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NSTX Next 5 Year Kick-Off Meeting 10:00 - Comments by the Director's office (Rob and Rich) 10:10 - Introductory comments (Masa) 10:30 - Presentations by.

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Presentation on theme: "NSTX Next 5 Year Kick-Off Meeting 10:00 - Comments by the Director's office (Rob and Rich) 10:10 - Introductory comments (Masa) 10:30 - Presentations by."— Presentation transcript:

1 NSTX Next 5 Year Kick-Off Meeting 10:00 - Comments by the Director's office (Rob and Rich) 10:10 - Introductory comments (Masa) 10:30 - Presentations by Chapter Leaders 10 minutes each (MHD, T&T, Waves-Particles, Boundary, ISD, ST Development Path, Facility/Diagnostics) 11:30 - Ideas presentations and discussions (1 or 2 VUs each) Brent, Chas, Vlad, Chuck.. 11:50 - February meeting discussions 12:00 - Adjourn

2 Dec. 22, 2006Initial brainstorming "kick-off" meeting on key research opportunities for the next 5 years Jan. 15, 2007Input from theory community for theory/modeling support Feb. 2007The "Leads" to organize mini-meetings to identify key research opportunities March 2007Develop preliminary upgrade cost estimates (manager’s estimates) April 2007Develop draft plan for key approaches in support of opportunities April 2007Develop and review outline for the draft plan April 2007Team meeting to review approaches and opportunities July 2007Initial draft plan ready August 2007Team discussion of the initial draft plan Mid-Sept, 2007Tokamak Planning Workshop at MIT Jan. 2008NSTX PAC reviews the draft plan Feb. 2008Final draft plan ready for review by the team April 1, 2008Final plan (document) ready 1 wk before reviewFinal presentation material ready ~ May 2008 (TBD)New 5 Year Plan Review meeting Starting Preparation for the Next NSTX 5 Year Plan

3 5 Year Plan Write-Up Responsibilities LeadInputs Chapter 1Overview/Introducti on M. OnoM. Peng, S. Kaye, M. Bell Chapter 2MHDS. SabbaghJ. Menard, D. Gates, J. Manickam Chapter 3T&TS. KayeM. Bell, K. Tritz, T.S. Hahm Chapter 4Waves & ParticlesG. TaylorJ. Hose, C.K. Phillips, P. Ryan, N. Gorelenkov, E. Fredrickson Chapter 5BoundaryR. MaingiH. Kugel, V. Soukhanovskii, R. Majeski, R. Kaita, C. Skinner, D. Stotler Chapter 6IntegrationJ. MenardC. Kessel, S. Kaye, D. Gates, R. Raman Chapter 7ST Development Path-CTF M. PengC. Neumeyer, J. Menard, S. Kaye Chapter 8Facility/Diagnostics/ Control M. BellM. Ono, R. Kaita, C. Neumeyer, B. Stratton, D. Gates AppendixNSTX Collaboration Plan M. PengCollaboration Leaders Overall coordination: M. Ono

4 I P =1-1.2MA ITER Demo CTF ST-Reactor 8-12MA Nuclear Component Testing NSTX NHTX 3-4MA CTF/DEMO-like Divertor Heat Flux 30 - 35MA "NSTX" Fusion Development Path Tokamaks

5 Possible NSTX Strategy for the Next Five Years Establish physics basis for design and construction of National High- power advanced Torus eXperiment (NHTX) Explore physics of Spherical Torus / Spherical Tokamak to provide basis for attractive U.S. Component Test Facility (CTF) and Demo. Support preparation and resolution of the issue cards for burning plasma research in ITER using physics breadth provided by ST; support and benefit from "ITPA Specific" activities. Complement and extend tokamak physics experiments, maximizing synergy in investigating key scientific issues of toroidal fusion plasmas NSTX to Address Scientific Issues Important for NHTX, ST-CTF, ITER, and Toroidal Fusion Plasmas

6 Parameter comparison of present NSTX high-f NI, fully non-inductive NSTX target, and NHTX design NSTX NHTX 65% NI experimentfull NI target TRANSP BS, NBI 0D scaling analysis A 1.551.651.8 IP (MA) 0.750.73.4 BT0 (T) 0.450.522.1 beta-N 5.66.74.3 beta-P 1.52.71.1 beta-T (%) 1715 li 0.60.5 kappa 2.32.62.7 delta-X lower 0.750.850.6 qmin 1.32.4 qstar 3.95.63.4 f-BS 0.550.850.6 f-NBICD 0.10.150.4 f-NI 0.6511 HH98 11.3 Need to benchmark NHTX 0D analysis of BS and NBICD with TRANSP

7 IPIP time HHFW+NBI CHI+EC/EBW Or PF-only? HHFW+NBI+Bootstrap What plasma parameters should we aim to establish physics basis for NHTX design? ~ 100% non-inductive operations Ip ~ 700 kA (Jon's scenario)? 1 MA? What solenoid-free start-up Ip to aim? Can we achieve 500 kA? Advanced control including RWM. j(r) control? NTM contorl? ELMs - mitigation or small ELMs likely crucial Advanced divertor - liquid lithium divertor target, cryo..? How long? ~ 3 - 5 sec (at moment ~ 1 sec at 5 kG)

8 Next 5 Year Plan Time Table 12 17 24 NSTX Run Weeks Present 5 Year Plan Next 5 Year Plan Proposal Prep Kick-off meeting Tokamak Workshop DOE Reviw Opportunities for Major Upgrades Major Outage I Major Outage II Optimized TF/OH for longer pulse 3-5 sec and higher B T up to 8 kG? (C. Neumeyer) How much EBW power? 1 MW by 2010? HHFW improvement? Advanced divertor? Liquid lithium divertor target. Cryo-pump? Advanced core fueling? Pellet /CT? Advanced control? Advanced diagnostics?

9 Transport and Turbulence Five-Year Plan (as of 2003) Transport physics Momentum & power balance, strong electron & ion heating, low and high beta Core local transport, turbulence & flows Low/high k spectra theory/experiment, lo/high beta Boundary transport & turbulence Feedback with heating, CD, V , fueling  & pellets Understanding P(r),J BS optimize Pedestal characterize IPPA: 5 year IPPA: 10 yr V  shear & w/error field 030405060708FY02 09 Major accomplishments Key confinement and transport dependences established (B T, I p, , ,…) - Data contributed to ITPA database to address high priority ITPA tasks Role of E r and magnetic shear on transport identified Localized turbulence characteristics being assessed across wide range of k (ITG/TEM to ETG) Theory/simulations have indicated potential importance of ETG in controlling electron transport To be discussed in Boundary

10 Characterize NTM, island widths Include v  in reconstruction Stablility vs. J(r), P(r), shape ELM type vs. shape, regime TAE & CAE similarity expts. Assess CD required - NTM stabilization Measure ELM structureCompare ELM data to theory FY0203040506070809 21 weeks/year Optimize passive stability Optimize stability with active tools Effects of v  shear on  limits RWM/wall interaction Stablility vs. shape, P(r), l i NTM suppression Comparison to theory RWM & EF active control, rotation control Error fields, rotation damping physics Gap structure vs. A, q profile IPPA: 5 yearIPPA: 10 yr MHD Research Ahead of Schedule, now Addressing Advanced Goals (Timeline from 5 Yr Plan) Moved to Wave-Particle Moved to Boundary Major Accomplishments –RWM active stabilization at low rotation (ITER-relevant) (Sabbagh, PRL 97 (2006) 045004) –Observed plasma rotation damping by NTV physics (Zhu, PRL 96 (2006) 225002) –Unstable n = 1 – 3 RWM observed (Sabbagh, NF 46 (2006) 635) –RWM critical rotation speed depends on V  profile, q; A (Sontag, PoP 12 (2005) 056112) (Reimerdes, PoP 13 (2006) 056107) –Rotation +  * effects may provide 1/1 mode saturation (Menard, NF 45 (2005) 539) –Stability vs. shape, P(r), l i studied (Gates, PoP 13 (2006) 056122) (Sabbagh, NF 44 (2004) 560; Menard, PoP 11 (2004) 639) –V , flux-isotherm, MSE in equilibrium reconstructions (Sabbagh, NF 46 (2006) 635)

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