EFDA European Fusion Development Agreement - Close Support Unit - Garching
|
|
- Ursula Tyler
- 6 years ago
- Views:
Transcription
1 Multi-machine Modelling of Divertor Geometry Effects Alberto Loarte EFDA CSU -Garching Acknowledgements: K. Borrass, D. Coster, J. Gafert, C. Maggi, R. Monk, L. Horton, R.Schneider (IPP), A.Kukushkin (ITER), G. Matthews, M. Groth, (JET), G.Porter (LLNL), N. Asakura (JAERI), D. Stotler (PPPL), B. Lipschultz, B. La Bombard (MIT), R. Pitts (CRPP) - -
2 Outline of the talk. Introduction 2. Divertor Geometry and Detachment (Power Losses + Density Limits) 3. Divertor Geometry and Pumping (Hydrogen + Impurities) 4. Divertor Geometry and Plasma Flows (Hydrogen + Impurities) 5. Conclusions - 2 -
3 . Introduction Divertor Geometry affects Recycling Sources Divertor Density and Temperature Flow Patterns in Divertor Divertor Radiative Losses Power Recicled Particles 2-D Plasma Edge Simulation Codes used to analyse Effects of Divertor Geometry - 3 -
4 Divertor Geometry affects Transport in the Divertor itself DIII-D X-point Scans (D. Hill APS 92) Low X-point High X-point qdiv,out (MW/m2) qparallel,mp (MW/m 2 ) (b) (c) (d) 4.8MW 6.8MW Ptot,div/Pbeam P X-point height (m) - 4 -
5 Can account for ~ 2 Power Flux Reduction near Separatrix ASDEX-U Div I Æ Div II (ASDEX-U, R. Schneider, B2-Eirene, IAEA 98) Divertor energy balance: For each flux bundle Div I Div II Private flux Energy flux into outer divertor Private flux MW Energy flux onto outer divertor Integrals between target plate and divertor entrance Energy losses from neutrals Contribution of the divergence of radial energy fluxes.8.8 Separatrix Separatrix Private Private flux flux.4.4 MW 2 3 Flux bundle label (B2 grid) 2 Flux bundle label (B2 grid) Decrease depends on anomalous Transport (ASDEX-U, D. Coster, B2-Eirene, EPS 98) fetx_max_outer/psep (/m^2) MW transport variation (base: D=, Chi=2).25.5 transport coefficient multiplier - 5-3e9 4e9
6 2. Divertor Geometry and Detachment (Power Losses + Density Limits) Effects of Divertor Geometry on Detachment seen in Alcator C-mod, JET, ASDEX-U, JT-6U, TCV Modelling (B2-Eirene, EDGE2D-NIMBUS & UEDGE) reproduces Features in Experiment Vertical Divertor promotes Detachment close to Separatrix Parallel Current (A/m 2 ) (Alcator C-mod, F. Wising, UEDGE, PSI 96) Parallel Current Attached_Modelled Parallel Current Attached_Exp Parallel Current Detached_Modelled Parallel Current Detached_Exp.5. Radial Distance ρ (m) - 6 -
7 Easier Separatrix Detachment does not lead to Lower Density Limit (Æ total Detachment) (ASDEX-U, R. Schneider, B2-Eirene, PSI 98) distance along outer target plate [m] #862 ASDEX-U Div I & Div II Divertor T e SOL PFR Div I time [sec] Div II # time [sec] ASDEX-U Div I & Div II calculated Ion Flux T_e, div [ev] separatrix particle flux density (2MW) integrated particle flux (2MW) ( m s ) 8 4 Inner DivII Inner DivI Outer DivI Outer DivII separatrix density ( m -3 ) 23 - ( s ).5..5 Outer DivI Inner DivI Outer DivII Inner DivII separatrix density ( m -3 ) - 7 -
8 Most pronounced Geometry Effects seen in JET-Mk IIA Horizontal ÅÆ Vertical Discharges (JET, K. Borrass, B2-Eirene, EPTSW 98) JET-Mk IIA Vertical Modelling Experiment Modelling <n e > I [A/m 2 sat ] () time [s] (7) (9) (8) Separatrix () (9) Plasma Recombination Sink (7) (8) - 8 -
9 Divertor Geometry promotes Recombination away from Separatrix for JET-Mk IIA horizontal Discharges (JET, K. Borrass, B2-Eirene, EPS 97) Corner Effect JET- Mk IIA Horizontal Plasma Recombination Sink JET- Mk IIA Vertical Plasma Recombination Sink - 9 -
10 Detachment characterised by DOD or Degree of Detachment (A. Loarte, Nucl. Fusion 98) High recycling Scaling : scal Id Id DOD... = DOD >> Æ Detachment measured I D.O.D. (Inner) d scal (JET, R. Monk, EPS 97) JET Pulses Nos , Distance from Separatrix cm.6cm 6.cm.9cm Early Onset of Detachment 3754 Divertor MARFE = C n Horizontal e 2 D.O.D. (Inner) Distance from Separatrix cm 2.cm 4.9cm Vertical Divertor MARFE Line Average Density ( 9 m 3 ) - -
11 ASDEX-U Divertor Geometry promotes Recombination for Div II with respect to Div I at lower Densities (ASDEX-U, R. Schneider, B2-Eirene, PSI 98) Photons [s- cm-2 sr-] 3e+8 2e+8 H α emission (standard ohmic shot) Div II Div I e+8 e Deflection [degree] deflection angle -75 divertor II scanning mirror - -
12 Septum in JET-Gas Box isolates in/out Divertor Gas Puffing changes Detachment Asymmetry (JET, C. Maggi, EPS 99) JG99.96/2c Inner divertor Fuelling Outer divertor Fuelling C/SFE/LT Pulse No: 45535, 4495 (MW) ( 22 s - ) ( 22 s - ) ( 9 m -3 ) P IN <n e >, Central Inner fuelling Outer divertor fuelling Inner divertor fuelling I out Outer fuelling I in I out I in TOT P RAD Time (s) JG99.96/5c - 2 -
13 Modelling is consistent with Septum Effect (JET, C. Maggi, EDGE2D-NIMBUS, EPS 99) - 3 -
14 Large Difference in Divertor Power Deposition between Div I and Div II in ASDEX-U power density /MW/m (ASDEX-U, Kaufmann, IAEA 98) 2 MW, DIV II 5 MW, DIV I.5 MW, DIV I.5..5 length across targetplate / m q = 4, MA.5 MW, DIV II..5 Prad,divertor/Pheat + Divertor I + Divertor II...5e2.e2 Line averaged electron density (m-3) Change Div I Æ Div II in Agreement with Modelling (ASDEX-U, R. Schneider, B2-Eirene, PSI 98) Experiment Modelling P_heat =.5 MW NBI, Ý = 5e9 /m**3 2 MW input power, density ramp power density / MW/m 2 power density / MW/m Div I Div II outer divertor..4.8 distance from separatrix / m Div I Div II inner divertor..4.8 distance from separatrix / m power density / MW/m 2 power density / MW/m outer divertor Div I..4.8 distance from separatrix / m Div II inner divertor Div I Div II..4.8 distance from separatrix / m - 4 -
15 -.4 z[m] EFDA ASDEX-U Divertor Geometry creates optimum Conditions for extended Region of Radiation (ASDEX-U, R. Schneider, B2-Eirene, PSI 98) 5 Experiment B2-Eirene Radiation losses [MW/m¾] Bolometer line integral [MW/m 2 ] Private Flux8 2 'yaa' 'yab' Measurements 'yac' 'yae' 'yaf' 'yag' B2-Eirene Distance Separatrix-Bolometer [m] - 5 -
16 Exact Change in Radiation Div I Æ Div II due mainly to access to Low Divertor T e regimes (ASDEX-U, D. Coster, B2-Eirene, EPS 99) Div. sep. Te (ev) Pure Plasma Simulations DivI 2MW outer Outer target DivII 2MW outer DivI 8MW outer DivII 8MW outer.. 2e+9 4e+9 6e+9 8e+9 e+2 midplane separatrix density Div. sep. Te (ev) DivI 2MW inner Inner target DivII 2MW inner DivI 8MW inner DivII 8MW inner.. 2e+9 4e+9 6e+9 8e+9 e+2 midplane separatrix density - 6 -
17 Radiation Fraction in ASDEX-U Div II (ASDEX-U, D. Coster, B2-Eirene, EPS 99) Fraction of power reaching target %.2 3% 5%. Target temperature T=eV T=3eV.8 T=5eV C chemical sputter yield - 7 -
18 Carbon Flow Pattern induced by Geometry increases Radiation Efficiency (ASDEX-U, R. Schneider, B2-Eirene, IAEA 98) Carbon mass flow: flow reversal close to separatrix forward flow in the outer SOL - 8 -
19 3. Divertor Geometry and Pumping (Hydrogen + Impurities) DIII-D Experiments Æ Strong Dependence of Hydrogen Pumping on Divertor Geometry (DIII-D, R. Maingi, PSI 94) Normalised Neutral Pump Experiment Horizontal Target Bias Ring Distance from separatrix to Bias Ring (cm) - 9 -
20 Strong dependence not seen in other Experiments (JET-Mk I, JET-Mk IIA, C-mod, ASDEX-U) - 2 -
21 Physics Basis for Difference found with 2-D Codes (Ballistic Flux ÅÆ Diffusive Flux) (A. Loarte, EPS 97).8 Separatrix SOL Distance separatrix slot x Pumping baffle Geometrical Probability PGeo Slot width =.5 λ ion Slot width =. λ ion Slot width = 2. λ ion Slot width = 4. λ ion Private flux region Slot width Pumping slot JG.42/3c Distance to pumping slot (normalised to λ ion ) JG.42/4c Mod (DIII-D, R. Maingi, Nucl. Fusion 99) Variable Ion Current Model Fixed Ion Current Model Plenum Pressure (mtorr) Outer Strike Point Location - 2 -
22 Diffusive Flux leads to weak Strike Point Position Pumping Dependence (A. Loarte, EDGE2D-NIMBUS, EPS 97) Normalised Neutral Pump Bias Ring DIII-D_Press+EDGE2D Horizontal Target Experiment_Low_ne Experiment_High_ne EDGE2D-NIMBUS Distance from Separatrix to Bias Ring (cm). JET MkII Z (m) R (m) JG97.23/2c
23 He, Ne do not Charge-Exchange so Pumping Subject to stronger Effects of Divertor Geometry (ASDEX-U, D. Coster, B2-Eirene, PSI 96) additional pumping baffle pump Distance along Target (m) In ASDEX-U Div I Ne is more compressed than He Compression factor C i. Experiments Ne Helium B2-Eirene modelling Ne He Neutral gas flux density [m -2s -]
24 Change from Div I to Div II expected from ballistic Transport of He and Ne to the Pump (ASDEX-U, R. Schneider, B2-Eirene, IAEA 98) Neon Helium Improved helium exhaust, worse compression of neon (ASDEX-U, H. - S. Bosch, B2-Eirene, He Workshop 99) Deuterium Compression He & Ne Pumping
25 Ballistic Effects for He also seen in JET Mk II He enrichment (JET MK II, M. Groth, He Workshop 99) L-mode Horizontal Corner Vertical Vertical H-mode Horizontal Vertical Vertical Subdivertor pressure ( 3 mbar) Enrichment decreases with increasing n e + Detachment (JET Mk II Gas Box, H. Guo, EDGE2D-NIMBUS, Nucl. Fusion 2) Edge Enrichment Enrichment Enrichment L-mode : He Ne H-mode : He Ne Ar Core Subdivertor Pressure ( -3 mbar) Ne He Edge Code Separatrix density ( -9-3 m ) JG99.438/7c
26 For ITER He enrichment increase with Detachment Helium Concentration Separatrix De-enrichment due to Thermal Forces Going to Partial Detachment helps He Pumping (Increased Neutral He Penetration to PFR)
27 Detachment helps for He Pumping in ITER-FEAT Helium Plasma Edge. n_he_core_scaled_full_pumping Detachment Outer Divertor Detachment Inner Divertor Separatrix Density ( 9 m -3 ) Detachment increases D Pressure & He Enrichment P_PFR_Deuterium_Full_Pumping RC/RTO-ITER He-Enrichment Deuterium Neutral Pressure (Pa) Detachment Inner Divertor Detachment Outer Divertor Helium Plasma Edge Separatrix Density ( 9 m -3 )
28 Experiments + Modelling for DIII-D show different D and He Behaviour (DIII-D, A. Loarte, B2-Eirene, PET99) For D standard Detachment Picture Electron Temperature Electron Density Strong Recombination but Neutrals don't reach Main Plasma Ionisation/Recombination Neutral Density
29 For He Main Bulk Plasma collapses before Recombination can be achieved (He penetration through X-point) Electron Temperature Helium Atomic Density Ionisation/Recombination Momentum Losses
30 4. Divertor Geometry and Plasma Flows (Hydrogen + Impurities) Divertor Particle Flows are determined by Sources (Divertor Geometry) but also by Drifts High Density Operation can lead to Flow Reversal in the Divertor Vertical Divertors are more prone to Flow Reversal due to Recycling Pattern (Alcator C-mod, A. Loarte, B2-Eirene, PSI 98) - 3 -
31 Momentum Transport across the SOL between normal and reversed Flow Regions leads to Separatrix overpressure at Divertor "Death Ray" in Alcator C-mod (A. Loarte, EDGE2D-NIMBUS, PSI 96, Stotler, B2-Eirene, PSI 98) Total Pressure (Pa) 3 2 Upstream Divertor Total Pressure (Pa) "Death Ray" Upstream Divertor ρ(mm) ρ(mm) p tot (Pa) DR No DR Momentum Sources (N) DR S No DR S p p S n S n ρ (mm) - 3 -
32 Flow reversal occurs also in Horizontal Divertors (DIII-D, J. Boedo, G. Porter, UEDGE, APS 99).5.5. Private Region SOL Core..5.5 Mach. Mach Z(cm) Z(cm) 942, Attached 75 Outer (fl8-nog) Leg -.6 Z [m] R [m]
33 Flow reversal disappears at Detachment in Horizontal Divertors (DIII-D, J. Boedo, G. Porter, UEDGE, APS 99) Private Region SOL Core SOL 2 Vflow(cm/s) Vflow(cm/s) Z(cm) Z(cm)
34 Impurity Flow Reversal can occur without Deuterium Flow reversal Thermal Force wins over Friction (DIII-D, G. Porter, UEDGE, APS 98) Mach number R (m) Z [m] 3 experiment UEDGE Z [m] R [m] - Mach number CII flow, attached 4 4 Attached phase -.6 u (C ) [m/s] Experiment UEDGE Z [m] R [m] e+5.e+ 2.e+5 Parallel velocity [m/s]
35 In ASDEX-U Div II Impurity Flow Reversal Detachment in Agreement with Predictions (ASDEX-U, J. Gafert, D. Coster, R. Schneider, B2-Eirene, PSI 98) CIII-emissivity photons [ m 3 sr s ] Parallel velocity v (km/s) Measured PU4 Modelled PU4 z (m) -. POU POU2 POU3 POU4 -. POU POU2 POU3 POU Km/s + 5 Km/s - 24 Km/s -7 Km/s C 2+ C R (m) Carbon mass flow: flow reversal close to separatrix forward flow in the outer SOL
36 sat / Xp Xp Detachment after ionisation Front in Divertor M (ASDEX-U,D. Coster, B2-Eirene, EPTSW 98) Plasma particle source ( m -3 s -) Mach number e24 e23 e22 e2 -e2-e22 ionization recombination Well documented in JT-6U (JT-6U, N. Asakura, Nucl. Fusion 99) (A m -2 ) 6 5 ne = 3.2x 9 m -3 Xp MARFE large radiation loss j Xp sat (up) 4 ne = 2.6x 9 m -3 ne =.8x 9 m -3 Xp MARFE Attached Detached (down) j sat (up) T e (ev) 2 Detached Mach ~ j Xp flow towards target Distance from separatrix (mm) Large Mach
37 5. Conclusions Predicted Effects of Divertor Geometry on Detachment seen in most Experiments Strong Dependence of Separatrix Detachment on Geometry but weak Geometry Effect on L-mode Density Limit ( Total Detachment ) Divertor Geometry can enhance Radiation Losses for Carbon (ASDEX-U Div I Æ Div II) Divertor Geometry Effect on Hydrogen and Impurity Pumping understood in Terms of ballistic and diffusive Fluxes to pumping Plenum Divertor Geometry Effect on Hydrogen and Impurity Flows from 2-D Codes seen in Experiment: Hydrogen and Impurity Flow Reversal and Momentum Transport ("Death Rays") Modelling with Drifts needed for better understanding Divertor Geometry Effect on Midplane n e Profiles unclear ÅÆ SOL Flows+Main Chamber Recycling
Review of experimental observations of plasma detachment and of the effects of divertor geometry on divertor performance
Review of experimental observations of plasma detachment and of the effects of divertor geometry on divertor performance Alberto Loarte European Fusion Development Agreement Close Support Unit - Garching
More informationDriving Mechanism of SOL Plasma Flow and Effects on the Divertor Performance in JT-60U
EX/D-3 Driving Mechanism of SOL Plasma Flow and Effects on the Divertor Performance in JT-6U N. Asakura ), H. Takenaga ), S. Sakurai ), G.D. Porter ), T.D. Rognlien ), M.E. Rensink ), O. Naito ), K. Shimizu
More informationExperimental results and modelling of ASDEX Upgrade partial detachment
Experimental results and modelling of ASDEX Upgrade partial detachment M. Wischmeier 1 With thanks to X. Bonnin 2, P. Börner 3, A. Chankin 1, D. P. Coster 1, M. Groth 4, A. Kallenbach 1, V. Kotov 3, H.
More informationEdge Plasma Energy and Particle Fluxes in Divertor Tokamaks
Edge Plasma Energy and Particle Fluxes in Divertor Tokamaks Alberto Loarte European Fusion Development Agreement Close Support Unit - Garching Alberto Loarte New Trends in Plasma Physics II Max-Planck-Institut
More informationModelling of JT-60U Detached Divertor Plasma using SONIC code
J. Plasma Fusion Res. SERIES, Vol. 9 (2010) Modelling of JT-60U Detached Divertor Plasma using SONIC code Kazuo HOSHINO, Katsuhiro SHIMIZU, Tomonori TAKIZUKA, Nobuyuki ASAKURA and Tomohide NAKANO Japan
More informationDivertor Requirements and Performance in ITER
Divertor Requirements and Performance in ITER M. Sugihara ITER International Team 1 th International Toki Conference Dec. 11-14, 001 Contents Overview of requirement and prediction for divertor performance
More informationARTICLES PLASMA DETACHMENT IN JET MARK I DIVERTOR EXPERIMENTS
ARTICLES PLASMA DETACHMENT IN JET MARK I DIVERTOR EXPERIMENTS A. LOARTE, R.D. MONK, J.R. MARTÍN-SOLÍSa,D.J.CAMPBELL, A.V. CHANKIN b, S. CLEMENT, S.J. DAVIES, J. EHRENBERG, S.K. ERENTS c,h.y.guo, P.J. HARBOUR,
More informationPhysics of the detached radiative divertor regime in DIII-D
Plasma Phys. Control. Fusion 41 (1999) A345 A355. Printed in the UK PII: S741-3335(99)97299-8 Physics of the detached radiative divertor regime in DIII-D M E Fenstermacher, J Boedo, R C Isler, A W Leonard,
More informationScaling of divertor heat flux profile widths in DIII-D
1 Scaling of divertor heat flux profile widths in DIII-D C.J. Lasnier 1, M.A. Makowski 1, J.A. Boedo 2, N.H. Brooks 3, D.N. Hill 1, A.W. Leonard 3, and J.G. Watkins 4 e-mail:lasnier@llnl.gov 1 Lawrence
More informationCross-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 informationMulti-machine comparisons of divertor heat flux mitigation by radiative cooling with nitrogen
1 ITR/P1-28 Multi-machine comparisons of divertor heat flux mitigation by radiative cooling with nitrogen A. Kallenbach 1, M. Bernert 1, R. Dux 1, T. Eich 1, C. Giroud 2, A. Herrmann 1, J.W. Hughes 3,
More informationResults From Initial Snowflake Divertor Physics Studies on DIII-D
Results From Initial Snowflake Divertor Physics Studies on DIII-D S. L. Allen, V. A. Soukhanovskii, T.H. Osborne, E. Kolemen, J. Boedo, N. Brooks, M. Fenstermacher, R. Groebner, D. N. Hill, A. Hyatt, C.
More informationScaling of divertor heat flux profile widths in DIII-D
LLNL-PROC-432803 Scaling of divertor heat flux profile widths in DIII-D C. J. Lasnier, M. A Makowski, J. A. Boedo, S. L. Allen, N. H. Brooks, D. N. Hill, A. W. Leonard, J. G. Watkins, W. P. West May 20,
More informationScaling of divertor plasma effectiveness for reducing target-plate heat flux
Scaling of divertor plasma effectiveness for reducing target-plate heat flux T.D. Rognlien, I. Joseph, G.D. Porter, M.E. Rensink, M.V. Umansky, LLNL S.I. Krasheninnikov & A.Yu. Pigarov, UCSD; M. Groth,
More informationCross-Field Transport in the SOL: Its Relationship to Main Chamber and Divertor Neutral Control in Alcator C-Mod
Cross-Field Transport in the SOL: Its Relationship to Main Chamber and Divertor Neutral Control in Alcator C-Mod B. LaBombard, B. Lipschultz, J.A. Goetz, C.S. Pitcher, N. Asakura 1), R.L. Boivin, J.W.
More informationDevelopment of an experimental profile database for the scrape-off layer
Development of an experimental profile database for the scrape-off layer M. Groth, 1 G.D. Porter, 1 W.M. Meyer, 1 A.W. Leonard, 2 T.H. Osborne, 2 D.P. Coster, 3 A. Kallenbach, 3 M. Wischmeier 3 N.H. Brooks,
More informationModelling radiative power exhaust in view of DEMO relevant scenarios
Modelling radiative power exhaust in view of DEMO relevant scenarios 2 nd IAEA Technical Meeting November 14th 2017 S. Wiesen, M. Wischmeier, M. Bernert, M. Groth, A. Kallenbach, R. Wenninger, S. Brezinsek,
More informationITER. Power and Particle Exhaust in ITER ITER
Power and Particle Exhaust in ITER ITER G. Janeschitz, C. Ibbott, Y. Igitkhanov, A. Kukushkin, H. Pacher, G. Pacher, R. Tivey, M. Sugihara, JCT and HTs San Diego.5.2 Power and Particle Exhaust in ITER
More informationITER Divertor Plasma Modelling with Consistent Core-Edge Parameters
CT/P-7 ITER Divertor Plasma Modelling with Consistent Core-Edge Parameters A. S. Kukushkin ), H. D. Pacher ), G. W. Pacher 3), G. Janeschitz ), D. Coster 5), A. Loarte 6), D. Reiter 7) ) ITER IT, Boltzmannstr.,
More informationDivertor Heat Flux Reduction and Detachment in NSTX
1 EX/P4-28 Divertor Heat Flux Reduction and Detachment in NSTX V. A. Soukhanovskii 1), R. Maingi 2), R. Raman 3), R. E. Bell 4), C. Bush 2), R. Kaita 4), H. W. Kugel 4), C. J. Lasnier 1), B. P. LeBlanc
More informationImpact of Carbon and Tungsten as Divertor Materials on the Scrape-off Layer Conditions in JET
1 TH/3-1 Impact of Carbon and Tungsten as Divertor Materials on the Scrape-off Layer Conditions in JET M. Groth 1, S. Brezinsek 2, P. Belo 3, M.N.A. Beurskens 4, M. Brix 4, M. Clever 2, J.W. Coenen 2,
More informationDrift-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 informationExhaust 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 informationTHE 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 informationSimulation of ASDEX Upgrade Ohmic Plasmas for SOLPS Code Validation
Simulation of ASDEX Upgrade Ohmic Plasmas for SOLPS Code Validation A.V.Chankin, D.P.Coster, R.Dux, Ch.Fuchs, G.Haas, A.Herrmann, L.D.Horton, A.Kallenbach, B.Kurzan, H.W.Müller, R.Pugno, M.Wischmeier,
More informationDivertor Detachment on TCV
Divertor Detachment on TCV R. A. Pitts, Association EURATOM-Confédération Suisse,, CH- LAUSANNE, Switzerland thanks to A. Loarte a, B. P. Duval, J.-M. Moret, J. A. Boedo b, L. Chousal b, D. Coster c, G.
More informationIMPLICATIONS OF WALL RECYCLING AND CARBON SOURCE LOCATIONS ON CORE PLASMA FUELING AND IMPURITY CONTENT IN DIII-D
20 th IAEA Fusion Energy Conference Vilamoura, Portugal, 1 to 6 November 2004 IAEA-CN-116/EX/P5-19 IMPLICATIONS OF WALL RECYCLING AND CARBON SOURCE LOCATIONS ON CORE PLASMA FUELING AND IMPURITY CONTENT
More informationAlcator 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 informationVolume Recombination and Detachment in JET Divertor Plasmas
JET CP(98)1 Volume Recombination and Detachment in JET Divertor Plasmas G M McCracken, R D Monk, A Meigs, L Horton, L C Ingesson, J Lingertat, G F Matthews, M G O Mullane, R Prentice, M F Stamp, P C Stangeby
More information3D analysis of impurity transport and radiation for ITER limiter start-up configurations
3D analysis of impurity transport and radiation for ITER limiter start-up configurations P2-74 X. Zha a*, F. Sardei a, Y. Feng a, M. Kobayashi b, A. Loarte c, G. Federici c a Max-Planck-Institut für Plasmaphysik,
More informationSTEADY-STATE EXHAUST OF HELIUM ASH IN THE W-SHAPED DIVERTOR OF JT-60U
Abstract STEADY-STATE EXHAUST OF HELIUM ASH IN THE W-SHAPED DIVERTOR OF JT-6U A. SAKASAI, H. TAKENAGA, N. HOSOGANE, H. KUBO, S. SAKURAI, N. AKINO, T. FUJITA, S. HIGASHIJIMA, H. TAMAI, N. ASAKURA, K. ITAMI,
More informationL-mode radiative plasma edge studies for model validation in ASDEX Upgrade and JET
L-mode radiative plasma edge studies for model validation in ASDEX Upgrade and JET P1-3 L. Aho-Mantila a *, M. Bernert b, J.W. Coenen c, R. Fischer b, M. Lehnen c, C. Lowry d, S. Marsen e, K. McCormick
More informationGA A26119 MEASUREMENTS AND SIMULATIONS OF SCRAPE-OFF LAYER FLOWS IN THE DIII-D TOKAMAK
GA A26119 MEASUREMENTS AND SIMULATIONS OF SCRAPE-OFF LAYER FLOWS IN THE DIII-D TOKAMAK by M. GROTH, G.D. PORTER, J.A. BOEDO, N.H. BROOKS, R.C. ISLER, W.P. WEST, B.D. BRAY, M.E. FENSTERMACHER, R.J. GROEBNER,
More informationUEDGE Modeling of the Effect of Changes in the Private Flux Wall in DIII-D on Divertor Performance
UEDGE Modeling of the Effect of Changes in the Private Flux Wall in DIII-D on Divertor Performance N.S. Wolf, G.D. Porter, M.E. Rensink, T.D. Rognlien Lawrence Livermore National Lab, And the DIII-D team
More informationFlow Measurements in the Divertor Region of DIII-D and Plasma Characterization using a Reciprocating Probe
Flow Measurements in the DIII-D Divertor Flow Measurements in the Divertor Region of DIII-D and Plasma Characterization using a Reciprocating Probe J. Boedo, R. Lehmer, R. Moyer, J. Watkins, D. Hill, T.
More informationPower Deposition Measurements in Deuterium and Helium Discharges in JET MKIIGB Divertor by IR-Thermography
EFDA JET CP(02)01/03 T Eich, A Herrmann, P Andrew and A Loarte Power Deposition Measurements in Deuterium and Helium Discharges in JET MKIIGB Divertor by IR-Thermography . Power Deposition Measurements
More informationII: The role of hydrogen chemistry in present experiments and in ITER edge plasmas. D. Reiter
II: The role of hydrogen chemistry in present experiments and in ITER edge plasmas D. Reiter Institut für Plasmaphysik, FZ-Jülich, Trilateral Euregio Cluster Atomic and Molecular Data for Fusion Energy
More informationFusion Nuclear Science Facility (FNSF) Divertor Plans and Research Options
Fusion Nuclear Science Facility (FNSF) Divertor Plans and Research Options A.M. Garofalo, T. Petrie, J. Smith, V. Chan, R. Stambaugh (General Atomics) J. Canik, A. Sontag, M. Cole (Oak Ridge National Laboratory)
More informationPhysics basis for similarity experiments on power exhaust between JET and ASDEX Upgrade with tungsten divertors
Physics basis for similarity experiments on power exhaust between JET and ASDEX Upgrade with tungsten divertors S. Wiesen, T. Eich, M. Bernert, S. Brezinsek, C. Giroud, E. Joffrin, A. Kallenbach, C. Lowry,
More informationDIVIMP simulation of W transport in the SOL of JET H-mode plasmas
DIVIMP simulation of W transport in the SOL of JET H-mode plasmas A. Järvinen a, C. Giroud b, M. Groth a, K. Krieger c, D. Moulton d, S. Wiesen e, S. Brezinsek e and JET- EFDA contributors¹ JET-EFDA, Culham
More informationPartial detachment of high power discharges in ASDEX Upgrade
Partial detachment of high power discharges in ASDEX Upgrade A. Kallenbach 1, M. Bernert 1, M. Beurskens, L. Casali 1, M. Dunne 1, T. Eich 1, L. Giannone 1, A. Herrmann 1, M. Maraschek 1, S. Potzel 1,
More informationL-Mode and Inter-ELM Divertor Particle and Heat Flux Width Scaling on MAST
CCFE-PR(13)33 J. R. Harrison, G. M. Fishpool and A. Kirk L-Mode and Inter-ELM Divertor Particle and Heat Flux Width Scaling on MAST Enquiries about copyright and reproduction should in the first instance
More informationDetached Divertor Operation in DIII-D Helium Plasmas
UCRL-JC-130766 Preprint Detached Divertor Operation in DIII-D Helium Plasmas D.N. Hill, M.E. Fenstermacher, C.J. Lasnier, A.W. Leonard, M.R. Wade, W.P. West, and R.D. Wood This paper was prepared for submittal
More informationAlcator 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 information1. Motivation power exhaust in JT-60SA tokamak. 2. Tool COREDIV code. 3. Operational scenarios of JT-60SA. 4. Results. 5.
1. Motivation power exhaust in JT-60SA tokamak 2. Tool COREDIV code 3. Operational scenarios of JT-60SA 4. Results 5. Conclusions K. Gałązka Efficient power exhaust in JT-60SA by COREDIV Page 2 The Institute
More informationPower 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 informationSimulation of Plasma Flow in the DIII-D Tokamak
UCRL-JC-129497 Preprint Simulation of Plasma Flow in the DIII-D Tokamak G.D Porter, T D. Rognlien, N. Wolf, J Boedo, R.C Isler This paper was prepared for submittal to 1998 International Congress on Plasma
More informationFusion Development Facility (FDF) Divertor Plans and Research Options
Fusion Development Facility (FDF) Divertor Plans and Research Options A.M. Garofalo, T. Petrie, J. Smith, M. Wade, V. Chan, R. Stambaugh (General Atomics) J. Canik (Oak Ridge National Laboratory) P. Stangeby
More informationPredicting 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 informationHydrogen and Helium Edge-Plasmas
Hydrogen and Helium Edge-Plasmas Comparison of high and low recycling T.D. Rognlien and M.E. Rensink Lawrence Livermore National Lab Presented at the ALPS/APEX Meeting Argonne National Lab May 8-12, 2
More informationH-mode performance and pedestal studies with enhanced particle control on Alcator C-Mod
H-mode performance and pedestal studies with enhanced particle control on Alcator C-Mod J.W. Hughes, B. LaBombard, M. Greenwald, A. Hubbard, B. Lipschultz, K. Marr, R. McDermott, M. Reinke, J.L. Terry
More informationITER A/M/PMI Data Requirements and Management Strategy
ITER A/M/PMI Data Requirements and Management Strategy Steven Lisgo, R. Barnsley, D. Campbell, A. Kukushkin, M. Hosokawa, R. A. Pitts, M. Shimada, J. Snipes, A. Winter ITER Organisation with contributions
More informationProgress in the ITER Physics Basis
Progress in the ITER Physics Basis Chapter 4. Power and Particle Control ITPA Scrape-off Layer and Divertor Physics Topical Group A. Loarte (EFDA-CSU Garching), B. Lipschultz (MIT-PSFC), A.S. Kukushkin
More informationImpurity accumulation in the main plasma and radiation processes in the divetor plasma of JT-60U
1 EX/P4-25 Impurity accumulation in the main plasma and radiation processes in the divetor plasma of JT-6U T. Nakano, H. Kubo, N. Asakura, K. Shimizu and S. Higashijima Japan Atomic Energy Agency, Naka,
More informationDetachment Dynamics on the TCV Tokamak
CCFE-PR(16)16 J.R. Harrison, W.A.J. Vijvers, C. Theiler, B.P. Duval, S. Elmore, B. Labit, B. Lipschultz, S.H.M. van Limpt, S.W. Lisgo, C.K. Tsui, H. Reimerdes, U. Sheikh, K.H.A. Verhaegh, M. Wischmeier
More informationTokamak Divertor System Concept and the Design for ITER. Chris Stoafer April 14, 2011
Tokamak Divertor System Concept and the Design for ITER Chris Stoafer April 14, 2011 Presentation Overview Divertor concept and purpose Divertor physics General design considerations Overview of ITER divertor
More informationRADIATIVE DIVERTOR AND SOL EXPERIMENTS IN OPEN AND BAFFLED DIVERTORS ON DIIIÐD *
RADIATIVE DIVERTOR AND SOL EXPERIMENTS IN OPEN AND BAFFLED DIVERTORS ON DIIIÐD * S.L. ALLEN, N.H. BROOKS, R. BASTASZ, à J. BOEDO, Æ J.N. BROOKS, J.W. CUTHBERTSON, Æ T.E. EVANS, M.E. FENSTERMACHER, D.N.
More informationImpurity-seeded ELMy H-modes in JET, with high density and reduced heat load
INSTITUTE OF PHYSICS PUBLISHING and INTERNATIONAL ATOMIC ENERGY AGENCY NUCLEAR FUSION Nucl. Fusion 5 (5) 1 11 doi:1.188/9-5515/5/11/ Impurity-seeded ELMy H-modes in JET, with high density and reduced heat
More informationFlow 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 informationDivertor physics research on Alcator C-Mod. B. Lipschultz, B. LaBombard, J.L. Terry, C. Boswell, I.H. Hutchinson
PSFC/JA-05-38 Divertor physics research on Alcator C-Mod B. Lipschultz, B. LaBombard, J.L. Terry, C. Boswell, I.H. Hutchinson Plasma Science and Fusion Center Massachusetts Institute of Technology Cambridge
More informationIntegrated Core-SOL-Divertor Modelling for ITER Including Impurity: Effect of Tungsten on Fusion Performance in H-mode and Hybrid Scenario
1 TH/P3-45 Integrated Core-SOL-Divertor Modelling for ITER Including Impurity: Effect of Tungsten on Fusion Performance in H-mode and Hybrid Scenario R. Zagórski 1, I.Voitsekhovitch 2, I. Ivanova-Stanik
More informationPower Balance and Scaling of the Radiated Power in the Divertor and Main Plasma of Alcator C-Mod
PFC/JA-94-15 Power Balance and Scaling of the Radiated Power in the Divertor and Main Plasma of Alcator C-Mod J.A. Goetz, B. Lipschultz, M.A. Graf, C. Kurz, R. Nachtrieb, J.A. Snipes, J.L. Terry Plasma
More informationCross-field plasma transport and main chamber recycling in diverted plasmas on Alcator C-Mod. Abstract
Cross-field plasma transport and main chamber recycling in diverted plasmas on Alcator C-Mod B. LaBombard *, M.V. Umansky, R.L. Boivin, J.A. Goetz, J. Hughes, B. Lipschultz, D. Mossessian, C.S. Pitcher,
More informationONION-SKIN METHOD (OSM) ANALYSIS OF DIII D EDGE MEASUREMENTS
GA A2342 ONION-SKIN METHOD (OSM) ANALYSIS OF DIII D EDGE MEASUREMENTS by P.C. STANGEBY, J.G. WATKINS, G.D. PORTER, J.D. ELDER, S. LISGO, D. REITER, W.P. WEST, and D.G. WHYTE JULY 2 DISCLAIMER This report
More informationCalculations of Energy Losses due to Atomic Processes in Tokamaks with Applications to the ITER Divertor
Calculations of Energy Losses due to Atomic Processes in Tokamaks with Applications to the ITER Divertor D. Post 1, J. Abdallah, R. E. H. Clark, and N. Putvinskaya 1 1 ITER Joint Central Team, San Diego,
More informationEffect of ExB Driven Transport on the Deposition of Carbon in the Outer Divertor of. ASDEX Upgrade
Association Euratom-Tekes ASDEX Upgrade Effect of ExB Driven Transport on the Deposition of Carbon in the Outer Divertor of ASDEX Upgrade L. Aho-Mantila 1,2, M. Wischmeier 3, K. Krieger 3, V. Rohde 3,
More informationPlasma-neutrals transport modeling of the ORNL plasma-materials test stand target cell
Plasma-neutrals transport modeling of the ORNL plasma-materials test stand target cell J.M. Canik, L.W. Owen, Y.K.M. Peng, J. Rapp, R.H. Goulding Oak Ridge National Laboratory ORNL is developing a helicon-based
More informationImproved EDGE2D-EIRENE Simulations of JET ITER-like Wall L-mode Discharges Utilising Poloidal VUV/visible Spectral Emission Profiles
CCFE-PR(15)26 K.D. Lawson, M. Groth, P. Belo, S. Brezinsek, G. Corrigan, A. Czarnecka, E. Delabie, P. Drewelow, D. Harting, I. KsiąŜek, C.F. Maggi, C. Marchetto, A.G. Meigs, S. Menmuir, M.F. Stamp, S.
More informationEXD/P3-13. Dependences of the divertor and midplane heat flux widths in NSTX
1 Dependences of the ertor and plane heat flux widths in NSTX T.K. Gray1,2), R. Maingi 2), A.G. McLean 2), V.A. Soukhanovskii 3) and J-W. Ahn 2) 1) Oak Ridge Institute for Science and Education (ORISE),
More informationPSI meeting, Aachen Germany, May 2012
Constraining the divertor heat width in ITER D.G. Whyte 1, B. LaBombard 1, J.W. Hughes 1, B. Lipschultz 1, J. Terry 1, D. Brunner 1, P.C. Stangeby 2, D. Elder 2, A.W. Leonard 3, J. Watkins 4 1 MIT Plasma
More informationErosion and Confinement of Tungsten in ASDEX Upgrade
ASDEX Upgrade Max-Planck-Institut für Plasmaphysik Erosion and Confinement of Tungsten in ASDEX Upgrade R. Dux, T.Pütterich, A. Janzer, and ASDEX Upgrade Team 3rd IAEA-FEC-Conference, 4.., Daejeon, Rep.
More informationDivertor power and particle fluxes between and during type-i ELMs in ASDEX Upgrade
Divertor power and particle fluxes between and during type-i ELMs in ASDEX Upgrade A. Kallenbach, R. Dux, T. Eich, R. Fischer, L. Giannone, J. Harhausen, A. Herrmann, H.W. Müller, G. Pautasso, M. Wischmeier,
More informationTotal Flow Vector in the C-Mod SOL
Total Flow Vector in the SOL N. Smick, B. LaBombard MIT Plasma Science and Fusion Center APS-DPP Annual Meeting Atlanta, GA November 3, 2009 Motivation and Goals Measurements have revealed high parallel
More informationErosion and Confinement of Tungsten in ASDEX Upgrade
IAEA-CN-8/EXD/6- Erosion and Confinement of Tungsten in ASDEX Upgrade R. Dux, A. Janzer, T. Pütterich, and ASDEX Upgrade Team Max-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching
More informationOVERVIEW 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 informationOverview of edge modeling efforts for advanced divertor configurations in NSTX-U with magnetic perturbation fields
Overview of edge modeling efforts for advanced divertor configurations in NSTX-U with magnetic perturbation fields H. Frerichs, O. Schmitz, I. Waters, G. P. Canal, T. E. Evans, Y. Feng and V. Soukhanovskii
More informationNeutral gas modelling
Neutral gas modelling Ben Dudson 1 1 York Plasma Institute, Department of Physics, University of York, Heslington, York YO10 5DD, UK BOUT++ Workshop 16 th September 2014 Ben Dudson, University of York
More informationPhysics and Engineering Studies of the Advanced Divertor for a Fusion Reactor
1 FIP/3-4Ra Physics and Engineering Studies of the Advanced Divertor for a Fusion Reactor N. Asakura 1, K. Hoshino 1, H. Utoh 1, K. Shinya 2, K. Shimizu 3, S. Tokunaga 1, Y.Someya 1, K. Tobita 1, N. Ohno
More informationSome Notes on the Window Frame Method for Assessing the Magnitude and Nature of Plasma-Wall Contact
Some Notes on the Window Frame Method for Assessing the Magnitude and Nature of Plasma-Wall Contact Peter Stangeby 4 September 2003 1. Fig. 1 shows an example of a suitable magnetic configuration for application
More information1 EX/P6-5 Analysis of Pedestal Characteristics in JT-60U H-mode Plasmas Based on Monte-Carlo Neutral Transport Simulation
1 Analysis of Pedestal Characteristics in JT-60U H-mode Plasmas Based on Monte-Carlo Neutral Transport Simulation Y. Nakashima1), Y. Higashizono1), H. Kawano1), H. Takenaga2), N. Asakura2), N. Oyama2),
More informationSteady State and Transient Power Handling in JET
Steady State and Transient Power Handling in JET G.F.Matthews * on behalf of the JET EFDA Exhaust Physics Task Force and JET EFDA Contributors + + See annex of J. Pamela et al, "Overview of JET Results",
More informationComparing Scrape-Off-Layer and Divertor Physics in JET Pure He and D Discharges
EFDA JET CP()1/13 R.A. Pitts, P. Andrew, Y. Andrew, M. Becoulet, I. Coffey, D. Coster, D.C. McDonald, T. Eich, S.K. Erents, M. E. Fenstermacher, W. Fundamenski, G. Haas, A. Hermann, C. Hidalgo, D. Hillis,
More informationEffect of Variation in Equilibrium Shape on ELMing H Mode Performance in DIII D Diverted Plasmas
Effect of Variation in Equilibrium Shape on ELMing H Mode Performance in DIII D Diverted Plasmas M.E. Fenstermacher, T.H. Osborne, T.W. Petrie, C.J. Lasnier, A.W. Leonard, J.G. Watkins, 3 T.N. Carlstrom,
More informationDensity Limit and Cross-Field Edge Transport Scaling in Alcator C-Mod
EX/D- Density Limit and Cross-Field Edge Transport Scaling in Alcator C-Mod B. LaBombard ), M. Greenwald ), R.L. Boivin ), B..A. Carreras 3), J.W. Hughes ), B. Lipschultz ), D. Mossessian ), C.S. Pitcher
More informationSensitivity of Detachment Extent to Magnetic Configuration and External Parameters. September 2015
PSFC/JA-15-64 Sensitivity of Detachment Extent to Magnetic Configuration and External Parameters Bruce Lipschultz 1, Felix I. Parra 2, 3 and Ian H. Hutchinson 4 1 York Plasma Institute, University of York,
More informationLong Term Reduction of Divertor Carbon Sources in DIII-D
Long Term Reduction of Divertor Carbon Sources in DIII-D D.G Whyte, UCSD R. Doerner, W.P. West, R.L. Lee, N.H. Brooks, R.D. Isler, M.R. Wade, G.D. Porter APS-DPP, Seattle, Nov. 1999 NATIONAL FUSION FACILITY
More informationComparison of tungsten fuzz growth in Alcator C-Mod and linear plasma devices!
Comparison of tungsten fuzz growth in Alcator C-Mod and linear plasma devices G.M. Wright 1, D. Brunner 1, M.J. Baldwin 2, K. Bystrov 3, R. Doerner 2, B. LaBombard 1, B. Lipschultz 1, G. de Temmerman 3,
More informationHelium-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 informationao&p- 96 / O f Models and Applications of the UEDGE Code M.E. Rensink, D.A. Knoll, G.D. Porter, T.D. Rognlien, G.R. Smith, and F.
ao&p- 96 / O 3 4 - f UCRL-JC-12576 Preprint Models and Applications of the UEDGE Code ME Rensink DA Knoll GD Porter TD Rognlien GR Smith and F Wising This paper was prepared for submittal to AEA Technical
More informationDivertor Plasma Detachment
Divertor Plasma Detachment S. I. Krasheninnikov 1, A. S. Kukushkin 2,3 and A. A. Pshenov 2,3 1 University California San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0411, USA 2 National Research Nuclear
More informationModelling of Carbon Erosion and Deposition in the Divertor of JET
EFDA JET CP(01)02-64 A. Kirschner, V. Philipps, P. Wienhold, W. Fundamenski, G. Matthews, P. Coad, M. Stamp, D. Coster, D. Elder, P. Stangeby and JET EFDA Contributors Modelling of Carbon Erosion and Deposition
More informationBenchmarking Tokamak Edge Modelling Codes
EFDA JET CP(7)3/1 D.P. Coster, X. Bonnin, A. Chankin, G. Corrigan, W. Fundamenski, L. Owen, T. Rognlien, S. Wiesen, R. Zagórski and JET EFDA contributors Benchmarking Tokamak Edge Modelling Codes This
More informationStudies in JET Divertors of Varied Geometry I: Non Seeded Plasma Operation
JET P(98)19 Studies in JET Divertors of Varied Geometry I: Non Seeded Plasma Operation L D Horton, G C Vlases, P Andrew, V Bhatnagar, A Chankin, S Clement, G D Conway, S Davies, J C M de Haas 1, J K Ehrenberg,
More informationGA A22443 STUDY OF H MODE THRESHOLD CONDITIONS IN DIII D
GA A443 STUDY OF H MODE THRESHOLD CONDITIONS IN DIII D by R.J. GROEBNER, T.N. CARLSTROM, K.H. BURRELL, S. CODA, E.J. DOYLE, P. GOHIL, K.W. KIM, Q. PENG, R. MAINGI, R.A. MOYER, C.L. RETTIG, T.L. RHODES,
More informationCan we tend the fire?
Can we tend the fire? Three lectures course on plasma surface interaction and edge physics II.) HOW can we make the application work (build ITER)? Detlev Reiter Forschungszentrum Jülich GmbH, Institut
More informationRadiative type-iii ELMy H-mode in all-tungsten ASDEX Upgrade
Radiative type-iii ELMy H-mode in all-tungsten ASDEX Upgrade J. Rapp 1, A. Kallenbach 2, R. Neu 2, T. Eich 2, R. Fischer 2, A. Herrmann 2, S. Potzel 2, G.J. van Rooij 3, J.J. Zielinski 3 and ASDEX Upgrade
More informationEstimating the plasma flow in a recombining plasma from
Paper P3-38 Estimating the plasma flow in a recombining plasma from the H α emission U. Wenzel a, M. Goto b a Max-Planck-Institut für Plasmaphysik (IPP) b National Institute for Fusion Science, Toki 509-5292,
More informationDensity limits in toroidal plasmas
INSTITUTE OF PHYSICS PUBLISHING Plasma Phys. Control. Fusion 44 (2002) R27 R80 PLASMA PHYSICS AND CONTROLLED FUSION PII: S0741-3335(02)06592-2 TOPICAL REVIEW Density limits in toroidal plasmas Martin Greenwald
More informationErosion/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 informationEffect of divertor nitrogen seeding on the power exhaust channel width in Alcator C-Mod
Effect of divertor nitrogen seeding on the power exhaust channel width in Alcator C-Mod B. LaBombard, D. Brunner, A.Q. Kuang, W. McCarthy, J.L. Terry and the Alcator Team Presented at the International
More information