic Instabilities: C. Reux (CEA/JET) (Video)
10:20-10:50 Measurements and Modeling of Pre-Thermal Quench Non-Thermal Electron Formation During Pellet Injection Shutdowns in DIII-D: E. Hollmann (UCSD) (Video)
10:50-11:10 Break
11:10-11:50 Complete Prevention of Runaway Electron Beam Formation with a Passive 3D Coil in SPARC: R. Tinguely (MIT) (Video)
11:50-12:30 Prospects for Disruption Handling in a Commercial Tokamak Fusion Reactor: N. Eidietis (GA) (Video)
12:30-01:30 Discussion on Session I
JULY 20
Session II: Simulation and Modeling Capabilities, Chair: M. Lehnen (ITER)
08:30-09:10 Complete 3D MHD Simulations of ITER Post-Thermal Quench Plasms with Realistic Lundquist Numbers: F. J. Artola (MPI, Garching) (Video)
09:10-09:40 MHD Modeling of SPI Injection in JET: J. McClenaghan (GA) (Video)
09:40-10:10 Dispersive Shell Pellet Modeling and Comparison with Experimental Trends: V. Izzo (Fiat Lux) (Video)
10:10-10:50 Simulations of Disruption Mitigation in ITER with Staggered Shattered Pellet Injection: O. Vallhagen (Chalmers University of Technology) (Video)
10:50-11:10 Break
11:10-11:40 Simulation Study of Pellets and SPI Fragments Ablated by Thermal and Runaway Electrons: R. Samulyak (Stony Brook University) (Video)
11:40-12:10 Non-Equilibrium Impurity Treatment for JOREK Disruption Mitigation Simulations: D. Hu (Beihang University) (Video)
12:10-12:40 Findings from a Benchmark Study of 3D Vertical Displacement with JOREK, M3D-C1 and NIMROD: C. Sovinec (University of Wisconsin-Madison) (Video)
12:40-01:40 Discussion on Session II
JULY 21
Session III: Runaway Electron Mitigation, Chair: G. Pautasso (MPI, Garching)
08:30-09:10 Access and Extrapolation of Runaway Electron Mitigation via D2 injection and Large MHD: C. Paz-Soldan (Columbia University) (Video)
09:10-09:40 Overview of Latest Runaway Electron Experiments and Analysis at COMPASS: O. Ficker (IPP, CAS) (Video)
09:40-10:20 The Role of Impurity Transport and Temperature in MGI Induced Runaway Dynamics: O. Linder (MPI, Garching) (Video)
10:20-10:40 Break
10:40-11:10 Results on Last FTU Campaign on Runaway Electron Mitigation: D. Carnevale (Universita da Roma) (Video)
11:10-11:40 Experimental Measurements of Shattered Pellet Injection Fragment Plume Parameters: T. Gebhart (ORNL) (Video)
11:40-12:40 Poster Session
12:40-01:40 Discussion on Session III
JULY 22
Session IV: Disruption Physics, Chair: N. Ferraro (PPPL)
08:30-09:10 Difficulty of Plasma Steering and Constraints from the Greenwald Limit: A. Boozer (Columbia University) (Video)
09:10-09:40 Thermal Quench in ITER Locked Mode Disruptions: H. Strauss (HRS Fusion) (Video)
09:40-10:20 New Observations of Magnetic Island Flux Tunneling, Heteroclinic Bifurcation and Seeding by Nonlinear Three-Wave Coupling: L. Bardoczi (GA) (Video)
10:20-10:50 Optimum RF Stabilization of NTMs in Large Tokamaks: R. Nies (PPPL) (Video)
10:50-11:10 Break
11:10-11:50 Fast Wave Excited by Runaway Electrons in Disruptive Plasma: C. Liu (PPPL) (Video)
11:50-12:20 Alpha Particle Driven Alfvenic Instabilities in ITER Post-Disruption Plasmas: A. Lier (MPI, Garching) (Video)
12:20-12:50 Simulation of Plateau Formation During Current Quench and MHD Instabilities with Runaway Electrons: C. Zhao (PPPL) (Video)
12:50-01:50 Discussion on Session IV
JULY 23
Session V: Disruption Avoidance, Chair: N. Eidietis (GA)
08:30-09:10 Disruption Prevention Via Interpretable Data-Driven Algorithms on DIII-D and EAST: C. Rea (MIT) (Video)
09:10-09:50 Advances in Deep-learning-based Prediction and Control of Plasma Instabilities and Disruptions in Tokamaks: G. Dong (Princeton University) (Video)
09:50-10:20 Tokamak Disruption Event Characterization and Forecasting Research and Progress on Expansion to Real-Time Application: S. Sabbagh (Columbia University) (Video)
10:20-10:40 Break
10:40-11:10 Simulations of Neoclassical Tearing Modes Seeded via Transient-Induced-Multimode Interaction: E. Howell (Tech-X) (Video)
11:10-11:40 How will ITER deal with large magnetic islands?: A. Reiman (PPPL) (Video)
11:40-12:10 Generation and Mitigation of Runaway Electrons: Spatio-Temporal Effects in Dynamic Scenarios: D. Del-Castillo-Negrete (ORNL) (Video)
12:10-12:40 Energy Balance During Pellet Assimilation: P. Aleynikov (MPI, Greifswald) (Video)
12:40-1:40 Discussion of Session V
01:40-01:50 Adjournment: A. Bhattacharjee (PPPL)
Posters
Radiofrequency emission by runaway electrons in FTU: P. Buratti (ENEA)
Edge-Localized Mode Detection and Correlation with Rotating MHD Modes for Disruption Event Characterization and Forecasting: J. Butt (Columbia University)
Benchmarking Nonlinear, Extended-Magnetohydrodynamic Modeling of Disruption Mitigation: B. Lyons (GA)
Early Internal Detection of MHD by Faraday-Effect Polarimetry in High-qmin DIII-D Plasmas and Correlation with Ideal-Wall Beta Limit: M. D. Pandya (University of Wisconsin-Madison)
On Disruption Prediction and the Relative Cost of Disruptions: M. Parsons (The Pennsylvania State University)
Resistive Wall Mode Stability Forecasting in NSTX through Balanced Random Forests and Counterfactual Explanations: A. Piccione (University College London)
Offline Torque Balance Analysis of Rotating MHD for Real-Time Application: J. Riquezes (Columbia University)
Collisionless Plasma Transport Mechanisms in Open Stochastic Magnetic Field Lines Associated with Thermal Quench: M.-G. Yoo (PPPL)
Scenario Adaptive Disruption Prediction Study for Next Generation Burning Plasma Tokamaks: J. Zhu (MIT)