Presentation is loading. Please wait.

Presentation is loading. Please wait.

Centre de Recherches en Physique des Plasmas EPFL, Lausanne, Switzerland S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October.

Published byKasandra Hayles Modified over 9 years ago

Similar presentations

Presentation on theme: "Centre de Recherches en Physique des Plasmas EPFL, Lausanne, Switzerland S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October."— Presentation transcript:

1 Centre de Recherches en Physique des Plasmas EPFL, Lausanne, Switzerland S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 The science program of the TCV tokamak: exploring fusion reactor and power plant concepts S. Coda for the TCV team* *including collaborating institutions: S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014

2 Overview of TCV science 2 Scientific mission of the TCV program Present and future capabilities of TCV Scientific results  Heat exhaust: conventional and advanced concepts  H-mode threshold  MHD and integrated instability control  Turbulence and zonal flows  Turbulence-driven spontaneous rotation  New insights into confinement and a new I-mode Summary and outlook Outline

3 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 3 Investigating fusion science and control techniques for reactor and power plant  versatile control tools  wide range of scenarios and parameters Furthering high-temperature plasma science  agile program to respond to new ideas and theoretical challenges TCV mission Run from 2015 partly as a European facility within Medium-Size Tokamak (MST) Task Force in EUROfusion program

4 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 4 TCV R/a = 0.88/0.25 m I p < 1 MA B T < 1.54 T n e = 1-20  10 19 m -3  < 2.8 -0.6 <  < 0.9 graphite wall

5 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 5 TCV 2014: 2.5 MW ECRH power, 6 steerable launchers ×4 ×2

6 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 6 2014: 2.5 MW ECRH 2015: + 1 MW NBI   N =2.4, T e ~T i =2.5 keV + diagnostic upgrades 2016: 4 MW ECRH 2018: 5 MW ECRH   N =2.8 2014: 2.5 MW ECRH 2015: + 1 MW NBI   N =2.4, T e ~T i =2.5 keV + diagnostic upgrades 2016: 4 MW ECRH 2018: 5 MW ECRH   N =2.8 TCV NBI 20??:additional NBI, vessel modifications to test exhaust concepts, ? see also A. Fasoli et al, FIP/P7-7 (Friday morning)

7 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 7 Scientific mission of the TCV program Present and future capabilities of TCV Scientific results  Heat exhaust: conventional and advanced concepts  H-mode threshold  MHD and integrated instability control  Turbulence and zonal flows  Turbulence-driven spontaneous rotation  New insights into confinement and a new I-mode Summary and outlook Outline

8 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 8 Snowflake vs conventional divertor: reduced peak heat flux, enhanced transport into private region SF- SF+

9 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 9 perfect SF Power channeled to extra strike points is substantial even for " imperfect " SF aa Infrared Langmuir probes L-mode H. Reimerdes et al, PPCF 55, 124027 (2013)

10 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 10 Simulations greatly underestimate transport into private SF region measurements EMC 3- EIRENE simulations ExB drifts are a good candidate to explain extra transport T. Lunt et al, PPCF 56, 035009 (2014) see also B.P. Duval et al, EX/P3-56 (Wednesday morning)

11 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 11 SOL not broadened in today’s devices but could broaden in DEMO-sized SF TCV L-mode DEMO H-mode SND SF SND

12 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 12 Further exotic shapes prototyped in TCV for future studies X-divertor (high flux expansion)Triple-null W. Vijvers et al, 55 th APS, PP8.00047 (2013)

13 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 13 Scientific mission of the TCV program Present and future capabilities of TCV Scientific results  Heat exhaust: conventional and advanced concepts  H-mode threshold  MHD and integrated instability control  Turbulence and zonal flows  Turbulence-driven spontaneous rotation  New insights into confinement and a new I-mode Summary and outlook Outline

14 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 14 Ohmic H-mode power threshold in hydrogen is lower than expected favorable projection to early, non-nuclear phase of ITER R. Behn et al, submitted PPCF (2014)

15 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 15 Ohmic H-mode threshold increases with divertor leg length Scaling refinements required by ITER Y. Martin et al, H-mode workshop (2013), to be published in NF (2014)

16 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 16 Ohmic H-mode threshold is independent of dI p /dt Scaling refinements required by ITER Y. Martin et al, H-mode workshop (2013), to be published in NF (2014)

17 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 17 Scientific mission of the TCV program Present and future capabilities of TCV Scientific results  Heat exhaust: conventional and advanced concepts  H-mode threshold  MHD and integrated instability control  Turbulence and zonal flows  Turbulence-driven spontaneous rotation  New insights into confinement and a new I-mode Summary and outlook Outline

18 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 18 Integrated control New r/t version of equilibrium reconstruction code LIUQE runs in 200  s  used for new generalized shape/position controller  used to improve NTM control by ECRH through r/t knowledge of rational surface location J.-M. Moret et al, accepted Fus. Eng. Design (2014)

19 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 19 Sinusoidal dither improves reliability of NTM control, in both pre-emption and stabilization schemes mode quenched as launcher hits rational surface T.P. Goodman et al, EC-18 (2014)

20 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 20 MHD and integrated control: additional work Study of neoclassical toroidal viscosity and interplay with sawtoothless NTM excitation and spontaneous rotation see also S. Nowak et al, EX/P2-54 (Tuesday afternoon)

21 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 21 Scientific mission of the TCV program Present and future capabilities of TCV Scientific results  Heat exhaust: conventional and advanced concepts  H-mode threshold  MHD and integrated instability control  Turbulence and zonal flows  Turbulence-driven spontaneous rotation  New insights into confinement and a new I-mode Summary and outlook Outline

22 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 22 Edge triangularity (which affects global  E ) also influences core turbulence A conundrum:  core triangularity ~0  accordingly, flux-tube gyrokinetics find no core  effects  core gradients independent of   global nonlinear simulations + synthetic diagnostics hold the key

23 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 23 Geodesic acoustic mode observed at low q as a global eigenmode C.A. de Meijere et al, PPCF 56, 072001 (2014)  n e by phase contrast imaging

24 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 24 GAM seen simultaneously by four diagnostics Phase contrast imaging (  n e ), correlation ECE (  T e ), Doppler backscattering (flow), magnetics (  B) All quantities ( , k, location, etc.) derived through multi-diagnostic coverage C.A. de Meijere et al, PPCF 56, 072001 (2014) see also L. Porte et al, EX/P3-57 (Wednesday morning)

25 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 25 GAM structure Magnetics confirm axisymmetry and find predicted m=2 structure Spatially extended eigenmode or dispersive mode depending on parameters (esp. safety factor)

26 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 26 Scientific mission of the TCV program Present and future capabilities of TCV Scientific results  Heat exhaust: conventional and advanced concepts  H-mode threshold  MHD and integrated instability control  Turbulence and zonal flows  Turbulence-driven spontaneous rotation  New insights into confinement and a new I-mode Summary and outlook Outline

27 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 27 A new theoretical proposal Testable on TCV: predicts linear dependence of toroidal rotation on X-point major radius, with sign inversion for sufficiently outward location Edge rotation driven by turbulence and co/counter-ion orbit asymmetry

28 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 28 T. Stoltzfus-Dueck, 56 th APS invited (2014) Predicted turbulence-driven edge rotation confirmed in TCV

29 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 29 Scientific mission of the TCV program Present and future capabilities of TCV Scientific results  Heat exhaust: conventional and advanced concepts  H-mode threshold  MHD and integrated instability control  Turbulence and zonal flows  Turbulence-driven spontaneous rotation  New insights into confinement and a new I-mode Summary and outlook Outline

30 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 30 Study of edge role in global confinement: e.g. I p scan with high-resolution measurements I p scan

31 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 31 non-stiff edge profiles gradient is uniform,  I p stiff core profiles: uniform, I p -independent gradient scale length Global confinement scalings largely regulated by extended edge region (  ~0.8-1), not by plasma boundary O. Sauter et al, PoP 21, 055906 (2014) Similar dependence on density, power (standard scalings), triangularity see also A. Merle et al, EX/P3-55 (Wednesday morning)

32 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 32 Density limit Density rise causes positive feedback loop: density peaking, core cooling, sawtooth stabilization  ultimately 2/1 mode and disruption n max is close to Greenwald density at low current, well below at higher current see also N. Kirneva et al, EX/P3-54 (Wednesday morning)

33 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 33 IN-mode: raised edge density gradient, L-mode-like edge temperature Obtained by early gas puffing or by marginal entry into H-mode followed by H-L transition (low internal-inductance trajectories) IN-mode L-mode IN-mode L-mode

34 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 34 see also A. Merle et al, EX/P3-55 (Wednesday morning) IN-mode: H-mode-like confinement H-factor profile

35 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 35 Enhanced transport to private region in snowflake greatly underestimated by modeling thus far Lower than expected H-mode threshold in hydrogen Improved MHD control through real-time equilibrium reconstruction Complete multi-diagnostic characterization of GAM Confirmation of new theory of turbulence-driven edge rotation Determination of regulatory role of edge plasma in global confinement New high-particle-confinement regime (IN-mode) discovered Summary of highlights

36 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 36 Europe-wide call for proposals in November for TCV and ASDEX Upgrade in 2015 The immediate future International collaborations always welcome

37 S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October 2014 Overview of TCV science 37 TCVTCV  EX/P2-54: S. Nowak, “(N)TM onset by central EC power deposition in FTU and TCV tokamaks”, Tue pm  EX/P3-54: N. Kirneva, “High density regime in Ohmic TCV discharges with positive and negative triangularity”, Wed am  EX/P3-55: A. Merle, “From edge non-stiffness to improved IN-mode: a new perspective on global tokamak radial transport”, Wed am  EX/P3-56: B.P. Duval, “Progress in snowflake divertor studies in TCV”, Wed am  EX/P3-57: L. Porte, “Multi-diagnostic study of core turbulence and geodesic acoustic modes in the TCV tokamak”, Wed am  FIP/P7-7: A. Fasoli, “TCV heating and in-vessel upgrades for addressing DEMO physics issues”, Fri am Fusion technologyFusion technology  FIP/1-4Ra: B. Stepanov, “Summary of the test results of ITER conductors in SULTAN”, Mon pm Basic plasma physicsBasic plasma physics  EX/P3-59: I. Furno, “Basic investigations of turbulence and interactions with plasma and suprathermal ions in the TORPEX device with open and closed field lines”, Wed am TheoryTheory  TH/3-2: P. Ricci, “First-principle theory-based scaling of the SOL width in limited tokamak plasmas, experimental validation, and implications for the ITER start-up”, Wed pm  TH/P7-13: W. Cooper, “Equilibrium and fast particle confinement in 3D tokamaks with toroidal rotation”, Fri am CRPP contributions

Download ppt "Centre de Recherches en Physique des Plasmas EPFL, Lausanne, Switzerland S. Coda, 25 th IAEA Fusion Energy Conference, OV/4-2, St. Petersburg, 14 October."

Similar presentations

Progress and Plans on Magnetic Reconnection for CMSO For NSF Site-Visit for CMSO May1-2, 2005 1. Experimental progress [M. Yamada] -Findings on two-fluid.

Progress and Plans on Magnetic Reconnection for CMSO For NSF Site-Visit for CMSO May1-2, Experimental progress [M. Yamada] -Findings on two-fluid.
Glenn Bateman Lehigh University Physics Department

Glenn Bateman Lehigh University Physics Department
The Swiss Association vision for the period 2012-2020 Presented by M. Q. Tran on behalf of the CRPP.

The Swiss Association vision for the period Presented by M. Q. Tran on behalf of the CRPP.
A. Kirk, 21 st IAEA Fusion Energy Conference, Chengdu, China, October 2006 Evolution of the pedestal on MAST and the implications for ELM power loadings.

A. Kirk, 21 st IAEA Fusion Energy Conference, Chengdu, China, October 2006 Evolution of the pedestal on MAST and the implications for ELM power loadings.
Density profile changes are the result of the profile consistency effect. K.Razumova The very important feature of tokamak plasma behavior is its abilities.

Density profile changes are the result of the profile consistency effect. K.Razumova The very important feature of tokamak plasma behavior is its abilities.
ELECTRON CYCLOTRON SYSTEM FOR KSTAR US-Korea Workshop Opportunities for Expanded Fusion Science and Technology Collaborations with the KSTAR Project Presented.

ELECTRON CYCLOTRON SYSTEM FOR KSTAR US-Korea Workshop Opportunities for Expanded Fusion Science and Technology Collaborations with the KSTAR Project Presented.
Reduced transport regions in rotating tokamak plasmas Michael Barnes University of Oxford Culham Centre for Fusion Energy Michael Barnes University of.

Reduced transport regions in rotating tokamak plasmas Michael Barnes University of Oxford Culham Centre for Fusion Energy Michael Barnes University of.
Centre de Recherches en Physique des Plasmas EPFL, Association Euratom-Fédération Suisse, Lausanne, Switzerland S. Coda, 23 rd IAEA Fusion Energy Conference,

Centre de Recherches en Physique des Plasmas EPFL, Association Euratom-Fédération Suisse, Lausanne, Switzerland S. Coda, 23 rd IAEA Fusion Energy Conference,
Paper O4.007, R. A. Pitts et al., 34th EPS Conference: 5 July 2007 Neoclassical and transport driven parallel SOL flows on TCV R. A. Pitts, J. Horacek.

Paper O4.007, R. A. Pitts et al., 34th EPS Conference: 5 July 2007 Neoclassical and transport driven parallel SOL flows on TCV R. A. Pitts, J. Horacek.
IAEA - FEC2004 // Vilamoura // 03.11.04 // EX/4-5 // A. Staebler – 1 – A. Staebler, A.C.C Sips, M. Brambilla, R. Bilato, R. Dux, O. Gruber, J. Hobirk,

IAEA - FEC2004 // Vilamoura // // EX/4-5 // A. Staebler – 1 – A. Staebler, A.C.C Sips, M. Brambilla, R. Bilato, R. Dux, O. Gruber, J. Hobirk,
S. Coda, 46 th APS-DPP meeting, Savannah, 19 Nov. 2004 S. Coda, 34 th EPS Conf. on Plasma Physics, Warsaw, 5 July 2007 S. Coda, MHD workshop, PPPL, 22.

S. Coda, 46 th APS-DPP meeting, Savannah, 19 Nov S. Coda, 34 th EPS Conf. on Plasma Physics, Warsaw, 5 July 2007 S. Coda, MHD workshop, PPPL, 22.
SUMMARY OF EXPERIMENTAL CORE TURBULENCE CHARACTERISTICS IN OH AND ECRH T-10 TOKAMAK PLASMAS V. Vershkov, L.G. Eliseev, S.A. Grashin. A.V. Melnikov, D.A.

SUMMARY OF EXPERIMENTAL CORE TURBULENCE CHARACTERISTICS IN OH AND ECRH T-10 TOKAMAK PLASMAS V. Vershkov, L.G. Eliseev, S.A. Grashin. A.V. Melnikov, D.A.
Centre de Recherches en Physique des Plasmas EPFL, Association Euratom-Fédération Suisse, Lausanne, Switzerland S. Coda, U.S.-E.U. Joint Transport Task.

Centre de Recherches en Physique des Plasmas EPFL, Association Euratom-Fédération Suisse, Lausanne, Switzerland S. Coda, U.S.-E.U. Joint Transport Task.
D. Borba 1 21 st IAEA Fusion Energy Conference, Chengdu China 21 st October 2006 Excitation of Alfvén eigenmodes with sub-Alfvénic neutral beam ions in.

D. Borba 1 21 st IAEA Fusion Energy Conference, Chengdu China 21 st October 2006 Excitation of Alfvén eigenmodes with sub-Alfvénic neutral beam ions in.
A. HerrmannITPA - Toronto - 20061/19 Filaments in the SOL and their impact to the first wall EURATOM - IPP Association, Garching, Germany A. Herrmann,

A. HerrmannITPA - Toronto /19 Filaments in the SOL and their impact to the first wall EURATOM - IPP Association, Garching, Germany A. Herrmann,
Nils P. Basse Plasma Science and Fusion Center Massachusetts Institute of Technology Cambridge, MA 02139 USA ABB seminar November 7th, 2005 Measurements.

Nils P. Basse Plasma Science and Fusion Center Massachusetts Institute of Technology Cambridge, MA USA ABB seminar November 7th, 2005 Measurements.
H. Urano, H. Takenaga, T. Fujita, Y. Kamada, K. Kamiya, Y. Koide, N. Oyama, M. Yoshida and the JT-60 Team Japan Atomic Energy Agency JT-60U Tokamak: p.

H. Urano, H. Takenaga, T. Fujita, Y. Kamada, K. Kamiya, Y. Koide, N. Oyama, M. Yoshida and the JT-60 Team Japan Atomic Energy Agency JT-60U Tokamak: p.
10th ITPA TP Meeting - 24 April 2006 - A. Scarabosio 1 Spontaneous stationary toroidal rotation in the TCV tokamak A. Scarabosio, A. Bortolon, B. P. Duval,

10th ITPA TP Meeting - 24 April A. Scarabosio 1 Spontaneous stationary toroidal rotation in the TCV tokamak A. Scarabosio, A. Bortolon, B. P. Duval,
S. H. Müller, CRPP, SwitzerlandIAEA TM – Trieste – March 2-4, 2005 1 Basic Turbulence Studies on TORPEX and Challenges in the Theory-Experiment Comparison.

S. H. Müller, CRPP, SwitzerlandIAEA TM – Trieste – March 2-4, Basic Turbulence Studies on TORPEX and Challenges in the Theory-Experiment Comparison.
Advanced Tokamak Plasmas and the Fusion Ignition Research Experiment Charles Kessel Princeton Plasma Physics Laboratory Spring APS, Philadelphia, 4/5/2003.

Advanced Tokamak Plasmas and the Fusion Ignition Research Experiment Charles Kessel Princeton Plasma Physics Laboratory Spring APS, Philadelphia, 4/5/2003.

Similar presentations

Ads by Google