ICRF Induced Argon Pumpout in H-D Plasmas at Alcator C-Mod

Size: px
Start display at page:

Download "ICRF Induced Argon Pumpout in H-D Plasmas at Alcator C-Mod"

Transcription

1 0 ICRF Induced Argon Pumpout in H-D Plasmas at Alcator C-Mod C Gao J.E. Rice, M.L. Reinke, S.J. Wukitch, Y. Lin and Alcator C-Mod Team MIT-PSFC October 29, 2014 C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

2 Overview 0 1 Motivation and Background 2 Experimental Observations 3 Possible Mechanisms 4 Transport Simulations 5 Summary and Future Work C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

3 Overview 1 Motivation and Background 1 Motivation and Background 2 Experimental Observations 3 Possible Mechanisms 4 Transport Simulations 5 Summary and Future Work C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

4 1 Motivation and Background Motivation: Radiation & Impurity Control Radiation & Impurity Control Impurity dilutes plasmas. Energy loss by impurity radiation could affect the plasma performance, and even cause disruptions. Impurity types: Type Example Control Method Intrinsic (non-recycling) C, B, Mo Wall condition Non-intrinsic (non-recycling) Ni, Ca Diverting at edge Non-intrinsic (recycling) He, Ne, Ar Modify transport A phenomenon potentially useful for active recycling impurity control is observed. C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

5 HiReX & ICRF Conditioning X-ray Crystal Spectroscopy System (HiReX-Sr) 1 Motivation and Background Background: HiReX & ICRF Conditioning At C-Mod, HiReX-Sr puffs argon to get ǫ, Ω tor, T I (T i ),T e. a.u w , det 2, row=190:210, time= s wn4 wn3 x y pixel q r measured spectrum multiple gaussian fits baseline fitted spectrum residue j+z a k Argon is chemically inert and backscattered by wall. This efficient recycling acts like a continuous source. After vessel opening, H/D ratio is high. ICRF conditioning is necessary for normal operation as well as to reduce H/D ratio. C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

6 Overview 2 Experimental Observations 1 Motivation and Background 2 Experimental Observations 3 Possible Mechanisms 4 Transport Simulations 5 Summary and Future Work C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

7 2 Experimental Observations Argon pumpout during ICRF Argon Intensity Strongly Decreses during ICRF MA a.u. a.u Ip & Argon Puff Core Ar 16+ w line intensity. No RF Edge Ar 16+ w line intensity. No RF Core w/o RF Edge w/o RF (a) (b) (c) a.u. (a) Argon puff at 0.3 s for 75 ms (blue line). (b, c) Without ICRF, argon intensity steady(due to recycling). a.u. a.u Core Ar 16+ w line intensity. With RF Edge Ar 16+ w line intensity. With RF Core w/ RF Edge w/ RF 0.8 (d) (e) MW MW (d, e) With ICRF (red line, 0.6 MW ICRF), core and edge argon intensities strongly decrease (with decay time 50 ms). C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

8 2 Experimental Observations preferred H/D ratio There is a preferred n H /n D for the pumpout effect I(min)/I(max) Pumpout only in plasmas with relatively high H/D ratio. An optimum n H nd 48±5% n(h)/n(d) Show later: n H nd = 46% argon - RF wave interaction C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

9 2 Experimental Observations Power Threshold A Power Threshold for Pumpout Effect Current I p (a) MA MW ICRF power ICRF power (c) No pumpout when P ICRF < 0.5MW a.u Core Ar 16+ w line intensity. With RF (d) Core Pumpout when P ICRF > 0.5MW Edge Edge Ar 16+ w line intensity (e) a.u C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

10 2 Experimental Observations Argon Intensity Recovers when ICRF Turns Off Argon Intensity Recovers when ICRF Turns Off MA Ip Core Ar 16+ w line intensity [a.u.] and RF power[mw] a.u. The argon intensity will recover to pre-icrf level when ICRF turns off C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

11 2 Experimental Observations Mo Injection and Non-Resonant Lines Mo Injection and Non-Resonant Lines Molybdenum intensity increases for most shots Emission lines from non-resonant argon charge states also decrease with strength similar to resonant argon lines W - INT, LOC: Ar 16+ 1s2p->1s M - Int, LOC: 4-30 Mo 32+ 2p->4d RF Power (MW) & RF power [MW] [MW] [AU] Ar XV Ar 14+ :1s 2 2s2p->1s 2 2s 2 ICRF Line Brightness n H /n D H/D ratio Time [sec] C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

12 Overview 3 Possible Mechanisms 1 Motivation and Background 2 Experimental Observations 3 Possible Mechanisms 4 Transport Simulations 5 Summary and Future Work C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

13 Possible Mechanisms 3 Possible Mechanisms Possible Mechanisms 1. Impurity-wave interaction. 2. Modification of source/recycling (edge effect). 3. Change of other plasma parameters: T e, n e, etc. C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

14 3 Possible Mechanisms Impurity - Wave interaction 1. Impurity - Wave interaction: 2 nd Harmonic Resonance with Finite k x π ρ L E + E + 1. Ar nd harmonic resonance layer overlaps with the H-D mode conversion layer when n H n D 46%. x x 2. Enhanced E r at H-D mode conversion layer. t = 0 t = p/ω Figure from J. P. Freidberg. Plasma physics and fusion energy. 3. When Ω RF = 2Ω I,k x π ρ L 0, argon can be perpendicularly accelerated and deconfined (v E). C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

15 3 Possible Mechanisms Impurity - Wave interaction Optimum H/D ratio n H n D = 46% for Ar 16+ ) The mode conversion layer (n 2 = S for H+D plasma is located at: ω 2 ph n 2 = 1 ωrf 2 ω2 H ωrf 2 (1) ω2 D The MC layer (R MC ) and impurity resonant layer (R resonant ): γ n H R MC = eb γ n D m p ω RF 1+2γ R 0 R resonant = n Z eb 0 R 0 Am p ω RF (2) ω 2 pd R MC = R resonant requires: ) 2 ( γ A Z+) = 1 ( n Z A 2 ( n Z 2 A) 1 2 (3) γ ( Ar 16+) = 46% γ ( Ar 17+) = 29% C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

16 3 Possible Mechanisms Impurity - Wave interaction B-dependence of Resonance Position The required n H /n D doesn t depend on B, but the resonance position has B dependence. The resonance/mode-conversion layer locates in HFS Ar16+ 80MHz B 0 = T T, 80 MHz, H/D = 0.46 MC layer 0.8 R [m] Ω I H-D MC layer 0.4 2Ω Ar 16+ 2Ω Ar Ω I H/D ratio H/D ratio= MHz HD MC layer Ar16+ 1st 2nd 3rd -0.2 R [m] B T C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

17 3 Possible Mechanisms Modification of source/recycling 2. Modification of source/recycling At high H/D ratio, the single path absorption of ICRF wave, launched from low field side, will be poor. Plasma edge potential may change the impurity influx [L. Oren, 1982]. Impurity accumulations under negative edge potential ( V) Steady state (recycling) under zero or positive edge potential. But no pumoout... Wall recycling modified by ICRF? Coincidence with Mo injections and the decay of non-resonant lines suggest source effect. C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

18 3 Possible Mechanisms Temperature/Density effect 3. Temperature/Density Effect n e is irrelevant: n e could be the same, increase or decrease. T e drops < 10% (probably due to LH off in these experiments), not enough to cause the strong argon decay. T e -independent beryllium-like argon emission line 1s 2 2s2p 1s 2 2s2 also drops. C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

19 Overview 4 Transport Simulations 1 Motivation and Background 2 Experimental Observations 3 Possible Mechanisms 4 Transport Simulations 5 Summary and Future Work C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

20 4 Transport Simulations STRAHL Introduction STRAHL: 1-D Time-Evolving Impurity Transport Code Charge State Density [a.u.] r/a Density profiles of different argon charge states with given density and temperature profiles calculated by STRAHL. Experimental n e (r,t),t e (r,t). Specify diffusion D(r,t), convection V (r,t). Ionization, recombination and charge exchange processes calculated with atomic data. At Alcator C-Mod: Calcium transport [N.T. Howard, 2012]. Argon/moly transport with synthetic measurement of HiReX-Sr [M.L. Reinke, 2013]. C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

21 4 Transport Simulations STRAHL simulation 1. An Outward Convection from Impurity-Wave Intercation Preliminary simulation qualitatively reproduced the evolution of Ar 16+ brightness [a.u.] with Gaussian shape outward pinch. STRAHL D=1 m/s 2, V t<1.0 =0 m/s, V t 1.0 = 15e (r/a 0.4) m/s Experiment (HiReX-Sr) V(r) [m/s] V(t) [m/s] r/a r/a r/a C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

22 4 Transport Simulations STRAHL simulation 1. An Outward Convection from Impurity-Wave Intercation Preliminary simulation qualitatively reproduced the evolution of Ar 16+ brightness [a.u.] with Gaussian shape outward pinch. STRAHL D=1 m/s 2, V t<1.0 =0 m/s, V t 1.0 = 15e (r/a 0.4) m/s Experiment (HiReX-Sr) Z line brightness [a.u.] r/a Z line brightness [a.u.] r/a C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

23 4 Transport Simulations STRAHL simulation 1. An Outward Convection from Impurity-Wave Intercation But the evolutions of normalized brightness show disagreement between STRAHL simulation and experiment. STRAHL(normalized) D=1 m/s 2, V t<1.0 =0 m/s, V t 1.0 = 15e (r/a 0.4) m/s Experiment(normalized) (HiReX-Sr) normalized Z line brightness r/a normalized Z line brightness r/a C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

24 4 Transport Simulations STRAHL simulation 1. An Outward Convection from Impurity-Wave Intercation Also the evolutions of Ar 14+ and Ar 15+ density underestimate the pumpout effect. STRAHL: Ar 15+ density STRAHL: Ar 14+ density Chaege State Density [a.u.] r/a Chaege State Density [a.u.] r/a C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

25 4 Transport Simulations STRAHL simulation 2. A Reduction of Source due to Edge Effect A reduction in source shows similar result for Ar 16+ brightness. STRAHL(normalized) D=1 m/s 2, Source t Source t<1.0 Experiment (HiReX-Sr) Source r/a r/a C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

26 4 Transport Simulations STRAHL simulation 2. A Reduction of Source due to Edge Effect A reduction in source shows similar result for Ar 16+ brightness. STRAHL(normalized) D=1 m/s 2, Source t Source t<1.0 Experiment (HiReX-Sr) Z line brightness [a.u.] r/a Z line brightness [a.u.] r/a C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

27 4 Transport Simulations STRAHL simulation 2. A Reduction of Source due to Edge Effect The evolutions of normalized brightness show better agreement between STRAHL simulation and experiment. STRAHL(normalized) D=1 m/s 2, Source t Source t<1.0 Experiment (HiReX-Sr) normalizedz line brightness r/a normalized Z line brightness r/a C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

28 4 Transport Simulations STRAHL simulation 2. A Reduction of Source due to Edge Effect The evolutions of Ar 14+ and Ar 15+ density with a source reduction agree with the observation. Source reduction is a better explaination. STRAHL: Ar 15+ density STRAHL: Ar 14+ density Chaege State Density [a.u.] r/a Chaege State Density [a.u.] r/a C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

29 Overview 5 Summary and Future Work 1 Motivation and Background 2 Experimental Observations 3 Possible Mechanisms 4 Transport Simulations 5 Summary and Future Work C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

30 Summary 5 Summary and Future Work Summary Argon level is strongly reduced with ICRF in H-D plasmas. Impurity-wave interaction and source/edge effect are the most probable reasons. 1. Impurity-wave interaction: probable A optimum n H nd close to theoretical value; a power threshold. Argon temperature increase is not observed. Emission lines from non-resonant argon charge states also decrease with strength similar to resonant argon lines. 2. Source/edge effect: probable Confinement time similar to other non-recycling impurities. Molybdenum increases for many shots. Need edge diagnostics to identify. 3. Change of other plasma parameter: seems not relevant n e is irrelevant with pumpout. T e drop is too small, and cannot explain the drop of T e-independent line intensities. Preliminary STRAHL simulations suggest that edge source effect may be more responsible for this pumpout effect. C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

31 Future Work 5 Summary and Future Work Future Work More work needed to identify the origin of the argon reduction. Post-boronization experiments to remove the effect of molybdenum injection. B field scanning to move the resonance position and compare the reduction amplitude. Impurity-wave interaction could happen on non-recycling impurites (like calcium), whose source is determined. ICRF experiment with calcium at proper n H nd 17% will be helpful. Revisit the experiments with more diagnostics: edge probes, PCI, etc. C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

32 Thanks

33 5 Summary and Future Work Future Work C Gao etc., MIT-PSFC 56th APS-DPP New Orleans, Louisiana October 29, / 25

ICRF Induced Argon Pumpout in H-D Plasmas in Alcator C-Mod

ICRF Induced Argon Pumpout in H-D Plasmas in Alcator C-Mod ICRF Induced Argon Pumpout in H-D Plasmas in Alcator C-Mod C. Gao, J.E. Rice, M.L. Reinke, Y. Lin, S.J. Wukitch, L. Delgado-Aparicio, E.S. Marmar, and Alcator C-Mod Team MIT-PSFC, University of York, Princeton

More information

ITB Transport Studies in Alcator C-Mod. Catherine Fiore MIT Plasma Science and Fusion Center Transport Task Force March 26th Boulder, Co

ITB Transport Studies in Alcator C-Mod. Catherine Fiore MIT Plasma Science and Fusion Center Transport Task Force March 26th Boulder, Co Transport Studies in Alcator C-Mod Catherine Fiore MIT Plasma Science and Fusion Center Transport Task Force March 26th Boulder, Co With Contributions from: I. Bespamyatnov, P. T. Bonoli*, D. Ernst*, M.

More information

ICRF Mode Conversion Flow Drive on the Alcator C Mod Tokamak

ICRF Mode Conversion Flow Drive on the Alcator C Mod Tokamak 23 rd IAEA Fusion Energy Conference, EXW/4 1 ICRF Mode Conversion Flow Drive on the Alcator C Mod Tokamak Yijun Lin, J.E. Rice, S.J. Wukitch, M.L. Reinke, M. Greenwald, A. E. Hubbard, E.S. Marmar, Y. Podpaly,

More information

Reduction of Turbulence and Transport in the Alcator C-Mod Tokamak by Dilution of Deuterium Ions with Nitrogen and Neon Injection

Reduction of Turbulence and Transport in the Alcator C-Mod Tokamak by Dilution of Deuterium Ions with Nitrogen and Neon Injection Reduction of Turbulence and Transport in the Alcator C-Mod Tokamak by Dilution of Deuterium Ions with Nitrogen and Neon Injection M. Porkolab, P. C. Ennever, S. G. Baek, E. M. Edlund, J. Hughes, J. E.

More information

Power balance of Lower Hybrid Current Drive in the SOL of High Density Plasmas on Alcator C-Mod

Power balance of Lower Hybrid Current Drive in the SOL of High Density Plasmas on Alcator C-Mod Power balance of Lower Hybrid Current Drive in the SOL of High Density Plasmas on Alcator C-Mod I.C. Faust, G.M. Wallace, S.G. Baek, D. Brunner, B. LaBombard, R.R. Parker, Y. Lin, S. Shiraiwa, J.L. Terry,

More information

OVERVIEW OF THE ALCATOR C-MOD PROGRAM. IAEA-FEC November, 2004 Alcator Team Presented by Martin Greenwald MIT Plasma Science & Fusion Center

OVERVIEW OF THE ALCATOR C-MOD PROGRAM. IAEA-FEC November, 2004 Alcator Team Presented by Martin Greenwald MIT Plasma Science & Fusion Center OVERVIEW OF THE ALCATOR C-MOD PROGRAM IAEA-FEC November, 2004 Alcator Team Presented by Martin Greenwald MIT Plasma Science & Fusion Center OUTLINE C-Mod is compact, high field, high density, high power

More information

Helium ELMy H-modes in Alcator C-Mod in Support of ITER Helium Operating Phases

Helium ELMy H-modes in Alcator C-Mod in Support of ITER Helium Operating Phases Helium ELMy H-modes in Alcator C-Mod in Support of ITER Helium Operating Phases C. E. Kessel 1, S. M. Wolfe 2, M. L. Reinke 3, M. A. Chilenski 2, J. W. Hughes 2, Y. Lin 2, S. Wukitch 2 and the C-Mod Team

More information

Poloidal Variation of High-Z Impurity Density in ICRF- Heated Alcator C-Mod Plasmas

Poloidal Variation of High-Z Impurity Density in ICRF- Heated Alcator C-Mod Plasmas Poloidal Variation of High-Z Impurity Density in ICRF- Heated Alcator C-Mod Plasmas M.L. Reinke, I.H. Hutchinson, J.E. Rice, N.T. Howard, A. Bader, S. Wukitch, Y. Lin, D.C. Pace, A. Hubbard, J.W. Hughes

More information

Characterization of neo-classical tearing modes in high-performance I- mode plasmas with ICRF mode conversion flow drive on Alcator C-Mod

Characterization of neo-classical tearing modes in high-performance I- mode plasmas with ICRF mode conversion flow drive on Alcator C-Mod 1 EX/P4-22 Characterization of neo-classical tearing modes in high-performance I- mode plasmas with ICRF mode conversion flow drive on Alcator C-Mod Y. Lin, R.S. Granetz, A.E. Hubbard, M.L. Reinke, J.E.

More information

ICRF Mode Conversion Flow Drive on Alcator C-Mod and Projections to Other Tokamaks

ICRF Mode Conversion Flow Drive on Alcator C-Mod and Projections to Other Tokamaks ICRF Mode Conversion Flow Drive on Alcator C-Mod and Projections to Other Tokamaks Y. Lin, J.E. Rice, S.J. Wukitch, M.J. Greenwald, A.E. Hubbard, A. Ince- Cushman, L. Lin, E.S. Marmar, M. Porkolab, M.L.

More information

Observations of Rotation Reversal and Fluctuation Hysteresis in Alcator C-Mod Plasmas

Observations of Rotation Reversal and Fluctuation Hysteresis in Alcator C-Mod Plasmas Observations of Rotation Reversal and Fluctuation Hysteresis in Alcator C-Mod Plasmas N.M. Cao 1, J.E. Rice 1, A.E. White 1, S.G. Baek 1, M.A. Chilenski 1, P.H. Diamond 2, A.E. Hubbard 1, J.W. Hughes 1,

More information

Observations of Counter-Current Toroidal Rotation in Alcator C-Mod LHCD Plasmas

Observations of Counter-Current Toroidal Rotation in Alcator C-Mod LHCD Plasmas 1 EX/P5-4 Observations of Counter-Current Toroidal Rotation in Alcator C-Mod LHCD Plasmas J.E. Rice 1), A.C. Ince-Cushman 1), P.T. Bonoli 1), M.J. Greenwald 1), J.W. Hughes 1), R.R. Parker 1), M.L. Reinke

More information

Enhanced Energy Confinement Discharges with L-mode-like Edge Particle Transport*

Enhanced Energy Confinement Discharges with L-mode-like Edge Particle Transport* Enhanced Energy Confinement Discharges with L-mode-like Edge Particle Transport* E. Marmar, B. Lipschultz, A. Dominguez, M. Greenwald, N. Howard, A. Hubbard, J. Hughes, B. LaBombard, R. McDermott, M. Reinke,

More information

Tungsten impurity transport experiments in Alcator C-Mod to address high priority R&D for ITER

Tungsten impurity transport experiments in Alcator C-Mod to address high priority R&D for ITER Tungsten impurity transport experiments in Alcator C-Mod to address high priority R&D for ITER M.L. Reinke 1, A. Loarte 2, M. Chilenski 3, N. Howard 3, F. Köchl 4, A. Polevoi 2, A. Hubbard 3, J.W. Hughes

More information

Bayesian inference of impurity transport coefficient profiles

Bayesian inference of impurity transport coefficient profiles Bayesian inference of impurity transport coefficient profiles M.A. Chilenski,, M. Greenwald, Y. Marzouk, J.E. Rice, A.E. White Systems and Technology Research MIT Plasma Science and Fusion Center/Alcator

More information

Observation of Co- and Counter Rotation Produced by Lower Hybrid Waves in Alcator C-Mod*

Observation of Co- and Counter Rotation Produced by Lower Hybrid Waves in Alcator C-Mod* Observation of Co- and Counter Rotation Produced by Lower Hybrid Waves in Alcator C-Mod* R. R. Parker, Y. Podpaly, J. Lee, M. L. Reinke, J. E. Rice, P.T. Bonoli, O. Meneghini, S. Shiraiwa, G. M. Wallace,

More information

Alcator C-Mod. Double Transport Barrier Plasmas. in Alcator C-Mod. J.E. Rice for the C-Mod Group. MIT PSFC, Cambridge, MA 02139

Alcator C-Mod. Double Transport Barrier Plasmas. in Alcator C-Mod. J.E. Rice for the C-Mod Group. MIT PSFC, Cambridge, MA 02139 Alcator C-Mod Double Transport Barrier Plasmas in Alcator C-Mod J.E. Rice for the C-Mod Group MIT PSFC, Cambridge, MA 139 IAEA Lyon, Oct. 17, Outline Double Barrier Plasma Profiles and Modeling Conditions

More information

Plasma impurity composition in Alcator C-Mod tokamak.

Plasma impurity composition in Alcator C-Mod tokamak. Plasma impurity composition in Alcator C-Mod tokamak. I. O. Bespamyatnov a, W. L. Rowan a, K. T. Liao a, M. Brookman a, M. L. Reinke b, E. S. Marmar b, M. J. Greenwald b a Institute for Fusion Studies,

More information

Ohmic and RF Heated ITBs in Alcator C-Mod

Ohmic and RF Heated ITBs in Alcator C-Mod Ohmic and RF Heated s in Alcator C-Mod William L. Rowan, Igor O. Bespamyatnov Fusion Research Center, The University of Texas at Austin C.L. Fiore, A. Dominguez, A.E. Hubbard, A. Ince-Cushman, M.J. Greenwald,

More information

Theory Work in Support of C-Mod

Theory Work in Support of C-Mod Theory Work in Support of C-Mod 2/23/04 C-Mod PAC Presentation Peter J. Catto for the PSFC theory group MC & LH studies ITB investigations Neutrals & rotation BOUT improvements TORIC ICRF Mode Conversion

More information

Developing the Physics Basis for the ITER Baseline 15 MA Scenario in Alcator C-Mod

Developing the Physics Basis for the ITER Baseline 15 MA Scenario in Alcator C-Mod Developing the Physics Basis for the ITER Baseline 15 MA Scenario in Alcator C-Mod C. E. Kessel 1, S. M. Wolfe 2, I. H. Hutchinson 2, J. W. Hughes 2, Y. Lin 2, Y. Ma 2, D. R. Mikkelsen 1, F. M. Poli 1,

More information

Gyrokine.c Analysis of the Linear Ohmic Confinement Regime in Alcator C- Mod *

Gyrokine.c Analysis of the Linear Ohmic Confinement Regime in Alcator C- Mod * Gyrokine.c Analysis of the Linear Ohmic Confinement Regime in Alcator C- Mod * Miklos Porkolab in collabora.on with J. Dorris, P. Ennever, D. Ernst, C. Fiore, M. Greenwald, A. Hubbard, E. Marmar, Y. Ma,

More information

2017 US/EU Transport Task Force Workshop April 26 th 2017 Williamsburg, VA

2017 US/EU Transport Task Force Workshop April 26 th 2017 Williamsburg, VA Pablo Rodriguez-Fernandez 1, A. E. White 1, N. M. Cao 1, A. J. Creely 1, M. J. Greenwald 1, N. T. Howard 1, A. E. Hubbard 1, J. W. Hughes 1, J. H. Irby 1, C. C. Petty 2, J. E. Rice 1 1 Plasma Science and

More information

Dependence of non-local effects on plasma parameters during cold-pulse experiments in Alcator C-Mod

Dependence of non-local effects on plasma parameters during cold-pulse experiments in Alcator C-Mod Dependence of non-local effects on plasma parameters during cold-pulse experiments in Alcator C-Mod P. Rodriguez-Fernandez 1, N.M. Cao 1, A. Creely 1, M. Greenwald 1, S. Houshmandyar 2, N.T. Howard 1,

More information

EXC/P2-02. Experiments and Simulations of ITER-like Plasmas in Alcator C-Mod

EXC/P2-02. Experiments and Simulations of ITER-like Plasmas in Alcator C-Mod EXC/P2-02 Experiments and Simulations of ITER-like Plasmas in Alcator C-Mod J. R. Wilson 1, C. E. Kessel 1, S. Wolfe 2, I. Hutchinson 2, P. Bonoli 2, C. Fiore 2, A. Hubbard 2, J. Hughes 2, Y. Lin 2, Y.

More information

Non-local Heat Transport in Alcator C-Mod Ohmic L-mode Plasmas

Non-local Heat Transport in Alcator C-Mod Ohmic L-mode Plasmas Non-local Heat Transport in Alcator C-Mod Ohmic L-mode Plasmas C. Gao 1, J.E.Rice 1, H.J. Sun 2,3, M.L.Reinke 1, N.T.Howard 1, D. Mikkelson 4, A.E.Hubbard 1, M.Chilenski 1, J.R.Walk 1, J.W.Hughes 1, P.Ennever

More information

Studies of Lower Hybrid Range of Frequencies Actuators in the ARC Device

Studies of Lower Hybrid Range of Frequencies Actuators in the ARC Device Studies of Lower Hybrid Range of Frequencies Actuators in the ARC Device P. T. Bonoli, Y. Lin. S. Shiraiwa, G. M. Wallace, J. C. Wright, and S. J. Wukitch MIT PSFC, Cambridge, MA 02139 59th Annual Meeting

More information

Investigation of Intrinsic Rotation Dependencies in Alcator C-Mod

Investigation of Intrinsic Rotation Dependencies in Alcator C-Mod Investigation of Intrinsic Rotation Dependencies in Alcator C-Mod D. Kwak, A. E. White, J. E. Rice, N. T. Howard, C. Gao, M. L. Reinke, M. Greenwald, C. Angioni, R. M. McDermott, and the C-Mod and ASDEX

More information

EX/C3-5Rb Relationship between particle and heat transport in JT-60U plasmas with internal transport barrier

EX/C3-5Rb Relationship between particle and heat transport in JT-60U plasmas with internal transport barrier EX/C-Rb Relationship between particle and heat transport in JT-U plasmas with internal transport barrier H. Takenaga ), S. Higashijima ), N. Oyama ), L. G. Bruskin ), Y. Koide ), S. Ide ), H. Shirai ),

More information

Pedestals and Fluctuations in C-Mod Enhanced D α H-modes

Pedestals and Fluctuations in C-Mod Enhanced D α H-modes Pedestals and Fluctuations in Enhanced D α H-modes Presented by A.E.Hubbard With Contributions from R.L. Boivin, B.A. Carreras 1, S. Gangadhara, R. Granetz, M. Greenwald, J. Hughes, I. Hutchinson, J. Irby,

More information

ICRF Minority-Heated Fast-Ion Distributions on the Alcator C-Mod: Experiment and Simulation

ICRF Minority-Heated Fast-Ion Distributions on the Alcator C-Mod: Experiment and Simulation ICRF Minority-Heated Fast-Ion Distributions on the Alcator C-Mod: Experiment and Simulation A. Bader 1, P. Bonoli 1, R. Granetz 1, R.W. Harvey 2, E.F. Jaeger 3, R. Parker 1, S. Wukitch 1. 1)MIT-PSFC, Cambridge,

More information

Lower Hybrid Wave Induced Rotation on Alcator C-Mod* Ron Parker, Yuri Podpaly, John Rice, Andréa Schmidt

Lower Hybrid Wave Induced Rotation on Alcator C-Mod* Ron Parker, Yuri Podpaly, John Rice, Andréa Schmidt Lower Hybrid Wave Induced Rotation on Alcator C-Mod* Ron Parker, Yuri Podpaly, John Rice, Andréa Schmidt *Work supported by USDoE awards DE-FC-99ER551 and DE-AC-7CH373 Abstract Injection of RF power in

More information

TRANSPORT PROGRAM C-MOD 5 YEAR REVIEW MAY, 2003 PRESENTED BY MARTIN GREENWALD MIT PLASMA SCIENCE & FUSION CENTER

TRANSPORT PROGRAM C-MOD 5 YEAR REVIEW MAY, 2003 PRESENTED BY MARTIN GREENWALD MIT PLASMA SCIENCE & FUSION CENTER TRANSPORT PROGRAM C-Mod C-MOD 5 YEAR REVIEW MAY, 2003 PRESENTED BY MARTIN GREENWALD MIT PLASMA SCIENCE & FUSION CENTER C-MOD - OPPORTUNITIES AND CHALLENGES Prediction and control are the ultimate goals

More information

Lower Hybrid Current Drive Experiments on Alcator C-Mod: Comparison with Theory and Simulation

Lower Hybrid Current Drive Experiments on Alcator C-Mod: Comparison with Theory and Simulation Lower Hybrid Current Drive Experiments on Alcator C-Mod: Comparison with Theory and Simulation P.T. Bonoli, A. E. Hubbard, J. Ko, R. Parker, A.E. Schmidt, G. Wallace, J. C. Wright, and the Alcator C-Mod

More information

Alcator C-Mod. Particle Transport in the Scrape-off Layer and Relationship to Discharge Density Limit in Alcator C-Mod

Alcator C-Mod. Particle Transport in the Scrape-off Layer and Relationship to Discharge Density Limit in Alcator C-Mod Alcator C-Mod Particle Transport in the Scrape-off Layer and Relationship to Discharge Density Limit in Alcator C-Mod B. LaBombard, R.L. Boivin, M. Greenwald, J. Hughes, B. Lipschultz, D. Mossessian, C.S.

More information

Overview of Alcator C-Mod Research

Overview of Alcator C-Mod Research Overview of C-Mod Research Presented by E.S. Marmar On behalf of the C-Mod Team APS-DPP04 Paper JO3.001 Work Supported by USDoE Office of Fusion Energy Sciences SOL flows impose a toroidal rotation boundary

More information

Measurements of relativistic emission from runaway electrons in Alcator C-Mod: spectrum, polarization, and spatial structure

Measurements of relativistic emission from runaway electrons in Alcator C-Mod: spectrum, polarization, and spatial structure Measurements of relativistic emission from runaway electrons in Alcator C-Mod: spectrum, polarization, and spatial structure R. Granetz, R. Mumgaard MIT PSFC APS-DPP New Orleans 2014/10/30 Motivation Modeling

More information

Observation of Neo-Classical Ion Pinch in the Electric Tokamak*

Observation of Neo-Classical Ion Pinch in the Electric Tokamak* 1 EX/P6-29 Observation of Neo-Classical Ion Pinch in the Electric Tokamak* R. J. Taylor, T. A. Carter, J.-L. Gauvreau, P.-A. Gourdain, A. Grossman, D. J. LaFonteese, D. C. Pace, L. W. Schmitz, A. E. White,

More information

Studies of Turbulence and Transport in Alcator C- Mod H-Mode Plasmas with Phase Contrast Imaging and Comparisons with GYRO*

Studies of Turbulence and Transport in Alcator C- Mod H-Mode Plasmas with Phase Contrast Imaging and Comparisons with GYRO* Studies of Turbulence and Transport in C- Mod H-Mode Plasmas with Phase Contrast Imaging and Comparisons with GYRO* M. Porkolab 1, L. Lin 1, E.M. Edlund 1, J.C. Rost 1, C.L. Fiore 1, M. Greenwald 1, Y.

More information

Helium-3 transport experiments in the scrape-off layer with the Alcator C-Mod omegatron ion mass spectrometer

Helium-3 transport experiments in the scrape-off layer with the Alcator C-Mod omegatron ion mass spectrometer PHYSICS OF PLASMAS VOLUME 7, NUMBER 11 NOVEMBER 2000 Helium-3 transport experiments in the scrape-off layer with the Alcator C-Mod omegatron ion mass spectrometer R. Nachtrieb a) Lutron Electronics Co.,

More information

Impurity transport analysis & preparation of W injection experiments on KSTAR

Impurity transport analysis & preparation of W injection experiments on KSTAR Impurity transport analysis & preparation of W injection experiments on KSTAR J. H. Hong, H. Y. Lee, S. H. Lee, S. Jang, J. Jang, T. Jeon, H. Lee, and W. Choe ( ) S. G. Lee, C. R. Seon, J. Kim, ( ) 마스터부제목스타일편집

More information

Active and Fast Particle Driven Alfvén Eigenmodes in Alcator C-Mod

Active and Fast Particle Driven Alfvén Eigenmodes in Alcator C-Mod Active and Fast Particle Driven Alfvén Eigenmodes in Alcator C-Mod JUST DID IT. J A Snipes, N Basse, C Boswell, E Edlund, A Fasoli #, N N Gorelenkov, R S Granetz, L Lin, Y Lin, R Parker, M Porkolab, J

More information

Fast ion generation with novel three-ion radiofrequency heating scenarios:

Fast ion generation with novel three-ion radiofrequency heating scenarios: 1 Fast ion generation with novel three-ion radiofrequency heating scenarios: from JET, W7-X and ITER applications to aneutronic fusion studies Yevgen Kazakov 1, D. Van Eester 1, J. Ongena 1, R. Bilato

More information

Validation Study of gyrokinetic simulation (GYRO) near the edge in Alcator C-Mod ohmic discharges

Validation Study of gyrokinetic simulation (GYRO) near the edge in Alcator C-Mod ohmic discharges Validation Study of gyrokinetic simulation (GYRO) near the edge in Alcator C-Mod ohmic discharges C. Sung, A. E. White, N. T. Howard, D. Mikkelsen, C. Holland, J. Rice, M. Reinke, C. Gao, P. Ennever, M.

More information

This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract

This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract This work was performed under the auspices of the U.S. Department of Energy by under contract DE-AC52-7NA27344. Lawrence Livermore National Security, LLC The ITER tokamak Tungsten (W) is attractive as

More information

In-situ wavelength calibration and temperature control for the C-Mod high-resolution X-ray crystal imaging spectrometer

In-situ wavelength calibration and temperature control for the C-Mod high-resolution X-ray crystal imaging spectrometer In-situ wavelength calibration and temperature control for the C-Mod high-resolution X-ray crystal imaging spectrometer Luis F. Delgado-Aparicio 1, Y. Podpaly 2, J. Rice 2, M. Bitter 1, K. Hill 1, C. Gao

More information

Recent results from lower hybrid current drive experiments on Alcator C-Mod

Recent results from lower hybrid current drive experiments on Alcator C-Mod Recent results from lower hybrid current drive experiments on Alcator C-Mod R. R. Parker, S.-G. Baek, C. Lau, Y. Ma, O. Meneghini, R. T. Mumgaard, Y. Podpaly, M. Porkolab, J.E. Rice, A. E. Schmidt, S.

More information

Evaluation of Anomalous Fast-Ion Losses in Alcator C-Mod

Evaluation of Anomalous Fast-Ion Losses in Alcator C-Mod Evaluation of Anomalous Fast-Ion Losses in Alcator C-Mod S. D. Scott Princeton Plasma Physics Laboratory In collaboration with R. Granetz, D. Beals, M. Greenwald MIT PLASMA Science and Fusion Center W.

More information

Progress in Modeling of ARIES ACT Plasma

Progress in Modeling of ARIES ACT Plasma Progress in Modeling of ARIES ACT Plasma And the ARIES Team A.D. Turnbull, R. Buttery, M. Choi, L.L Lao, S. Smith, General Atomics H. St John, G. Staebler C. Kessel Princeton Plasma Physics Laboratory

More information

Development of LH wave fullwave simulation based on FEM

Development of LH wave fullwave simulation based on FEM Development of LH wave fullwave simulation based on FEM S. Shiraiwa and O. Meneghini on behalf of LHCD group of Alacator C-Mod PSFC, MIT 2010/03/10 San-Diego, CA Special acknowledgements : R. Parker, P.

More information

ICRF Loading Studies on Alcator C-Mod

ICRF Loading Studies on Alcator C-Mod ICRF Loading Studies on Alcator C-Mod 46 th Annual Meeting of the APS Division of Plasma Physics November 15-19, 19, 2004 A. Parisot, S.J. S.J. Wukitch,, P. Bonoli,, J.W. Hughes, B. Labombard,, Y. Lin,

More information

Exhaust scenarios. Alberto Loarte. Plasma Operation Directorate ITER Organization. Route de Vinon sur Verdon, St Paul lez Durance, France

Exhaust scenarios. Alberto Loarte. Plasma Operation Directorate ITER Organization. Route de Vinon sur Verdon, St Paul lez Durance, France Exhaust scenarios Alberto Loarte Plasma Operation Directorate ITER Organization Route de Vinon sur Verdon, 13067 St Paul lez Durance, France Acknowledgements: Members of ITER Organization (especially R.

More information

Low-collisionality density-peaking in GYRO simulations of C-Mod plasmas

Low-collisionality density-peaking in GYRO simulations of C-Mod plasmas Low-collisionality density-peaking in GYRO simulations of C-Mod plasmas D. R. Mikkelsen, M. Bitter, K. Hill, PPPL M. Greenwald, J.W. Hughes, J. Rice, MIT J. Candy, R. Waltz, General Atomics APS Division

More information

Studies of H Mode Plasmas Produced Directly by Pellet Injection in DIII D

Studies of H Mode Plasmas Produced Directly by Pellet Injection in DIII D Studies of H Mode Plasmas Produced Directly by Pellet Injection in by P. Gohil in collaboration with L.R. Baylor,* K.H. Burrell, T.C. Jernigan,* G.R. McKee, *Oak Ridge National Laboratory University of

More information

Transport of Helium Impurity in Alcator C-Mod*

Transport of Helium Impurity in Alcator C-Mod* Transport of Helium Impurity in Alcator C-Mod* K. T. Liao, W. L. Rowan, I. O. Bespamyatnov, W. Horton, and X.R. Fu, R. Granetz, J. Hughes, Y. Ma, J. Walk Institute for Fusion Studies, The University of

More information

Non-local Heat Transport, Core Rotation Reversals and Energy Confinement Saturation in Alcator C-Mod Ohmic L-mode Plasmas

Non-local Heat Transport, Core Rotation Reversals and Energy Confinement Saturation in Alcator C-Mod Ohmic L-mode Plasmas 1 EX/2-2 Non-local Heat Transport, Core Rotation Reversals and Energy Confinement Saturation in Alcator C-Mod Ohmic L-mode Plasmas J.E. Rice 1, M.L. Reinke 1, H.J. Sun 2, P.H. Diamond 3,4, C. Gao 1, N.T.

More information

A Study of Directly Launched Ion Bernstein Waves in a Tokamak

A Study of Directly Launched Ion Bernstein Waves in a Tokamak PFC-/JA-86-6 A Study of Directly Launched Ion Bernstein Waves in a Tokamak Y. Takase, J. D. Moody, C. L. Fiore, F. S. McDermott, M. Porkolab, and J. Squire Plasma Fusion Center Massachusetts Institute

More information

C-Mod Transport Program

C-Mod Transport Program C-Mod Transport Program PAC 2006 Presented by Martin Greenwald MIT Plasma Science & Fusion Center 1/26/2006 Introduction Programmatic Focus Transport is a broad topic so where do we focus? Where C-Mod

More information

The Instrumental Function of the X-ray Imaging Crystal Spectrometer on Alcator C-Mod

The Instrumental Function of the X-ray Imaging Crystal Spectrometer on Alcator C-Mod The Instrumental Function of the X-ray Imaging Crystal Spectrometer on Alcator C-Mod M. Bitter, K. W. Hill, B. Stratton, S. Scott Princeton Plasma Physics Laboratory, Princeton, NJ, USA A. Ince-Cushman,

More information

Spontaneous Core Toroidal Rotation in Alcator C- Mod L-Mode, H-Mode and ITB Plasmas.

Spontaneous Core Toroidal Rotation in Alcator C- Mod L-Mode, H-Mode and ITB Plasmas. PSFC/JA-8-11 Spontaneous Core Toroidal Rotation in Alcator C- Mod L-Mode, H-Mode and ITB Plasmas. Rice, J.E.; Ince-Cushman, A.C.; Reinke, M.L.; Podpaly, Y.; Greenwald, M.J.; LaBombard, B.S.; Marmar, E.S.

More information

Cross-Field Plasma Transport and Main Chamber Recycling in Diverted Plasmas on Alcator C-Mod

Cross-Field Plasma Transport and Main Chamber Recycling in Diverted Plasmas on Alcator C-Mod Cross-Field Plasma Transport and Main Chamber Recycling in Diverted Plasmas on Alcator C-Mod B. LaBombard, M. Umansky, R.L. Boivin, J.A. Goetz, J. Hughes, B. Lipschultz, D. Mossessian, C.S. Pitcher, J.L.Terry,

More information

Study of B +1, B +4 and B +5 impurity poloidal rotation in Alcator C-Mod plasmas for 0.75 ρ 1.0.

Study of B +1, B +4 and B +5 impurity poloidal rotation in Alcator C-Mod plasmas for 0.75 ρ 1.0. Study of B +1, B +4 and B +5 impurity poloidal rotation in Alcator C-Mod plasmas for 0.75 ρ 1.0. Igor Bespamyatnov, William Rowan, Ronald Bravenec, and Kenneth Gentle The University of Texas at Austin,

More information

Active and Passive MHD Spectroscopy on Alcator C-Mod

Active and Passive MHD Spectroscopy on Alcator C-Mod Active and Passive MHD Spectroscopy on Alcator C-Mod J A Snipes, D A Schmittdiel, C Boswell, A Fasoli *, W Burke, R S Granetz, R R Parker, S Sharapov #, R Vieira MIT Plasma Science and Fusion Center, Cambridge,

More information

Impurity expulsion in an RFP plasma and the role of temperature screening

Impurity expulsion in an RFP plasma and the role of temperature screening Impurity expulsion in an RFP plasma and the role of temperature screening S. T. A. Kumar, D. J. Den Hartog, R. M. Magee, G. Fiksel, D. Craig Department of Physics, University of Wisconsin-Madison, Madison,Wisconsin,

More information

Improved Plasma Confinement by Ion Bernstein Waves (IBWs) Interacting with Ions in JET (Joint European Torus)

Improved Plasma Confinement by Ion Bernstein Waves (IBWs) Interacting with Ions in JET (Joint European Torus) Improved Plasma Confinement by Ion Bernstein Waves (IBWs) Interacting with Ions in JET (Joint European Torus) PD/P-01 C. Castaldo 1), R. Cesario 1), Y, Andrew 2), A. Cardinali 1), V. Kiptly 2), M. Mantsinen

More information

CONFINEMENT OF INJECTED SILICON IN THE ALCATOR A TOKAMAK

CONFINEMENT OF INJECTED SILICON IN THE ALCATOR A TOKAMAK CONFNEMENT OF NJECTED SLCON N THE ALCATOR A TOKAMAK E.S. Marmar and J.E. Rice MTPlasma Fusion Center Cambridge, MA. 2139 and S.A. Allen Department of Physics, Johns Hopkins University, Baltimore, MD. 21218

More information

Time-domain simulation and benchmark of LHCD experiment at ITER relevant parameters

Time-domain simulation and benchmark of LHCD experiment at ITER relevant parameters Time-domain simulation and benchmark of LHCD experiment at ITER relevant parameters S. Shiraiwa, P. Bonoli, F. Poli 1, R. W, Harvey 2, C. Kessel 1, R. Parker, and G. Wallace MIT-PSFC, PPPL 1, and CompX

More information

Density Peaking At Low Collisionality on Alcator C-Mod

Density Peaking At Low Collisionality on Alcator C-Mod Density Peaking At Low Collisionality on Alcator C-Mod APS-DPP Meeting Philadelphia, 10/31/2006 M. Greenwald, D. Ernst, A. Hubbard, J.W. Hughes, Y. Lin, J. Terry, S. Wukitch, K. Zhurovich, Alcator Group

More information

Formation and stability of impurity snakes in tokamak plasmas

Formation and stability of impurity snakes in tokamak plasmas PSFC/JA--9 Formation and stability of impurity snakes in tokamak plasmas L. Delgado-Aparicio,, L. Sugiyama, R. Granetz, J. Rice, Y. Podpaly, M. Reinke, D. Gates, P. Beirsdorfer 4, M. Bitter, S. Wolfe,

More information

Turbulence and transport reduction with innovative plasma shapes in TCV - correlation ECE measurements and gyrokinetic simulations

Turbulence and transport reduction with innovative plasma shapes in TCV - correlation ECE measurements and gyrokinetic simulations Turbulence and transport reduction with innovative plasma shapes in TCV - correlation ECE measurements and gyrokinetic simulations A. Pochelon, and the TCV team 1 Ecole Polytechnique de Lausanne (EPFL)

More information

Integrated Particle Transport Simulation of NBI Plasmas in LHD )

Integrated Particle Transport Simulation of NBI Plasmas in LHD ) Integrated Particle Transport Simulation of NBI Plasmas in LHD Akira SAKAI, Sadayoshi MURAKAMI, Hiroyuki YAMAGUCHI, Arimitsu WAKASA, Atsushi FUKUYAMA, Kenichi NAGAOKA 1, Hiroyuki TAKAHASHI 1, Hirohisa

More information

IMPURITY ANALYSIS AND MODELING OF DIII-D RADIATIVE MANTLE DISCHARGES

IMPURITY ANALYSIS AND MODELING OF DIII-D RADIATIVE MANTLE DISCHARGES IMPURITY ANALYSIS AND MODELING OF DIII-D RADIATIVE MANTLE DISCHARGES J. Mandrekas, W.M. Stacey Georgia Institute of Technology M. Murakami, M.R. Wade ORNL G. L. Jackson General Atomics Presented at the

More information

Alcator C-Mod. Particle Transport in the Alcator C-Mod Scrape-off Layer

Alcator C-Mod. Particle Transport in the Alcator C-Mod Scrape-off Layer Alcator C-Mod Particle Transport in the Alcator C-Mod Scrape-off Layer B. LaBombard, R.L. Boivin, B. Carreras, M. Greenwald, J. Hughes, B. Lipschultz, D. Mossessian, C.S. Pitcher, J.L. Terry, S.J. Zweben,

More information

Lower Hybrid RF: Results, Goals and Plans. J.R. Wilson Alcator C-Mod Program Advisory Meeting January 27, 2010

Lower Hybrid RF: Results, Goals and Plans. J.R. Wilson Alcator C-Mod Program Advisory Meeting January 27, 2010 Lower Hybrid RF: Results, Goals and Plans J.R. Wilson Alcator C-Mod Program Advisory Meeting January 27, 2010 ITER Needs and the RENEW Report Provide a Context for LH Research on C-Mod ITER Needs: Hea-ng

More information

Plasma Science and Fusion Center

Plasma Science and Fusion Center Plasma Science and Fusion Center Turbulence and transport studies in ALCATOR C Mod using Phase Contrast Imaging (PCI) Diagnos@cs and Comparison with TRANSP and Nonlinear Global GYRO Miklos Porkolab (in

More information

Overview of Recent Results from Alcator C-Mod including Applications to ITER Scenarios

Overview of Recent Results from Alcator C-Mod including Applications to ITER Scenarios Overview of Recent Results from Alcator C-Mod including Applications to ITER Scenarios E. S. Marmar and the Alcator C-Mod Team MIT Plasma Science and Fusion Center, Cambridge MA 02139 USA E-mail contact

More information

Sensitivity of Tokamak Transport Modeling to Atomic Physics Data: Some Examples

Sensitivity of Tokamak Transport Modeling to Atomic Physics Data: Some Examples Sensitivity of Tokamak Transport Modeling to Atomic Physics Data: Some Examples, S. Baek, J. D. Elder, M. L. Reinke, F. Scotti, J. L. Terry, S. J. Zweben IAEA Technical Meeting on Uncertainty Assessment

More information

Neutral Density Profiles From a Diverted Plasma in Alcator C-Mod. Christopher Paul Barrington-Leigh

Neutral Density Profiles From a Diverted Plasma in Alcator C-Mod. Christopher Paul Barrington-Leigh Neutral Density Profiles From a Diverted Plasma in Alcator C-Mod by Christopher Paul Barrington-Leigh Submitted to the Department of Physics in partial fulfillment of the requirements for the degree of

More information

Radial impurity transport in the H mode transport barrier region in Alcator C-Mod

Radial impurity transport in the H mode transport barrier region in Alcator C-Mod Radial impurity transport in the H mode transport barrier region in Alcator C-Mod T. Sunn Pedersen, R.S. Granetz, A.E. Hubbard, I.H. Hutchinson, E.S. Marmar, J.E. Rice, J. Terry Plasma Science and Fusion

More information

On tokamak plasma rotation without the neutral beam torque

On tokamak plasma rotation without the neutral beam torque On tokamak plasma rotation without the neutral beam torque Antti Salmi (VTT) With contributions from T. Tala (VTT), C. Fenzi (CEA) and O. Asunta (Aalto) 2 Motivation: Toroidal rotation Plasma rotation

More information

Erosion/redeposition analysis of CMOD Molybdenum divertor and NSTX Liquid Lithium Divertor

Erosion/redeposition analysis of CMOD Molybdenum divertor and NSTX Liquid Lithium Divertor Erosion/redeposition analysis of CMOD Molybdenum divertor and NSTX Liquid Lithium Divertor J.N. Brooks, J.P. Allain Purdue University PFC Meeting MIT, July 8-10, 2009 CMOD Mo tile divertor erosion/redeposition

More information

Application of atomic data to quantitative analysis of tungsten spectra on EAST tokamak

Application of atomic data to quantitative analysis of tungsten spectra on EAST tokamak Technical Meeting on Uncertainty Assessment and Benchmark Experiments for Atomic and Molecular Data for Fusion Applications, 19-21 December 2016, Vienna, Austria Application of atomic data to quantitative

More information

Overview of Tokamak Rotation and Momentum Transport Phenomenology and Motivations

Overview of Tokamak Rotation and Momentum Transport Phenomenology and Motivations Overview of Tokamak Rotation and Momentum Transport Phenomenology and Motivations Lecture by: P.H. Diamond Notes by: C.J. Lee March 19, 2014 Abstract Toroidal rotation is a key part of the design of ITER

More information

Light Impurity Transport Studies in Alcator C-Mod*

Light Impurity Transport Studies in Alcator C-Mod* Light Impurity Transport Studies in Alcator C-Mod* I. O. Bespamyatnov, 1 W. L. Rowan, 1 C. L. Fiore, 2 K. W. Gentle, 1 R. S. Granet, 2 and P. E. Phillips 1 1 Fusion Research Center, The University of Texas

More information

Flow measurements in the Scrape-Off Layer of Alcator C-Mod using Impurity Plumes

Flow measurements in the Scrape-Off Layer of Alcator C-Mod using Impurity Plumes Flow measurements in the Scrape-Off Layer of Alcator C-Mod using Impurity Plumes S. Gangadhara,. Laombard M.I.T. Plasma Science and Fusion Center, 175 Albany St., Cambridge, MA 2139 USA Abstract Accurate

More information

On Lithium Wall and Performance of Magnetic Fusion Device

On Lithium Wall and Performance of Magnetic Fusion Device On Lithium Wall and Performance of Magnetic Fusion Device S. I. Krasheninnikov 1, L. E. Zakharov 2, and G. V. Pereverzev 3 1 University California San Diego, La Jolla, USA 2 Princeton Plasma Physics Laboratory,

More information

Comparing Different Scalings of Parallel Heat Flux with Toroidal Magnetic Field [q with BT] M.L. Reinke. February, 2018

Comparing Different Scalings of Parallel Heat Flux with Toroidal Magnetic Field [q with BT] M.L. Reinke. February, 2018 PSFC/RR-18-4 Comparing Different Scalings of Parallel Heat Flux with Toroidal Magnetic Field [q with BT] M.L. Reinke February, 2018 Plasma Science and Fusion Center Massachusetts Institute of Technology

More information

Impurity Transport Studies of Intrinsic MO and Injected Ge in High Temperature ECRH Heated FTU Tokamak Plasmas

Impurity Transport Studies of Intrinsic MO and Injected Ge in High Temperature ECRH Heated FTU Tokamak Plasmas UCRL-JC- 134707 PREPRINT Impurity Transport Studies of Intrinsic MO and Injected Ge in High Temperature ECRH Heated FTU Tokamak Plasmas D. Pacella, M. May KB. Fournier, M. Finkenthal M. Mattioli, M. Zerbini

More information

THE ADVANCED TOKAMAK DIVERTOR

THE ADVANCED TOKAMAK DIVERTOR I Department of Engineering Physics THE ADVANCED TOKAMAK DIVERTOR S.L. Allen and the team 14th PSI QTYUIOP MA D S O N UCLAUCLA UCLA UNIVERSITY OF WISCONSIN THE ADVANCED TOKAMAK DIVERTOR S.L. Allen and

More information

Drift-Driven and Transport-Driven Plasma Flow Components in the Alcator C-Mod Boundary Layer

Drift-Driven and Transport-Driven Plasma Flow Components in the Alcator C-Mod Boundary Layer Drift-Driven and Transport-Driven Plasma Flow Components in the Alcator C-Mod Boundary Layer N. Smick, B. LaBombard MIT Plasma Science and Fusion Center PSI-19 San Diego, CA May 25, 2010 Boundary flows

More information

Variation of Turbulence and Transport with the Te/Ti Ratio in H-Mode Plasmas

Variation of Turbulence and Transport with the Te/Ti Ratio in H-Mode Plasmas Variation of Turbulence and Transport with the Te/Ti Ratio in H-Mode Plasmas by G.R. McKee with C.H. Holland, C.C. Petty, H. Reimerdes,5, T.R. Rhodes6,L. Schmitz6, S. Smith, I.U. Uzun-Kaymak, G. Wang6,

More information

BO Non-Local Heat Transport, Rotation Reversals and Up/Down Impurity Density Asymmetries in Alcator C-Mod Ohmic L-mode Plasmas. J.E.

BO Non-Local Heat Transport, Rotation Reversals and Up/Down Impurity Density Asymmetries in Alcator C-Mod Ohmic L-mode Plasmas. J.E. BO7-5 Non-Local Heat Transport, Rotation Reversals and Up/Down Impurity Density Asymmetries in Alcator C-Mod Ohmic L-mode Plasmas J.E.Rice with thanks to Plasma Science and Fusion Center, MIT M.L.Reinke,

More information

Predicting the Rotation Profile in ITER

Predicting the Rotation Profile in ITER Predicting the Rotation Profile in ITER by C. Chrystal1 in collaboration with B. A. Grierson2, S. R. Haskey2, A. C. Sontag3, M. W. Shafer3, F. M. Poli2, and J. S. degrassie1 1General Atomics 2Princeton

More information

Understanding physics issues of relevance to ITER

Understanding physics issues of relevance to ITER Understanding physics issues of relevance to ITER presented by P. Mantica IFP-CNR, Euratom/ENEA-CNR Association, Milano, Italy on behalf of contributors to the EFDA-JET Work Programme Brief summary of

More information

DIAGNOSTICS FOR ADVANCED TOKAMAK RESEARCH

DIAGNOSTICS FOR ADVANCED TOKAMAK RESEARCH DIAGNOSTICS FOR ADVANCED TOKAMAK RESEARCH by K.H. Burrell Presented at High Temperature Plasma Diagnostics 2 Conference Tucson, Arizona June 19 22, 2 134 /KHB/wj ROLE OF DIAGNOSTICS IN ADVANCED TOKAMAK

More information

Investigation of causes for the discrepancy between the measured and modeled helium emissions using a gas puff imaging diagnostic

Investigation of causes for the discrepancy between the measured and modeled helium emissions using a gas puff imaging diagnostic Investigation of causes for the discrepancy between the measured and modeled helium emissions using a gas puff imaging diagnostic S. Baek, J. Terry, D. P. Stotler*, D. Brunner, B. LaBombard MIT Plasma

More information

C-Mod Core Transport Program. Presented by Martin Greenwald C-Mod PAC Feb. 6-8, 2008 MIT Plasma Science & Fusion Center

C-Mod Core Transport Program. Presented by Martin Greenwald C-Mod PAC Feb. 6-8, 2008 MIT Plasma Science & Fusion Center C-Mod Core Transport Program Presented by Martin Greenwald C-Mod PAC Feb. 6-8, 2008 MIT Plasma Science & Fusion Center Practical Motivations for Transport Research Overall plasma behavior must be robustly

More information

EFFECT OF PLASMA FLOWS ON TURBULENT TRANSPORT AND MHD STABILITY*

EFFECT OF PLASMA FLOWS ON TURBULENT TRANSPORT AND MHD STABILITY* EFFECT OF PLASMA FLOWS ON TURBULENT TRANSPORT AND MHD STABILITY* by K.H. BURRELL Presented at the Transport Task Force Meeting Annapolis, Maryland April 3 6, 22 *Work supported by U.S. Department of Energy

More information

27th IAEA Fusion Energy Conference Ahmedabad, India. October 22 27, 2018

27th IAEA Fusion Energy Conference Ahmedabad, India. October 22 27, 2018 Advances in Runaway Electron Control and Model Validation for ITER by C. Paz-Soldan1 with contributions from: N. Eidietis,1 E. Hollmann,2 A. Lvovskiy,3 C. Cooper,3 J. Herfindal,4 R. Moyer,2 D. Shiraki,4

More information

On the ρ Scaling of Intrinsic Rotation in C-Mod Plasmas with Edge Transport Barriers

On the ρ Scaling of Intrinsic Rotation in C-Mod Plasmas with Edge Transport Barriers On the ρ Scaling of Intrinsic Rotation in C-Mod Plasmas with Edge Transport Barriers J.E. Rice, J.W. Hughes, P.H. Diamond, N. Cao, M.A. Chilenski, A.E. Hubbard, J.H. Irby, Y. Kosuga Y. Lin, I.W. Metcalf,

More information