Impact of Localized ECRH on NBI and ICRH Driven Alfven Eigenmodes in the ASDEX Upgrade Tokamak

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Impact of Localized ECRH on NBI and ICRH Driven Alfven Eigenmodes in the ASDEX Upgrade Tokamak"

Transcription

1 Impact of Localized ECRH on NBI and ICRH Driven Alfven Eigenmodes in the ASDEX Upgrade Tokamak M. Garcia-Munoz M. A. Van Zeeland, S. Sharapov, Ph. Lauber, J. Ayllon, I. Classen, G. Conway, J. Ferreira, J. Galdon, B. Geiger, N. Lazanyi, F. Nabais, V. Nikoleva, D. C. Pace, L. Sanchis-Sanchez, A. Snicker, J. Stober, M. Weiland and the ASDEX Upgrade Team

2 DIII-D Observations Showed ECRH Can Have a Major Impact on NBI Driven AE Stability Localized ECRH has strong impact on RSAEs With on-axis ECRH deposition, strong RSAEs are observed With near q min ECRH deposition, RSAEs are mitigated TAEs still unstable though weaker M. A. Van Zeeland et al., PPCF (2008) Mitigation mechanism still under investigation (ITPA EP-7) M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 2

3 DIII-D Observations Showed ECRH Can Have a Major Impact on NBI Driven AE Stability Localized ECRH has strong Impact on RSAEs With on-axis ECRH deposition, strong RSAEs are observed With near q min ECRH deposition, RSAEs are mitigated TAEs still unstable though weaker M. A. Van Zeeland et al., PPCF (2008) Mitigation mechanism still under investigation (ITPA EP-7) M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 3

4 Goal of Experiments Investigate impact of localized ECRH on both NBI and RF tail driven Alfven Eigenmodes Check reproducibility of DIII-D result on NBI driven modes Extend studies to RF tail driven modes to test sensitivity to underlying distribution function Document change in AE stability with ECRH injection location and EP distribution Document resultant change in EP profiles and EP transport ECRH Near Axis #31541 RSAEs ECE Spectrogram Near q min BAAEs ECRH Near q #31545 min Model ECRH impact on AE stability and associated transport M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 4

5 Outline Introduction and Motivation Impact of localized ECRH on NBI Driven AEs Impact of localized ECRH on ICRH Driven AEs Modeling of Experimental Observations M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 5

6 Outline Introduction and Motivation Impact of localized ECRH on NBI Driven AEs Impact of localized ECRH on ICRH Driven AEs Modeling of Experimental Observations M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 6

7 Early NBI and ECRH Heating Used to Create Reversed Magnetic Shear and Drive Alfven Eigenmode Activity Beam (60kV) and ECRH heating begin t~0.2s M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 7

8 Early Beam and ECRH Heating Used to Create Reversed Magnetic Shear and Drive Alfven Eigenmode Activity ~r qmin Beam (60kV) and ECRH heating begin t~0.2s ECH deposition location scanned in series of discharges (positions 1-5) M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 8

9 Low and Reproducible Density from Discharge to Discharge Maintaining a repeatable density essential for isolating physics changing mode stability Low density important for EP population and mode drive M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 9

10 With ECRH Near Magnetic Axis Broad Spectrum of RSAE, TAE, and BAAE Driven Clear RSAE activity as qmin evolves #31541, ECRH #1 (Near Axis) ECE R~1.81m RSAEs ECE R~1.86m RSAEs BAAEs ECE R~1.90m RSAEs M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 10

11 Early Beam Heating With ECRH Near Mid-Radius (~q min ) Had Much Reduced AE Activity #31545, ECRH #4 (Near q min ) ECE R~1.81m Some MHD events visible q-profile still reversed as low-level RSAEs appear again later ECE R~1.86m Drastic changes like this in mode stability provide excellent tests for simulations validation ECE R~1.90m M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 11

12 Reflectometer Confirms Large Change in AE Stability Between ECRH Near-Axis and Near qmin ECRH Near Axis ECRH Near q min M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 12

13 Discharges with Suppressed RSAE Activity Show Classical Fast-Ion Profiles ECE Spectrogram Near q min ECRH Near Axis #31541 RSAEs BAAEs ECRH Near q #31545 min M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 13

14 Outline Introduction and Motivation Impact of localized ECRH on NBI Driven AEs Impact of localized ECRH on ICRH Driven AEs Modeling of Experimental Observations M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 14

15 RF-Tail Driven AE Portion of Experiment Also Used Early On-axis ECRH and Beams to Create Reversed Shear All RF discharges had same startup until t=0.6s on-axis ECRH and constant beam On-axis ECH ECH location varies shot to shot After t=0.6s ICRH (fundamental Hydrogen minority) NBI blips for diagnostics Gyrotrons that are scanned radially from shot to shot M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 15

16 RF-Tail Drives TAEs Preferentially and ECRH Impact on Modes is Not the Same as NBI Driven AEs ECE R~1.86m TAEs #31567 At switch to ICRH, TAEs become unstable RSAEs ICRH + ECRH On-axis BAAEs? also observed at very low frequency (low rotation) M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 16

17 RF-Tail Drives TAEs Preferentially and ECRH Impact on Modes is Not the Same as NBI Driven AEs ECE R~1.86m TAEs #31567 At switch to ICRH, TAEs become unstable RSAEs ECE R~1.86m RSAEs ICRH + ECRH On-axis #31569 TAEs ICRH + ECRH near q min BAAEs? also observed at very low frequency (low rotation) Switch to ECRH near q min produces little change of RF driven TAEs M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 17

18 RF-Tail Drives TAEs Preferentially and ECRH Impact on Modes is Not the Same as NBI Driven AEs ECE R~1.86m TAEs #31567 At switch to ICRH, TAEs become unstable RSAEs ECE R~1.86m RSAEs FILD ECE R~1.81m ICRH + ECRH On-axis #31569 TAEs ICRH + ECRH near q min #31569 RSAEs ICRH + ECRH near q min BAAEs? also observed at very low frequency (low rotation) Switch to ECRH near q min produces little change of RF driven TAEs With ECRH near q min, RSAEs also appear during ICRH phase FILD measures TAE induced losses M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 18

19 Outline Introduction and Motivation Impact of localized ECRH on NBI Driven AEs Impact of localized ECRH on ICRH Driven AEs Modeling of Experimental Observations M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 19

20 First Modelling Attempts Focus on Stability of NBI Driven AEs ECE Spectrogram Near q min Well modelled fast-ion distribution Based on TRANSP runs: linear analysis Higher density in higher damping Very different ratio Te/Ti all low-f modes are weakly damped due to reduced ion Landau damping Large Te/Ti BAAEs in ECRH Near Axis #31541 RSAEs BAAEs ECRH Near qmin #31545 M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 20

21 First Modelling Attempts Focus on Stability of NBI Driven AEs Well modelled fast-ion distribution Based on TRANSP runs: linear analysis Higher density in higher damping Very different ratio Te/Ti all low-f modes are weakly damped due to reduced ion Landau damping Large Te/Ti BAAEs in M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 21

22 Different q-profiles Lead to Significant Changes in Spectra RSAEs TAEs RSAEs TAEs LIGKA calculates kinetic continuum with and without fast-ions n=0 continua below TAE gap Small shear in #31545 changes spectra significantly Wider modes expected in #31545 q #31545 #31541 ρ pol M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 22

23 LIGKA Predict Broader Eigenfunctions w/o Fast-Ions in #31545 ES potential ES potential M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 23

24 LIGKA Calculates Kinetic Continuum Including Fast-Ion Effects Maxwellian fast-ion distribution with T eff = 25 kev P equi #31545 Fast-ion pressure comparable to total plasma pressure P EP P el FOW effects are not considered P ion ρ pol TRANSP M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 24

25 Fast-Ion Pressure Leads to n=0 Upshift No EP FOW effects for continuum lead to an overestimation of EP contribution to the pressure upshift but reasonable agreement with experimental observation 150 khz 75 khz Simulations upshift to 150 khz / Measured frequency 120 khz M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 25

26 Fast-Ion Pressure Leads to n=0 Upshift No EP FOW effects for continuum lead to an overestimation of EP contribution to the pressure upshift but reasonable agreement with experimental observation n=3 n=3, EP n=0 n=0, EP # khz 75 khz Simulations upshift to 150 khz / Measured frequency 120 khz ρ pol Due to peaked EP profile, maximum in continuum vanishes n=0 continuum reaches background particles only TAE gap M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 26

27 Modes Develop Continuum Interaction as EP Density Increases Ideal RSAEs transition to EPM as EP density increases in LIGKA systematic scan Modes start to develop a continuum interaction that moves radially outward 20% TRANSP EP pressure 100% TRANSP EP pressure #31545 n=3 #31545 n=3 ρ pol ρ pol Mode is damped by rather slow and cold part of the EP distribution function (n EP being rather large) M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 27

28 The Beta Suppression Mechanism * May Explain Some Features of Measured Spectra The coupling to GAM / BAEs may explain the absence of RSAEs ω AC has a mínimum when q min = m/n, i.e. k =0 As the temperature and density rise, the TAE frequency drops and the GAM frequency increases When beta is high enough so that the range of the frequency sweep is zero * E. D. Fredrickson et al., Phys. Plasmas 14, (2007) M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 28

29 The Beta Suppression Mechanism * May Explain Some Features of Measured Spectra The coupling to GAM / BAEs may explain the absence of RSAEs ω AC has a mínimum when q min = m/n, i.e. k =0 As the temperature and density rise, the TAE frequency drops and the GAM frequency increases When beta is high enough so that the range of the frequency sweep is zero * E. D. Fredrickson et al., Phys. Plasmas 14, (2007) M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 29

30 Conclusions / Outlook ECRH can have a major impact on AE stability First complete suppression of NBI driven RSAEs observed in Impact on ICRH driven AEs still contradictory Discharges with suppressed RSAE activity show classical fast-ion profiles Standard AEs cause significant fast-ion losses as routinely observed Systematic scans still need to be done to isolate the effect of different parameters changing with applied ECRH, e.g. q-profiles, Te/Ti, fast-ion pressure, etc The beta suppression mechanism may explain some features of the observed spectra Fast-ion effect must be taken into account in modelling to explain observations M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 30

31 Back-up slides

32 AEs Cause Significant Coherent Fast-Ion Losses Scintillator based Fast-Ion Loss Detector (FILD) measures coherent losses induced by RSAEs and TAEs FILD FILD Spectrogram #30370 Both RSAEs and TAEs cause similar coherent losses Resonant losses found only for trapped particles M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 16

33 AEs Cause Significant Coherent Fast-Ion Losses Scintillator based Fast-Ion Loss Detector (FILD) measures coherent losses induced by RSAEs and TAEs FILD Both RSAEs and TAEs cause similar coherent losses Resonant losses found only for trapped particles M. Garcia-Munoz 14 th IAEA Technical Meeting on Energetic Particles Vienna, Austria 3 rd September 2015 Page 16

34 The Primary Diagnostic Used for These Experiments is the Fast-Ion Loss Detector (FILD*) FILD is a magnetic spectrometer provides energy and pitch resolved measurements of escaping ions using collimator and tokamak magnetic field ion fast ions v tot v aperture v // Local velocity-space measurements like these help to isolate fundamental mechanisms Plasma *M. Garcia-Munoz et al., RSI. 80, (2009)

35 The Primary Diagnostic Used for These Experiments is the Fast-Ion Loss Detector (FILD*) FILD is a magnetic spectrometer provides energy and pitch resolved measurements of escaping ions using collimator and tokamak magnetic field Local velocity-space measurements like these help to isolate fundamental mechanisms fast ions v tot v v // Scintillator Image with Energy and Pitch ion Plasma aperture M. Garcia-Munoz et al., RSI. 80, (2009)

Active Control of Alfvén Eigenmodes in the ASDEX Upgrade tokamak

Active Control of Alfvén Eigenmodes in the ASDEX Upgrade tokamak Active Control of Alfvén Eigenmodes in the ASDEX Upgrade tokamak M. Garcia-Munoz, S. E. Sharapov, J. Ayllon, B. Bobkov, L. Chen, R. Coelho, M. Dunne, J. Ferreira, A. Figueiredo, M. Fitzgerald, J. Galdon-Quiroga,

More information

Beam Driven Alfvén Eigenmodes and Fast Ion Transport in the DIII-D and ASDEX Upgrade (AUG) Tokamaks

Beam Driven Alfvén Eigenmodes and Fast Ion Transport in the DIII-D and ASDEX Upgrade (AUG) Tokamaks Beam Driven Alfvén Eigenmodes and Fast Ion Transport in the DIII-D and ASDEX Upgrade (AUG) Tokamaks by M.A. Van Zeeland 1 M. García-Muñoz 2, W.W. Heidbrink 3, I. Classen 4, R.K. Fisher 1, B. Geiger 2,

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

Presentation by Herb Berk University of Texas at Austin Institute for Fusion Studies in Vienna, Austria Sept. 1-4, 2015

Presentation by Herb Berk University of Texas at Austin Institute for Fusion Studies in Vienna, Austria Sept. 1-4, 2015 Review of Theory Papers at 14 th IAEA technical meeting on Engertic Particles in Magnetic Confinement systems Presentation by Herb Berk University of Texas at Austin Institute for Fusion Studies in Vienna,

More information

Effects of fast ion phase space modifications by instabilities on fast ion modeling

Effects of fast ion phase space modifications by instabilities on fast ion modeling Effects of fast ion phase space modifications by instabilities on fast ion modeling M. Podestà, M. Gorelenkova, E. Fredrickson, N. Gorelenkov, R. White PPPL, Princeton USA Acknowledgements: NSTX-U and

More information

Nonlinear Energetic Particle Transport in the Presence of Multiple Alfvénic Waves in ITER

Nonlinear Energetic Particle Transport in the Presence of Multiple Alfvénic Waves in ITER Nonlinear Energetic Particle Transport in the Presence of Multiple Alfvénic Waves in ITER Mirjam Schneller, Philipp Lauber, Sergio Briguglio, Antti Snicker Acknowledgement M. Schneller 1, Ph. Lauber 1,

More information

Nonlinear Evolution and Radial Propagation of the Energetic Particle Driven GAM

Nonlinear Evolution and Radial Propagation of the Energetic Particle Driven GAM Nonlinear Evolution and Radial Propagation of the Energetic Particle Driven GAM by R. Nazikian In collaboration with G.Y. Fu, R.V. Budny, G.J. Kramer, PPPL G.R. McKee, U. Wisconsin T. Rhodes, L. Schmidt,

More information

Influence of ECR Heating on NBI-driven Alfvén Eigenmodes in the TJ-II Stellarator

Influence of ECR Heating on NBI-driven Alfvén Eigenmodes in the TJ-II Stellarator EX/P- Influence of ECR Heating on NBI-driven Alfvén Eigenmodes in the TJ-II Stellarator Á. Cappa, F. Castejón, T. Estrada, J.M. Fontdecaba, M. Liniers and E. Ascasíbar Laboratorio Nacional de Fusión CIEMAT,

More information

Characteristics of Energetic-Ion-Driven Geodesic Acoustic Modes in the Large Helical Device(LHD)

Characteristics of Energetic-Ion-Driven Geodesic Acoustic Modes in the Large Helical Device(LHD) O-4 12 th IAEA TM on Energetic Particles in Magnetic Confinement Systems, 7-10 Sep, Austin, USA Characteristics of Energetic-Ion-Driven Geodesic Acoustic Modes in the Large Helical Device(LHD) K. Toi,

More information

Fast Particle Physics on ASDEX Upgrade Interaction of Energetic Particles with Large and Small Scale Instabilities

Fast Particle Physics on ASDEX Upgrade Interaction of Energetic Particles with Large and Small Scale Instabilities 1 EX/6-1 Fast Particle Physics on ASDEX Upgrade Interaction of Energetic Particles with Large and Small Scale Instabilities S. Günter 1, G. Conway 1, C. Forest 2, H.-U. Fahrbach 1, M. Garcia Muñoz 1, S.

More information

Stability Properties of Toroidal Alfvén Modes Driven. N. N. Gorelenkov, S. Bernabei, C. Z. Cheng, K. Hill, R. Nazikian, S. Kaye

Stability Properties of Toroidal Alfvén Modes Driven. N. N. Gorelenkov, S. Bernabei, C. Z. Cheng, K. Hill, R. Nazikian, S. Kaye Stability Properties of Toroidal Alfvén Modes Driven by Fast Particles Λ N. N. Gorelenkov, S. Bernabei, C. Z. Cheng, K. Hill, R. Nazikian, S. Kaye Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton,

More information

MHD Induced Fast-Ion Losses in ASDEX Upgrade

MHD Induced Fast-Ion Losses in ASDEX Upgrade Max-Planck-Insititut für Plasmaphysik MHD Induced Fast-Ion Losses in ASDEX Upgrade Manuel García-Muñoz1 H.-U. Fahrbach1, M. Bruedgam1, V. Bobkov1, A. Flaws1, M. Gobbin2, S. Günter1, P. Lauber1, M. Mantsinen1,4,

More information

Energetic Particle Physics in Tokamak Burning Plasmas

Energetic Particle Physics in Tokamak Burning Plasmas Energetic Particle Physics in Tokamak Burning Plasmas presented by C. Z. (Frank) Cheng in collaboration with N. N. Gorelenkov, G. J. Kramer, R. Nazikian, E. Fredrickson, Princeton Plasma Physics Laboratory

More information

Infernal Alfvén Eigenmodes in Low-Shear Tokamaks. Institute for Nuclear Research, Kyiv, Ukraine

Infernal Alfvén Eigenmodes in Low-Shear Tokamaks. Institute for Nuclear Research, Kyiv, Ukraine 5 th IAEA TM on Theory of Plasma Instabilities Austin, USA, 5-7 Sept. 2011 Infernal Alfvén Eigenmodes in Low-Shear Tokamaks V.S. Marchenko, Ya.I. Kolesnichenko, and S.N. Reznik Institute for Nuclear Research,

More information

Neutral Beam-Ion Prompt Loss Induced by Alfvén Eigenmodes in DIII-D

Neutral Beam-Ion Prompt Loss Induced by Alfvén Eigenmodes in DIII-D Neutral Beam-Ion Prompt Loss Induced by Alfvén Eigenmodes in DIII-D by X. Chen,1 M.E. Austin,2 R.K. Fisher,3 W.W. Heidbrink,1 G.J. Kramer,4 R. Nazikian,4 D.C. Pace,3 C.C. Petty,3 M.A. Van Zeeland3 1University

More information

Transport Improvement Near Low Order Rational q Surfaces in DIII D

Transport Improvement Near Low Order Rational q Surfaces in DIII D Transport Improvement Near Low Order Rational q Surfaces in DIII D M.E. Austin 1 With K.H. Burrell 2, R.E. Waltz 2, K.W. Gentle 1, E.J. Doyle 8, P. Gohil 2, C.M. Greenfield 2, R.J. Groebner 2, W.W. Heidbrink

More information

Simulation Study of Interaction between Energetic Ions and Alfvén Eigenmodes in LHD

Simulation Study of Interaction between Energetic Ions and Alfvén Eigenmodes in LHD 1 Simulation Study of Interaction between Energetic Ions and Alfvén Eigenmodes in LHD Y. Todo 1), N. Nakajima 1), M. Osakabe 1), S. Yamamoto 2), D. A. Spong 3) 1) National Institute for Fusion Science,

More information

Global gyrokinetic modeling of geodesic acoustic modes and shear Alfvén instabilities in ASDEX Upgrade.

Global gyrokinetic modeling of geodesic acoustic modes and shear Alfvén instabilities in ASDEX Upgrade. 1 EX/P1-18 Global gyrokinetic modeling of geodesic acoustic modes and shear Alfvén instabilities in ASDEX Upgrade. A. Biancalani 1, A. Bottino 1, S. Briguglio 2, G.D. Conway 1, C. Di Troia 2, R. Kleiber

More information

Reduction of Neoclassical Transport and Observation of a Fast Electron Driven Instability with Quasisymmetry in HSX

Reduction of Neoclassical Transport and Observation of a Fast Electron Driven Instability with Quasisymmetry in HSX 1 Reduction of Neoclassical Transport and Observation of a Fast Electron Driven Instability with Quasisymmetry in HSX J.M. Canik 1), D.L. Brower 2), C. Deng 2), D.T. Anderson 1), F.S.B. Anderson 1), A.F.

More information

ENERGETIC PARTICLES AND BURNING PLASMA PHYSICS

ENERGETIC PARTICLES AND BURNING PLASMA PHYSICS ENERGETIC PARTICLES AND BURNING PLASMA PHYSICS Reported by J. Van Dam Institute for Fusion Studies The University of Texas at Austin US-Japan JIFT Workshop on Theory-Based Modeling and Integrated Simulation

More information

Experimental Study of the Stability of Alfvén Eigenmodes on JET

Experimental Study of the Stability of Alfvén Eigenmodes on JET IAEA FEC, Paper EX/P-7 Experimental Study of the Stability of Alfvén Eigenmodes on JET D.Testa,, A.Fasoli,, G.Fu 4, A.Jaun 3, D.Borba, P.de Vries 6, and JET-EFDA contributors [] Plasma Science and Fusion

More information

MHD-particle simulations and collective alpha-particle transport: analysis of ITER scenarios and perspectives for integrated modelling

MHD-particle simulations and collective alpha-particle transport: analysis of ITER scenarios and perspectives for integrated modelling MHD-particle simulations and collective alpha-particle transport: analysis of ITER scenarios and perspectives for integrated modelling G. Vlad, S. Briguglio, G. Fogaccia, F. Zonca Associazione Euratom-ENEA

More information

Excitation of Alfvén eigenmodes with sub-alfvénic neutral beam ions in JET and DIII-D plasmas

Excitation of Alfvén eigenmodes with sub-alfvénic neutral beam ions in JET and DIII-D plasmas Excitation of Alfvén eigenmodes with sub-alfvénic neutral beam ions in JET and DIII-D plasmas D. Borba 1,9, R. Nazikian 2, B. Alper 3, H.L. Berk 4, A. Boboc 3, R.V. Budny 2, K.H. Burrell 5, M. De Baar

More information

Three Dimensional Effects in Tokamaks How Tokamaks Can Benefit From Stellarator Research

Three Dimensional Effects in Tokamaks How Tokamaks Can Benefit From Stellarator Research 1 TH/P9-10 Three Dimensional Effects in Tokamaks How Tokamaks Can Benefit From Stellarator Research S. Günter, M. Garcia-Munoz, K. Lackner, Ph. Lauber, P. Merkel, M. Sempf, E. Strumberger, D. Tekle and

More information

GA A26741 SCINTILLATOR-BASED DIAGNOSTIC FOR FAST ION LOSS MEASUREMENTS ON DIII-D

GA A26741 SCINTILLATOR-BASED DIAGNOSTIC FOR FAST ION LOSS MEASUREMENTS ON DIII-D GA A26741 SCINTILLATOR-BASED DIAGNOSTIC FOR FAST ION LOSS MEASUREMENTS ON DIII-D by R.K. FISHER, D.C. PACE, M. GARCÍA-MUÑOZ, W.W. HEIDBRINK, C.M. MUSCATELLO, M.A. VAN ZEELAND and Y.B. ZHU JUNE 2010 DISCLAIMER

More information

M.Osakabe, T.Itoh1, K. Ogawa3,4, M. Isobe1,2, K. Toi1,3, T.Ido1,3, A. Shimizu1, S. Kubo1,3, K.Nagaoka1, Y.Takeiri1,2 and LHD experiment group

M.Osakabe, T.Itoh1, K. Ogawa3,4, M. Isobe1,2, K. Toi1,3, T.Ido1,3, A. Shimizu1, S. Kubo1,3, K.Nagaoka1, Y.Takeiri1,2 and LHD experiment group 5th IAEA-TM on EP September 5-10, 2011 Austin, Texas M.Osakabe, T.Itoh1, K. Ogawa3,4, M. Isobe1,2, K. Toi1,3, T.Ido1,3, A. Shimizu1, S. Kubo1,3, K.Nagaoka1, Y.Takeiri1,2 and LHD experiment group 1National

More information

Hybrid Kinetic-MHD simulations with NIMROD

Hybrid Kinetic-MHD simulations with NIMROD simulations with NIMROD 1 Yasushi Todo 2, Dylan P. Brennan 3, Kwang-Il You 4, Jae-Chun Seol 4 and the NIMROD Team 1 University of Washington, Seattle 2 NIFS, Toki-Japan 3 University of Tulsa 4 NFRI, Daejeon-Korea

More information

Kinetic Alfvén Eigenmodes at ASDEX Upgrade

Kinetic Alfvén Eigenmodes at ASDEX Upgrade Kinetic Alfvén Eigenmodes at ASDEX Upgrade Ph. Lauber 1, M. Brüdgam 1, D. Curran, V. Igochine 1, K. Sassenberg, S. Günter 1, M. Maraschek 1, M. García-Muñoz 1, N. Hicks 1 and the ASDEX Upgrade Team 1 Max-Planck-Institut

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

SUMMARY OF EXPERIMENTAL CORE TURBULENCE CHARACTERISTICS IN OH AND ECRH T-10 TOKAMAK PLASMAS

SUMMARY OF EXPERIMENTAL CORE TURBULENCE CHARACTERISTICS IN OH AND ECRH T-10 TOKAMAK PLASMAS SUMMARY OF EXPERIMENTAL CORE TURBULENCE CHARACTERISTICS IN OH AND ECRH T-1 TOKAMAK PLASMAS V. Vershkov, L.G. Eliseev, S.A. Grashin. A.V. Melnikov, D.A. Shelukhin, S.V. Soldatov, A.O. Urazbaev and T-1 team

More information

MHD instability driven by supra-thermal electrons in TJ-II stellarator

MHD instability driven by supra-thermal electrons in TJ-II stellarator MHD instability driven by supra-thermal electrons in TJ-II stellarator K. Nagaoka 1, S. Yamamoto 2, S. Ohshima 2, E. Ascasíbar 3, R. Jiménez-Gómez 3, C. Hidalgo 3, M.A. Pedrosa 3, M. Ochando 3, A.V. Melnikov

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

The performance of improved H-modes at ASDEX Upgrade and projection to ITER

The performance of improved H-modes at ASDEX Upgrade and projection to ITER EX/1-1 The performance of improved H-modes at ASDEX Upgrade and projection to George Sips MPI für Plasmaphysik, EURATOM-Association, D-85748, Germany G. Tardini 1, C. Forest 2, O. Gruber 1, P. Mc Carthy

More information

Abstract. see Appendix to IAEA-CN-69/OV1/2, The JET Team (presented by M.L. Watkins)

Abstract. see Appendix to IAEA-CN-69/OV1/2, The JET Team (presented by M.L. Watkins) Abstract ALPHA PARTICLE STUDIES DURING JET DT EXPERIMENTS The JET Team (presented by P.R. Thomas) Joint European Torus, Abingdon, Oxfordshire, United Kingdom. The 997 DT experiment (DTE) at the Joint European

More information

Nonlinear Energetic Particle Transport in the Presence of Multiple Alfvénic Waves in ITER. Mirjam Schneller

Nonlinear Energetic Particle Transport in the Presence of Multiple Alfvénic Waves in ITER. Mirjam Schneller Nonlinear Energetic Particle Transport in the Presence of Multiple Alfvénic Waves in ITER Mirjam Schneller Acknowledgements Ph. Lauber 1, S. Briguglio 2, A. Snicker 3,1, X. Wang 1 1 Max-Planck-Institut

More information

Heating and current drive: Radio Frequency

Heating and current drive: Radio Frequency Heating and current drive: Radio Frequency Dr Ben Dudson Department of Physics, University of York Heslington, York YO10 5DD, UK 13 th February 2012 Dr Ben Dudson Magnetic Confinement Fusion (1 of 26)

More information

Localized Electron Cyclotron Current Drive in DIII D: Experiment and Theory

Localized Electron Cyclotron Current Drive in DIII D: Experiment and Theory Localized Electron Cyclotron Current Drive in : Experiment and Theory by Y.R. Lin-Liu for C.C. Petty, T.C. Luce, R.W. Harvey,* L.L. Lao, P.A. Politzer, J. Lohr, M.A. Makowski, H.E. St John, A.D. Turnbull,

More information

Effects of Alpha Particle Transport Driven by Alfvénic Instabilities on Proposed Burning Plasma Scenarios on ITER

Effects of Alpha Particle Transport Driven by Alfvénic Instabilities on Proposed Burning Plasma Scenarios on ITER Effects of Alpha Particle Transport Driven by Alfvénic Instabilities on Proposed Burning Plasma Scenarios on ITER G. Vlad, S. Briguglio, G. Fogaccia, F. Zonca Associazione Euratom-ENEA sulla Fusione, C.R.

More information

Analysis and modelling of MHD instabilities in DIII-D plasmas for the ITER mission

Analysis and modelling of MHD instabilities in DIII-D plasmas for the ITER mission Analysis and modelling of MHD instabilities in DIII-D plasmas for the ITER mission by F. Turco 1 with J.M. Hanson 1, A.D. Turnbull 2, G.A. Navratil 1, C. Paz-Soldan 2, F. Carpanese 3, C.C. Petty 2, T.C.

More information

Studies on Neutral Beam Ion Confinement and MHD Induced Fast-Ion. Loss on HL-2A Tokamak

Studies on Neutral Beam Ion Confinement and MHD Induced Fast-Ion. Loss on HL-2A Tokamak Studies on Neutral Beam Ion Confinement and MHD Induced Fast-Ion Loss on HL-A Tokamak LIU Yi, ISOBE Mitsutaka, PENG Xiao-Dong, Wang Hao, JI Xiao-Quan, CHEN Wei, ZHANG Yi-Po, Dong Yun-Bo, MORITA Shigeru

More information

TAE internal structure through high-resolution soft x-ray measurements in ASDEX-Upgrade. Abstract

TAE internal structure through high-resolution soft x-ray measurements in ASDEX-Upgrade. Abstract TAE internal structure through high-resolution soft x-ray measurements in ASDEX-Upgrade P. Piovesan 1,2, V. Igochine 3, P. Lauber 3, K. Sassenberg 3,4, A. Flaws 3, M. García-Muñoz 3, S. Günter 3, M. Maraschek

More information

Observation of modes at frequencies above the Alfvén frequency in JET

Observation of modes at frequencies above the Alfvén frequency in JET Observation of modes at frequencies above the Alfvén frequency in JET F. Nabais 1, D. Borba 1, R. Coelho 1, L. Fazendeiro 1, J. Ferreira 1, A. Figueiredo 1, L. Fitzgerald 2, P. Rodrigues 1, S. Sharapov

More information

Nonlinear Consequences of Weakly Driven Energetic Particle Instabilities

Nonlinear Consequences of Weakly Driven Energetic Particle Instabilities 2008 International Sherwood Fusion Theory Conference March 30 - April 2, 2008, Boulder, Colorado Nonlinear Consequences of Weakly Driven Energetic Particle Instabilities Boris Breizman Institute for Fusion

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

Direct drive by cyclotron heating can explain spontaneous rotation in tokamaks

Direct drive by cyclotron heating can explain spontaneous rotation in tokamaks Direct drive by cyclotron heating can explain spontaneous rotation in tokamaks J. W. Van Dam and L.-J. Zheng Institute for Fusion Studies University of Texas at Austin 12th US-EU Transport Task Force Annual

More information

Macroscopic Stability

Macroscopic Stability Macroscopic Stability FESAC Facilities Panel Meeting June 13, 2005 E. S. Marmar for the Alcator Group Unique C-Mod Properties Guide MHD Research Program High field, high current density, compact size,

More information

Predictive Study on High Performance Modes of Operation in HL-2A 1

Predictive Study on High Performance Modes of Operation in HL-2A 1 1 EX/P-0 Predictive Study on High Performance Modes of Oration in HL-A 1 Qingdi GAO 1), R. V. BUDNY ), Fangzhu LI 1), Jinhua ZHANG 1), Hongng QU 1) 1) Southwestern Institute of Physics, Chengdu, Sichuan,

More information

Annual report of the ITPA Topical Group on Energetic Particle Physics. For the period Nov 2010 to Oct 2011

Annual report of the ITPA Topical Group on Energetic Particle Physics. For the period Nov 2010 to Oct 2011 Annual report of the ITPA Topical Group on Energetic Particle Physics For the period Nov 2010 to Oct 2011 The EP Topical Group held two meetings (its 6 th and 7 th ) during the reporting period at ENEA

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

Spectroscopic determination of the internal amplitude of frequency sweeping TAE

Spectroscopic determination of the internal amplitude of frequency sweeping TAE INSTITUTE OF PHYSICS PUBLISHING Plasma Phys. Control. Fusion 46 (2004) S47 S57 PLASMA PHYSICS AND CONTROLLED FUSION PII: S0741-3335(04)72680-9 Spectroscopic determination of the internal amplitude of frequency

More information

Energetic-Ion-Driven Global Instabilities Observed in the Large Helical Device and Their Effects on Energetic Ion Confinement

Energetic-Ion-Driven Global Instabilities Observed in the Large Helical Device and Their Effects on Energetic Ion Confinement Energetic-Ion-Driven Global Instabilities Observed in the Large Helical Device and Their Effects on Energetic Ion Confinement Kazuo TOI National Institute for Fusion Science, Toki 509-5292, Japan (Received

More information

Nonperturbative Effects of Energetic Ions on Alfvén Eigenmodes

Nonperturbative Effects of Energetic Ions on Alfvén Eigenmodes 1 TH/3-1Ra Nonperturbative Effects of Energetic Ions on Alfvén Eigenmodes Y. Todo 1), N. Nakajima 1), K. Shinohara 2), M. Takechi 2), M. Ishikawa 2), S. Yamamoto 3) 1) National Institute for Fusion Science,

More information

Predictions of fusion α-particle transport due to Alfvén eigenmodes in ITER

Predictions of fusion α-particle transport due to Alfvén eigenmodes in ITER Predictions of fusion α-particle transport due to Alfvén eigenmodes in ITER M. Fitzgerald, S.E. Sharapov, P. Rodrigues 2, A. Polevoi 3, D. Borba 2 2 Instituto de Plasmas e Fusão Nuclear, Instituto Superior

More information

Nonlinear MHD effects on TAE evolution and TAE bursts

Nonlinear MHD effects on TAE evolution and TAE bursts Nonlinear MHD effects on TAE evolution and TAE bursts Y. Todo (NIFS) collaborating with H. L. Berk and B. N. Breizman (IFS, Univ. Texas) GSEP 3rd Annual Meeting (remote participation / Aug. 9-10, 2010)

More information

Gyrokinetic Transport Driven by Energetic Particle Modes

Gyrokinetic Transport Driven by Energetic Particle Modes Gyrokinetic Transport Driven by Energetic Particle Modes by Eric Bass (General Atomics) Collaborators: Ron Waltz, Ming Chu GSEP Workshop General Atomics August 10, 2009 Outline I. Background Alfvén (TAE/EPM)

More information

Impact of Energetic-Ion-Driven Global Modes on Toroidal Plasma Confinements

Impact of Energetic-Ion-Driven Global Modes on Toroidal Plasma Confinements Impact of Energetic-Ion-Driven Global Modes on Toroidal Plasma Confinements Kazuo TOI CHS & LHD Experimental Group National Institute for Fusion Science Toki 59-5292, Japan Special contributions from:

More information

Energetic-Ion Driven Alfvén Eigenmodes in Large Helical Device Plasmas with Three-Dimensional Structure and Their Impact on Energetic Ion Transport

Energetic-Ion Driven Alfvén Eigenmodes in Large Helical Device Plasmas with Three-Dimensional Structure and Their Impact on Energetic Ion Transport Energetic-Ion Driven Alfvén Eigenmodes in Large Helical Device Plasmas with Three-Dimensional Structure and Their Impact on Energetic Ion Transport K. Toi, S. Yamamoto 1), N. Nakajima, S. Ohdachi, S. Sakakibara,

More information

Energetic-Ion-Driven MHD Instab. & Transport: Simulation Methods, V&V and Predictions

Energetic-Ion-Driven MHD Instab. & Transport: Simulation Methods, V&V and Predictions Energetic-Ion-Driven MHD Instab. & Transport: Simulation Methods, V&V and Predictions 7th APTWG Intl. Conference 5-8 June 2017 Nagoya Univ., Nagoya, Japan Andreas Bierwage, Yasushi Todo 14.1MeV 10 kev

More information

Edge Zonal Flows and Blob Propagation in Alcator C-Mod P5.073 EPS 2011

Edge Zonal Flows and Blob Propagation in Alcator C-Mod P5.073 EPS 2011 Edge Zonal Flows and Blob Propagation in Alcator C-Mod S.J. Zweben 1, J.L. Terry 2, M. Agostini 3, B. Davis 1, O. Grulke 4,J. Hughes 2, B. LaBombard 2 D.A. D'Ippolito 6, R. Hager 5, J.R. Myra 6, D.A. Russell

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

Fast Particle Instabilities in MAST

Fast Particle Instabilities in MAST 1 EX/P8-7 Fast Particle Instabilities in MAST S.D. Pinches 1), L.C. Appel 1), I.T. Chapman 1), G. Cunningham 1), D. Dunai 2), M.P. Gryaznevich 1), A.R. Field 1), M.J. Hole 3), D.F. Howell 1), M.-D. Hua

More information

Linear properties of reversed shear Alfvén eigenmodes in the DIII-D tokamak

Linear properties of reversed shear Alfvén eigenmodes in the DIII-D tokamak IOP PUBLISHING and INTERNATIONAL ATOMIC ENERGY AGENCY Nucl Fusion 5 0) 043006 0pp) NUCLEAR FUSION doi:0088/009-555/5/4/043006 Linear properties of reversed shear Alfvén eigenmodes in the DIII-D tokamak

More information

Macroscopic Stability Research Program on Alcator C-Mod

Macroscopic Stability Research Program on Alcator C-Mod Macroscopic Stability Research Program on Alcator C-Mod Presented by R. Granetz Alcator C-Mod PAC 04-06 Feb 2009 Principal areas of MHD research on C-Mod Disruptions and disruption mitigation, including

More information

L Aquila, Maggio 2002

L Aquila, Maggio 2002 Nonlinear saturation of Shear Alfvén Modes and energetic ion transports in Tokamak equilibria with hollow-q profiles G. Vlad, S. Briguglio, F. Zonca, G. Fogaccia Associazione Euratom-ENEA sulla Fusione,

More information

Overview of results from MAST Presented by: Glenn Counsell, for the MAST team

Overview of results from MAST Presented by: Glenn Counsell, for the MAST team Overview of results from MAST Presented by: Glenn Counsell, for the MAST team This work was jointly funded by the UK Engineering & Physical Sciences Research Council and Euratom Focus on 4 areas The L-H

More information

Energetic particle modes: from bump on tail to tokamak plasmas

Energetic particle modes: from bump on tail to tokamak plasmas Energetic particle modes: from bump on tail to tokamak plasmas M. K. Lilley 1 B. N. Breizman 2, S. E. Sharapov 3, S. D. Pinches 3 1 Physics Department, Imperial College London, London, SW7 2AZ, UK 2 IFS,

More information

Macroscopic Stability Research on Alcator C-Mod: 5-year plan

Macroscopic Stability Research on Alcator C-Mod: 5-year plan Macroscopic Stability Research on Alcator C-Mod: 5-year plan Presented by R. Granetz Alcator C-Mod PAC 06-08 Feb 2008 Principal MHD Research Topics in the Next 5-year Plan Effects of non-axisymmetric fields

More information

Heating and Current Drive by Electron Cyclotron Waves in JT-60U

Heating and Current Drive by Electron Cyclotron Waves in JT-60U EX/W- Heating and Current Drive by Electron Cyclotron Waves in JT-6U T. Suzuki ), S. Ide ), C. C. Petty ), Y. Ikeda ), K. Kajiwara ), A. Isayama ), K. Hamamatsu ), O. Naito ), M. Seki ), S. Moriyama )

More information

Shear Alfvén Wave Continuous Spectrum in the Presence of a Magnetic Island

Shear Alfvén Wave Continuous Spectrum in the Presence of a Magnetic Island 1 TH/P3-5 Shear Alfvén Wave Continuous Spectrum in the Presence of a Magnetic Island A. Biancalani 1), L. Chen 2) 3), F. Pegoraro 1), F. Zonca 4), S. V. Annibaldi 5), A. Botrugno 4), P. Buratti 4) and

More information

GA A23713 RECENT ECCD EXPERIMENTAL STUDIES ON DIII D

GA A23713 RECENT ECCD EXPERIMENTAL STUDIES ON DIII D GA A271 RECENT ECCD EXPERIMENTAL STUDIES ON DIII D by C.C. PETTY, J.S. degrassie, R.W. HARVEY, Y.R. LIN-LIU, J.M. LOHR, T.C. LUCE, M.A. MAKOWSKI, Y.A. OMELCHENKO, and R. PRATER AUGUST 2001 DISCLAIMER This

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

Damping and drive of low frequency modes in tokamak plasmas

Damping and drive of low frequency modes in tokamak plasmas Damping and drive of low frequency modes in tokamak plasmas Ph. Lauber, S. Günter Max-Planck-Institut für Plasmaphysik, EURATOM-Association, Garching, Germany E-mail: Philipp.Lauber@ipp.mpg.de Abstract.

More information

Alfvén cascades in JET discharges with NBI-heating

Alfvén cascades in JET discharges with NBI-heating INSTITUTE OF PHYSICS PUBLISHING and INTERNATIONAL ATOMIC ENERGY AGENCY NUCLEAR FUSION Nucl. Fusion 6 (6) S868 S879 doi:1.188/9-5515/6/1/s Alfvén cascades in JET discharges with NBI-heating S.E. Sharapov

More information

Study of chirping Toroidicity-induced Alfvén Eigenmodes in the National Spherical Torus Experiment

Study of chirping Toroidicity-induced Alfvén Eigenmodes in the National Spherical Torus Experiment Study of chirping Toroidicity-induced Alfvén Eigenmodes in the National Spherical Torus Experiment M. Podestà 1, R. E. Bell 1, A. Bortolon 2, N. A. Crocker 3, D. S. Darrow 1, E. D. Fredrickson 1, G.-Y.

More information

Effect of ideal kink instabilities on particle redistribution

Effect of ideal kink instabilities on particle redistribution Effect of ideal kink instabilities on particle redistribution H. E. Ferrari1,2,R. Farengo1, P. L. Garcia-Martinez2, M.-C. Firpo3, A. F. Lifschitz4 1 Comisión Nacional de Energía Atómica, Centro Atomico

More information

Alpha Particle Transport Induced by Alfvénic Instabilities in Proposed Burning Plasma Scenarios

Alpha Particle Transport Induced by Alfvénic Instabilities in Proposed Burning Plasma Scenarios Alpha Particle Transport Induced by Alfvénic Instabilities in Proposed Burning Plasma Scenarios G. Vlad, S. Briguglio, G. Fogaccia and F. Zonca Associazione Euratom-ENEA sulla Fusione, C.R. Frascati C.P.

More information

THE DIII D PROGRAM THREE-YEAR PLAN

THE DIII D PROGRAM THREE-YEAR PLAN THE PROGRAM THREE-YEAR PLAN by T.S. Taylor Presented to Program Advisory Committee Meeting January 2 21, 2 3 /TST/wj PURPOSE OF TALK Show that the program plan is appropriate to meet the goals and is well-aligned

More information

Development of Net-Current Free Heliotron Plasmas in the Large Helical Device

Development of Net-Current Free Heliotron Plasmas in the Large Helical Device Development of Net-Current Free Heliotron Plasmas in the Large Helical Device A. Komori for the LHD Experimental Group National Institute for Fusion Science Toki, Japan 22nd IAEA Fusion Energy Conference

More information

Ions lost on their first orbit can impact Alfvén eigenmode stability

Ions lost on their first orbit can impact Alfvén eigenmode stability Ions lost on their first orbit can impact Alfvén eigenmode stability W.W. Heidbrink 1, Guo-Yong Fu 2 and M.A. Van Zeeland 3 1 University of California Irvine, Irvine, California, USA 2 Princeton Plasma

More information

Resistive Wall Mode Observation and Control in ITER-Relevant Plasmas

Resistive Wall Mode Observation and Control in ITER-Relevant Plasmas Resistive Wall Mode Observation and Control in ITER-Relevant Plasmas J. P. Levesque April 12, 2011 1 Outline Basic Resistive Wall Mode (RWM) model RWM stability, neglecting kinetic effects Sufficient for

More information

ECH Density Pumpout and Small Scale Turbulence in DIII-D

ECH Density Pumpout and Small Scale Turbulence in DIII-D ECH Density Pumpout and Small Scale Turbulence in DIII-D By K.L. Wong, T.L. Rhodes, R. Prater, R. Jayakumar, R. Budny, C.C. Petty, R. Nazikian, and W.A. Peebles Background It has been known for more than

More information

Kinetic Alfvén waves in space plasmas

Kinetic Alfvén waves in space plasmas Kinetic Alfvén waves in space plasmas Yuriy Voitenko Belgian Institute for Space Aeronomy, Brussels, Belgium Solar-Terrestrial Center of Excellence, Space Pole, Belgium Recent results obtained in collaboration

More information

Integrated Heat Transport Simulation of High Ion Temperature Plasma of LHD

Integrated Heat Transport Simulation of High Ion Temperature Plasma of LHD 1 TH/P6-38 Integrated Heat Transport Simulation of High Ion Temperature Plasma of LHD S. Murakami 1, H. Yamaguchi 1, A. Sakai 1, K. Nagaoka 2, H. Takahashi 2, H. Nakano 2, M. Osakabe 2, K. Ida 2, M. Yoshinuma

More information

Recent Development of LHD Experiment. O.Motojima for the LHD team National Institute for Fusion Science

Recent Development of LHD Experiment. O.Motojima for the LHD team National Institute for Fusion Science Recent Development of LHD Experiment O.Motojima for the LHD team National Institute for Fusion Science 4521 1 Primary goal of LHD project 1. Transport studies in sufficiently high n E T regime relevant

More information

Research of Basic Plasma Physics Toward Nuclear Fusion in LHD

Research of Basic Plasma Physics Toward Nuclear Fusion in LHD Research of Basic Plasma Physics Toward Nuclear Fusion in LHD Akio KOMORI and LHD experiment group National Institute for Fusion Science, Toki, Gifu 509-5292, Japan (Received 4 January 2010 / Accepted

More information

Effects of stellarator transform on sawtooth oscillations in CTH. Jeffrey Herfindal

Effects of stellarator transform on sawtooth oscillations in CTH. Jeffrey Herfindal Effects of stellarator transform on sawtooth oscillations in CTH Jeffrey Herfindal D.A. Ennis, J.D. Hanson, G.J. Hartwell, E.C. Howell, C.A. Johnson, S.F. Knowlton, X. Ma, D.A. Maurer, M.D. Pandya, N.A.

More information

MHD-Induced Alpha Particle Loss in TFTR. S.J. Zweben, D.S. Darrow, E.D. Fredrickson, G. Taylor, S. von Goeler, R.B. White

MHD-Induced Alpha Particle Loss in TFTR. S.J. Zweben, D.S. Darrow, E.D. Fredrickson, G. Taylor, S. von Goeler, R.B. White MHD-Induced Alpha Particle Loss in TFTR S.J. Zweben, D.S. Darrow, E.D. Fredrickson, G. Taylor, S. von Goeler, R.B. White Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, NJ 8543 Abstract MHD-induced

More information

S1/2 EX/S, EX/D, EX/W

S1/2 EX/S, EX/D, EX/W S1/2 EX/S, EX/D, EX/W S1/2 EX/S - Magnetic Confinement Experiments: Stability 47 papers EX/W - Magnetic Confinement Experiments: Wave plasma interactions, current drive & heating, energetic particles 58

More information

Nonlinear Simulation of Energetic Particle Modes in JT-60U

Nonlinear Simulation of Energetic Particle Modes in JT-60U TH/P6-7 Nonlinear Simulation of Energetic Particle Modes in JT-6U A.Bierwage,N.Aiba 2, K.Shinohara 2, Y.Todo 3,W.Deng 4,M.Ishikawa 2,G.Matsunaga 2 and M. Yagi Japan Atomic Energy Agency (JAEA), Rokkasho,

More information

- Effect of Stochastic Field and Resonant Magnetic Perturbation on Global MHD Fluctuation -

- Effect of Stochastic Field and Resonant Magnetic Perturbation on Global MHD Fluctuation - 15TH WORKSHOP ON MHD STABILITY CONTROL: "US-Japan Workshop on 3D Magnetic Field Effects in MHD Control" U. Wisconsin, Madison, Nov 15-17, 17, 2010 LHD experiments relevant to Tokamak MHD control - Effect

More information

Geodesic Acoustic and related modes

Geodesic Acoustic and related modes Geodesic Acoustic and related modes A. Smolyakov* Acknowledgements X. Garbet, C. Nguyen (CEA Cadarache) V.I. Ilgisonis, V.P. Lakhin, A.Melnikov (Kurchatov Institute) * University of Saskatchewan, Canada

More information

GA A24016 PHYSICS OF OFF-AXIS ELECTRON CYCLOTRON CURRENT DRIVE

GA A24016 PHYSICS OF OFF-AXIS ELECTRON CYCLOTRON CURRENT DRIVE GA A6 PHYSICS OF OFF-AXIS ELECTRON CYCLOTRON CURRENT DRIVE by R. PRATER, C.C. PETTY, R. HARVEY, Y.R. LIN-LIU, J.M. LOHR, and T.C. LUCE JULY DISCLAIMER This report was prepared as an account of work sponsored

More information

INTERNATIONAL ATOMIC ENERGY AGENCY 21 st IAEA Fusion Energy Conference Chengdu, China, October 2006

INTERNATIONAL ATOMIC ENERGY AGENCY 21 st IAEA Fusion Energy Conference Chengdu, China, October 2006 IAEA INTERNATIONAL ATOMIC ENERGY AGENCY st IAEA Fusion Energy Conference Chengdu, China, 6 - October 6 IAEA-CN-9/EX/- THE PERFORMANCE OF IMPROVED H-MODES AT ASDEX UPGRADE AND PROJECTION TO A.C.C. SIPS,

More information

Plan of Off-axis Neutral Beam Injector in KSTAR

Plan of Off-axis Neutral Beam Injector in KSTAR KSTAR conference, Feb 25-27, 2015, Daejeon (DCC), Korea Plan of Off-axis Neutral Beam Injector in KSTAR Feb. 26, 2015 DCC, Daejeon, Korea Young-soon Bae a L. Terzolo a, K.S. Lee a, H.K. Kim a, H.L. Yang

More information

Spatial, temporal and spectral structure of the turbulence-flow interaction at the L-H transition

Spatial, temporal and spectral structure of the turbulence-flow interaction at the L-H transition Spatial, temporal and spectral structure of the turbulence-flow interaction at the L-H transition T Estrada 1, E. Ascasíbar 1, E. Blanco 1, A. Cappa 1, P. H. Diamond 2, T. Happel 3, C. Hidalgo 1, M. Liniers

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

Supported by. Suppression of TAE and GAE with HHFW heating

Supported by. Suppression of TAE and GAE with HHFW heating NSTX-U Supported by Suppression of TAE and GAE with HHFW heating Coll of Wm & Mary Columbia U CompX General Atomics FIU INL Johns Hopkins U LANL LLNL Lodestar MIT Lehigh U Nova Photonics ORNL PPPL Princeton

More information

Alfvén Cascade modes at high β in NSTX*

Alfvén Cascade modes at high β in NSTX* Supported by Office of Science Alfvén Cascade modes at high β in NSTX* College W&M Colorado Sch Mines Columbia U Comp-X FIU General Atomics INL Johns Hopkins U Lehigh U LANL LLNL Lodestar MIT Nova Photonics

More information

Spectroscopic Determination of the Internal Amplitude of Frequency Sweeping TAE

Spectroscopic Determination of the Internal Amplitude of Frequency Sweeping TAE EFDA JET PR(3)58 S.D. Pinches, H.L. Berk, M.P. Gryaznevich, S.E. Sharapov and JET EFDA contributors Spectroscopic Determination of the Internal Amplitude of Frequency Sweeping TAE . Spectroscopic Determination

More information

Benchmark of gyrokinetic, kinetic MHD and gyrofluid codes for the linear calculation of fast particle driven TAE dynamics

Benchmark of gyrokinetic, kinetic MHD and gyrofluid codes for the linear calculation of fast particle driven TAE dynamics ITR/P-34 Benchmark of gyrokinetic, kinetic MHD and gyrofluid codes for the linear calculation of fast particle driven TAE dynamics A.Könies,S.Briguglio 2,N.Gorelenkov 3,T.Fehér 4,M.Isaev 5,P.Lauber 4,A.Mishchenko,

More information