Run-planning and the Ideas Forum

Transcription

1 Run-planning and the Ideas Forum presentation to the Program Advisory Committee February 6-7, 2002 by Jim Terry Terry - PAC 2/02 (1)

2 Run Planning Time-line CY 01 CY 02 OCT NOV DEC JAN FEB MAR Formulate task-force "thrusts" and taskforce topical areas "Ideas" Forum Solicit participation in "ideas" Forum via announcements at APS and ings taskforces prioritze ideas and proposals finalize taskforce run-time allocations write and review miniproposals reflecting prioritizations pumpdown Terry - PAC 2/02 (2)

3 The C-Mod "Ideas" Forum "Thrusts": Advanced Tokamak Issues Burning Plasma Support Issues Topical Areas: Transport Edge/Divertor RF MHD 70 ideas from 9 different institutions were presented: PSFC*, General Atomics*, FRC/Univ. of Texas*, PPPL*, UCSD*, LLNL*, Univ. of Toronto*, Univ. of Md., Colo. Sch. of Mines *had ideas accepted for scheduling, mini-proposals are now being solicited First forum for which all presentations were electronic, with full PictureTalk, audio, and video feeds, accommodating remote presentations from GA, PPPL, and U of Texas. Terry - PAC 2/02 (3)

4 Observations about Forum/Planning - More participation from community results in a larger number of good ideas. - It is important that community participation be reinforced by continued involvement if the "idea" is followed-up. - There are far more good ideas than run-time to do them. There are experiments needing over 120 run-days in the queue. Only 29 run-days are allocated for The 21 week campaign in 2003 should relieve most of the backlog. Terry - PAC 2/02 (4)

5 2002 Run Campaign Scheduling CY 02 APR MAY JUN JUL start-up & conditioning ~14 run days physics runs ~ 32 run days RF change-over RF change-over Terry - PAC 2/02 (5)

6 2002 Run-Day Allocation based on: Program goals 2001 PAC recommendations Timeliness (e.g. Snowmass) 6 run-days AT Issues BP Support RF Transport Edge/Div. MHD Contingency Task-force area

7 2002 Task-force Prioritizations 9 100% Bootstrap 8 7 Density control/fueling run-days ITBs IGNITOR support FIRE support (DN) Heating Opt. Flow Drive (MCIBW) Ped. Structure Dep. Div. Plasma/ neutrals Hi-Performance Ant. Eval. Ped. Width Determinants Edge Turbulence Core MHD Ped. MHD Contingency AT Issues BP Support RF Transport Edge/Div. MHD Contingency Task-force area

8 run AT Support run Burning Plasma run RF run Transport run Edge/Divertor run MHD days days Support days days days days 1 H-mode 2 Hi performance 2 Antenna Evaulation 2 Neutral/Plasma effects 1 Turbulence Imaging fueling/pumping at 5.4 T/1.5 MA D(H) at 70 and 78 MHz on pedestal widths near density limit 1 Core MHD - Distinction unbalanced DN comp. to 8T/2MA D(He3) with heating phasing (Moss., et al.) Experiment/Theory between TMs and NTMs (Labombard/Whyte) (Marmar, Granetz) Comp. (Zweben) (In/La Haye) 2 MCIBW Flow Drive 2 Phase space for 1 ITB Barrier 1.5 Fire relevant: ELMy/EDA regimes 1 Edge Turbulence 1 Pedestal MHD stability Location-Ip scan DN Assessment 2 Antenna Evaulation (Greenwald, et al.) Statisitics (Carreras, δ scans etc. (Rice, et al.) (Meade) at 78 MHz allocation=4 days et al.) (Moss.-Hughes comb) with CD phasing piggy back - allocation=2 days 1 ITB Barrier 1.5 Ignitor-relevant: allocation=6 days 1 Trans.Transport Exps. Inner/Outer SOL Comp Location-RF into Optimization by (Rowan, et al.) Effect of Inner Div Mod 1 Pedestal MHD stability Ohmic ITB (Fiore) varying Ip-rise scenario 2 Effect of Hi-power Pol. Flows in SOL δ scans etc. (Snipes) combined with on J-port 1 L/H Thresholds (Moss.-Hughes comb) 1 ITB Threshold/ Hi-performance Ohmic D(H) and D(He3) (Hubbard, et al.) 0.5 Simple-as- Trigger via vary R/L T 8T plasmas (Sugiyama) possible Diverted strong rec. for 100% (Greenwald) allocation=5 days 2 MCCD at 78 MHz more run days desired Discharges (Lisgo) bootstrap (Perkins) for 1st two areas 1 ITB Threshold/ 0.5 H-mode threshold 0.5 Edge turbulence strong rec for j(r) Trigger via B T ramps for innerwall-limited in EDA/RF power scan from pellet (Marmar) (Rice, Lee) discharges (Pitcher) Experiment/Theory Comp. (Zweben) strong rec. that QC mode 0.5 High power 0.5 density limits in allocation=3 days investigation (Nevins) Off-axis ITB (Rice) Ohmic limited find EDA plasmas plasmas 0.7 Fiducials to for piggyback % bootstrap (Greenwald) distrib- Characterize fraction - scoping ted Boronization (Perkins) (Lipschultz) 1 Density control via low Ip EDA (Hubbard) 0.5 Density control via Hi-power L-mode (Hubbard) in red - 80 Mhz RF in green - 70 and 78 Mhz RF 1.5 j-profile mod. in blue - Ohmic using Ip startup (Porkolab) & horizontal line shows NOTE: this will be included in the handout, but not shown. via Ip ramp after ITB formation (Rice) allocation=9 days % bootstrap fraction - followup (Perkins) allocation proposed RF-use timeline: 0.5 j-prof. mod.-off axis Start at 70 and 80 MHz, all conditioning to be done at 2 frequencies; heating of PEP 1st two weeks of "physics" runs done with two frequencies (heating phasing) (green experiments); mode (Marmar) the final part of the run campaign done at single frequency (80 MHz), with the last runs done with CD phasing. 0.5 j-profile mod. (Porkolab, Rice) followup Long pulse with 1 hi-power RF (Wolfe)

9 RF Hardware Scheduling CY 02 APR MAY JUN JUL 70 & 80 MHz - for ITB & RF expts (J with heating phasing) 80 MHz - (J with heating phasing) 80 MHz - (J with CD phasing) Terry - PAC 2/02 (9)

10 Desired Experiments for Extended (21 week) 2003 Campaign - Phase I AT -Long pulse demonstrations at higher power, density -Other proposed ITB physics expts. -Further iteration on LH target development -Thorough exploration of high T e startup scenarios BP -Demo. (ρ* scaling) expts, match β, ν* of FIRE, ITER-FEAT, and Ignitor -Further DN exploration -Initial W brush tile expt. RF -D(He 3 ) heating & -MCIBW pol. flow drive TRANS. -H-mode studies Exploitation of DN Neutrals & ped. width Dim. sim. w/ DIII-D & AUG Edge relaxation mech. -Transient transport expts. -Momentum transport EDGE -Edge turb. n e, T e -Edge turb. statistics -Inner wall fueling/ transport -Div. leakage expts -Co-dep. & wall pumping -Understanding Boronization MHD -NTM studies with DIII-D -Active MHD Spect. of Alfven modes -Pedestal stability Terry - PAC 2/02 (10)

11 Experiments for 2003 Campaign Phase II (post-lh Launcher) AT -LH power-density limit study -LH Coupling vs. density, N II -LH heating and CD studies at low density -j(r) measurements -Study effect of LHCD, j(r) change on ITBs BP -LH coupling and CD efficiency at mod. & high densities -Sawtooth control expts. -High Perf. L-mode plasmas RF -LH startup -Ant. operation with CD phasing -MCCD expts. TRANS. -Er via RFdriven local particle loss -L/H Thresh. expts. -Edge flow profile meas. -EDA Impurity transport EDGE -Div. characterization in LH scenario -Dissipative div. in LH scenario -Edge turb. in LH scenario MHD -Active MHD with 2nd ant. (allows variation of n-spectrum) Terry - PAC 2/02 (11)

12 Summary - Experiments planned for 2002 campaign come from developed Forum "Ideas" and proposals already approved run-days are available for physics experiments in Most of the desired expts. and "ideas" will be done in the 21 week campaign of Run-time allocation divided among 2 "thrusts" - AT Issues, Burning Plasma Support - and 4 topical areas - RF, Transport, Edge/Div., MHD - Run-time allocation based on program goals, PAC recommendations, program timing allocation: AT (31%), BP (17%), RF (21%), Transport (14%), Edge/Div (10%), MHD (7%) Terry - PAC 2/02 (12)