NSTX-U Program Impact and Future Research Focus | PAC Meeting Highlights
Delve into the presentations and discussions held during the PAC Meeting on Jan 9-10, 2018, focusing on the mission, impact, and future prospects of the NSTX-U program in the realm of fusion science. Explore key research contributions, insights since 2009, envisioned advancements up to 2030, and strategies for maintaining world-leading status post 2020 resumption. The proposed presentations cover a range of topics such as science results, device diagnostics, theoretical contributions, and future experimental capabilities.
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Presentation Transcript
PAC PREPARATION PAC Meeting: Jan. 9-10, 2018
PAC presentations will focus on mission and impact of NSTX-U program, taking into account world ST program. Each presentation should be structured to address: How will STs and NSTX-U address critical fusion science issues? Identify 1 to 2 most impactful contributions in your research area New science and understanding since original design of NSTX- U (2009) and/or start of last Five Year Plan (2014) Impact of this on near/medium term research (2020 2025) Impact on long term research (2025 2030) (Assume similar visions to Five Year Plans, but are there any changes that this new understanding point to?) How will NSTX-U be world-leading in your research area when we resume ops in 2020? With respect to present, proposed and expected capabilities of STs world-wide (MAST-U, QUEST, Pegasus, etc.)
Proposed Presentations ~6 hours; + Activities since last PAC (1/17) Recovery (Gerhardt) 15+15 min Science results, including collaborations (Kaye) 15+15 min How STs/NSTX-U contributes to FES mission goals (Menard) 20+20 min Transport (Guttenfelder) 20+20 min Unique physics regime and diagnostic capabilities - electron transport at high beta, low nu*, access high Te regimes with central HHFW e-heating (point back to work on ETG, high-k scattering, RS regimes, future: new high-k and turbulence diagnostic capabilities); theory contributions Energetic Particles (Podesta) 20+20 min Unique, flexible well-diagnosed device to develop predictive capability for AE instabilities and EP transport for burning plasmas point to new GAE and TAE results from NSTX-U, theory/modeling, predictions MHD (Sabbagh) 20+20 min Unique access to RWM passive stabilization at low-A, low collisionality complements DIII-D, goes beyond MAST-U capabilities. Broaden to NTV/3D, disruption forecasting, mitigation
Proposed Presentations (contd) Boundary TBD (40+40) Pedestal - high(er) pedestals break off KBM branch / wider-higher pedestals (QH, some instability) PFC - Challenging PFCs at full current and power, test SOL width scaling (XGC results) and implications for ITER Liquid Metals - Near-term test Li-wall pumping for low-recycling regimes, Uliter, transition to high-Z tiles and Li coatings, then flowing LM. HHFW for high-Z impurity expulsion Non-inductive sustainment Control, scenarios (Battaglia) 15+15 min Non-inductive start-up and ramp-up (Raman?) 15+15 min Only ~2 3 working weeks before PAC Meeting Dry runs (plan for 2 each) Week of 12/18 Week of 1/2
