Overview of physics results from MAST towards ITER/DEMO and the MAST Upgrade

H. Meyer; I.G. Abel; R.J. Akers; A. Allan; S.Y. Allan; L.C. Appel; O. Asunta; M. Barnes; N.C. Barratt; N. Ben Ayed; J.W. Bradley; J. Canik; P. Cahyna; M. Cecconello; C.D. Challis; I.T. Chapman; D. Ciric; G. Colyer; N.J. Conway; M. Cox; B.J. Crowley; S.C. Cowley; G. Cunningham; A. Danilov; A. Darke; M.F.M. De Bock; G. De Temmerman; R.O. Dendy; P. Denner; D. Dickinson; A.Y. Dnestrovsky; Y. Dnestrovsky; M.D. Driscoll; B. Dudson; D. Dunai; M. Dunstan; P. Dura; S. Elmore; A.R. Field; G. Fishpool; S. Freethy; W. Fundamenski; L. Garzotti; Y.C. Ghim; K.J. Gibson; M.P. Gryaznevich; J. Harrison; E. Havlíčková; N.C. Hawkes; W.W. Heidbrink; T.C. Hender; E. Highcock; D. Higgins; P. Hill; B. Hnat; M.J. Hole; J. Horáček; D.F. Howell; K. Imada; O. Jones; E. Kaveeva; D. Keeling; A. Kirk; M. Kočan; R.J. Lake; M. Lehnen; H.J. Leggate; Y. Liang; M.K. Lilley; S.W. Lisgo; Y.Q. Liu; B. Lloyd; G.P. Maddison; J. Mailloux; R. Martin; G.J. McArdle; K.G. McClements; B. McMillan; C. Michael; F. Militello; P. Molchanov; S. Mordijck; T. Morgan; A.W. Morris; D.G. Muir; E. Nardon; V. Naulin; G. Naylor; A.H. Nielsen; M.R. O'Brien; T. O'Gorman; S. Pamela; F.I. Parra; A. Patel; S.D. Pinches; M.N. Price; C.M. Roach; J.R. Robinson; M. Romanelli; V. Rozhansky; S. Saarelma; S. Sangaroon; A. Saveliev; R. Scannell; J. Seidl; S.E. Sharapov; A.A. Schekochihin; V. Shevchenko; S. Shibaev; D. Stork; J. Storrs; A. Sykes; G.J. Tallents; P. Tamain; D. Taylor; D. Temple; N. Thomas-Davies; A. Thornton; M.R. Turnyanskiy; M. Valovič; R.G.L. Vann; E. Verwichte; P. Voskoboynikov; G. Voss; S.E.V. Warder; H.R. Wilson; I. Wodniak; S. Zoletnik; R. Zagôrski

doi:10.1088/0029-5515/53/10/104008

Overview of physics results from MAST towards ITER/DEMO and the MAST Upgrade

H. Meyer, I.G. Abel, R.J. Akers, A. Allan, S.Y. Allan, L.C. Appel, O. Asunta, M. Barnes, N.C. Barratt, N. Ben Ayed, J.W. Bradley, J. Canik, P. Cahyna, M. Cecconello, C.D. Challis, I.T. Chapman, D. Ciric, G. Colyer, N.J. Conway, M. CoxB.J. Crowley, S.C. Cowley, G. Cunningham, A. Danilov, A. Darke, M.F.M. De Bock, G. De Temmerman, R.O. Dendy, P. Denner, D. Dickinson, A.Y. Dnestrovsky, Y. Dnestrovsky, M.D. Driscoll, B. Dudson, D. Dunai, M. Dunstan, P. Dura, S. Elmore, A.R. Field, G. Fishpool, S. Freethy, W. Fundamenski, L. Garzotti, Y.C. Ghim, K.J. Gibson, M.P. Gryaznevich, J. Harrison, E. Havlíčková, N.C. Hawkes, W.W. Heidbrink, T.C. Hender, E. Highcock, D. Higgins, P. Hill, B. Hnat, M.J. Hole, J. Horáček, D.F. Howell, K. Imada, O. Jones, E. Kaveeva, D. Keeling, A. Kirk, M. Kočan, R.J. Lake, M. Lehnen, H.J. Leggate, Y. Liang, M.K. Lilley, S.W. Lisgo, Y.Q. Liu, B. Lloyd, G.P. Maddison, J. Mailloux, R. Martin, G.J. McArdle, K.G. McClements, B. McMillan, C. Michael, F. Militello, P. Molchanov, S. Mordijck, T. Morgan, A.W. Morris, D.G. Muir, E. Nardon, V. Naulin, G. Naylor, A.H. Nielsen, M.R. O'Brien, T. O'Gorman, S. Pamela, F.I. Parra, A. Patel, S.D. Pinches, M.N. Price, C.M. Roach, J.R. Robinson, M. Romanelli, V. Rozhansky, S. Saarelma, S. Sangaroon, A. Saveliev, R. Scannell, J. Seidl, S.E. Sharapov, A.A. Schekochihin, V. Shevchenko, S. Shibaev, D. Stork, J. Storrs, A. Sykes, G.J. Tallents, P. Tamain, D. Taylor, D. Temple, N. Thomas-Davies, A. Thornton, M.R. Turnyanskiy, M. Valovič, R.G.L. Vann, E. Verwichte, P. Voskoboynikov, G. Voss, S.E.V. Warder, H.R. Wilson, I. Wodniak, S. Zoletnik, R. Zagôrski

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

New diagnostic, modelling and plant capability on the Mega Ampère Spherical Tokamak (MAST) have delivered important results in key areas for ITER/DEMO and the upcoming MAST Upgrade, a step towards future ST devices on the path to fusion currently under procurement. Micro-stability analysis of the pedestal highlights the potential roles of micro-tearing modes and kinetic ballooning modes for the pedestal formation. Mitigation of edge localized modes (ELM) using resonant magnetic perturbation has been demonstrated for toroidal mode numbers n = 3, 4, 6 with an ELM frequency increase by up to a factor of 9, compatible with pellet fuelling. The peak heat flux of mitigated and natural ELMs follows the same linear trend with ELM energy loss and the first ELM-resolved T measurements in the divertor region are shown. Measurements of flow shear and turbulence dynamics during L-H transitions show filaments erupting from the plasma edge whilst the full flow shear is still present. Off-axis neutral beam injection helps to strongly reduce the redistribution of fast-ions due to fishbone modes when compared to on-axis injection. Low-k ion-scale turbulence has been measured in L-mode and compared to global gyro-kinetic simulations. A statistical analysis of principal turbulence time scales shows them to be of comparable magnitude and reasonably correlated with turbulence decorrelation time. T inside the island of a neoclassical tearing mode allow the analysis of the island evolution without assuming specific models for the heat flux. Other results include the discrepancy of the current profile evolution during the current ramp-up with solutions of the poloidal field diffusion equation, studies of the anomalous Doppler resonance compressional Alfvén eigenmodes, disruption mitigation studies and modelling of the new divertor design for MAST Upgrade. The novel 3D electron Bernstein synthetic imaging shows promising first data sensitive to the edge current profile and flows.

Original language	English
Article number	104008
Journal	Nuclear Fusion
Volume	53
Issue number	10
DOIs	https://doi.org/10.1088/0029-5515/53/10/104008
Publication status	Published - 1 Oct 2013

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10.1088/0029-5515/53/10/104008

Cite this

Meyer, H., Abel, I. G., Akers, R. J., Allan, A., Allan, S. Y., Appel, L. C., Asunta, O., Barnes, M., Barratt, N. C., Ben Ayed, N., Bradley, J. W., Canik, J., Cahyna, P., Cecconello, M., Challis, C. D., Chapman, I. T., Ciric, D., Colyer, G., Conway, N. J., ... Zagôrski, R. (2013). Overview of physics results from MAST towards ITER/DEMO and the MAST Upgrade. Nuclear Fusion, 53(10), Article 104008. https://doi.org/10.1088/0029-5515/53/10/104008

@article{8d2dff38aa6448098e325682c8b30fa5,

title = "Overview of physics results from MAST towards ITER/DEMO and the MAST Upgrade",

abstract = "New diagnostic, modelling and plant capability on the Mega Amp{\`e}re Spherical Tokamak (MAST) have delivered important results in key areas for ITER/DEMO and the upcoming MAST Upgrade, a step towards future ST devices on the path to fusion currently under procurement. Micro-stability analysis of the pedestal highlights the potential roles of micro-tearing modes and kinetic ballooning modes for the pedestal formation. Mitigation of edge localized modes (ELM) using resonant magnetic perturbation has been demonstrated for toroidal mode numbers n = 3, 4, 6 with an ELM frequency increase by up to a factor of 9, compatible with pellet fuelling. The peak heat flux of mitigated and natural ELMs follows the same linear trend with ELM energy loss and the first ELM-resolved T measurements in the divertor region are shown. Measurements of flow shear and turbulence dynamics during L-H transitions show filaments erupting from the plasma edge whilst the full flow shear is still present. Off-axis neutral beam injection helps to strongly reduce the redistribution of fast-ions due to fishbone modes when compared to on-axis injection. Low-k ion-scale turbulence has been measured in L-mode and compared to global gyro-kinetic simulations. A statistical analysis of principal turbulence time scales shows them to be of comparable magnitude and reasonably correlated with turbulence decorrelation time. T inside the island of a neoclassical tearing mode allow the analysis of the island evolution without assuming specific models for the heat flux. Other results include the discrepancy of the current profile evolution during the current ramp-up with solutions of the poloidal field diffusion equation, studies of the anomalous Doppler resonance compressional Alfv{\'e}n eigenmodes, disruption mitigation studies and modelling of the new divertor design for MAST Upgrade. The novel 3D electron Bernstein synthetic imaging shows promising first data sensitive to the edge current profile and flows.",

author = "H. Meyer and I.G. Abel and R.J. Akers and A. Allan and S.Y. Allan and L.C. Appel and O. Asunta and M. Barnes and N.C. Barratt and {Ben Ayed}, N. and J.W. Bradley and J. Canik and P. Cahyna and M. Cecconello and C.D. Challis and I.T. Chapman and D. Ciric and G. Colyer and N.J. Conway and M. Cox and B.J. Crowley and S.C. Cowley and G. Cunningham and A. Danilov and A. Darke and {De Bock}, M.F.M. and {De Temmerman}, G. and R.O. Dendy and P. Denner and D. Dickinson and A.Y. Dnestrovsky and Y. Dnestrovsky and M.D. Driscoll and B. Dudson and D. Dunai and M. Dunstan and P. Dura and S. Elmore and A.R. Field and G. Fishpool and S. Freethy and W. Fundamenski and L. Garzotti and Y.C. Ghim and K.J. Gibson and M.P. Gryaznevich and J. Harrison and E. Havl{\'i}{\v c}kov{\'a} and N.C. Hawkes and W.W. Heidbrink and T.C. Hender and E. Highcock and D. Higgins and P. Hill and B. Hnat and M.J. Hole and J. Hor{\'a}{\v c}ek and D.F. Howell and K. Imada and O. Jones and E. Kaveeva and D. Keeling and A. Kirk and M. Ko{\v c}an and R.J. Lake and M. Lehnen and H.J. Leggate and Y. Liang and M.K. Lilley and S.W. Lisgo and Y.Q. Liu and B. Lloyd and G.P. Maddison and J. Mailloux and R. Martin and G.J. McArdle and K.G. McClements and B. McMillan and C. Michael and F. Militello and P. Molchanov and S. Mordijck and T. Morgan and A.W. Morris and D.G. Muir and E. Nardon and V. Naulin and G. Naylor and A.H. Nielsen and M.R. O'Brien and T. O'Gorman and S. Pamela and F.I. Parra and A. Patel and S.D. Pinches and M.N. Price and C.M. Roach and J.R. Robinson and M. Romanelli and V. Rozhansky and S. Saarelma and S. Sangaroon and A. Saveliev and R. Scannell and J. Seidl and S.E. Sharapov and A.A. Schekochihin and V. Shevchenko and S. Shibaev and D. Stork and J. Storrs and A. Sykes and G.J. Tallents and P. Tamain and D. Taylor and D. Temple and N. Thomas-Davies and A. Thornton and M.R. Turnyanskiy and M. Valovi{\v c} and R.G.L. Vann and E. Verwichte and P. Voskoboynikov and G. Voss and S.E.V. Warder and H.R. Wilson and I. Wodniak and S. Zoletnik and R. Zag{\^o}rski",

year = "2013",

month = oct,

day = "1",

doi = "10.1088/0029-5515/53/10/104008",

language = "English",

volume = "53",

journal = "Nuclear Fusion",

issn = "0029-5515",

publisher = "IOP Publishing",

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Meyer, H, Abel, IG, Akers, RJ, Allan, A, Allan, SY, Appel, LC, Asunta, O, Barnes, M, Barratt, NC, Ben Ayed, N, Bradley, JW, Canik, J, Cahyna, P, Cecconello, M, Challis, CD, Chapman, IT, Ciric, D, Colyer, G, Conway, NJ, Cox, M, Crowley, BJ, Cowley, SC, Cunningham, G, Danilov, A, Darke, A, De Bock, MFM, De Temmerman, G, Dendy, RO, Denner, P, Dickinson, D, Dnestrovsky, AY, Dnestrovsky, Y, Driscoll, MD, Dudson, B, Dunai, D, Dunstan, M, Dura, P, Elmore, S, Field, AR, Fishpool, G, Freethy, S, Fundamenski, W, Garzotti, L, Ghim, YC, Gibson, KJ, Gryaznevich, MP, Harrison, J, Havlíčková, E, Hawkes, NC, Heidbrink, WW, Hender, TC, Highcock, E, Higgins, D, Hill, P, Hnat, B, Hole, MJ, Horáček, J, Howell, DF, Imada, K, Jones, O, Kaveeva, E, Keeling, D, Kirk, A, Kočan, M, Lake, RJ, Lehnen, M, Leggate, HJ, Liang, Y, Lilley, MK, Lisgo, SW, Liu, YQ, Lloyd, B, Maddison, GP, Mailloux, J, Martin, R, McArdle, GJ, McClements, KG, McMillan, B, Michael, C, Militello, F, Molchanov, P, Mordijck, S, Morgan, T, Morris, AW, Muir, DG, Nardon, E, Naulin, V, Naylor, G, Nielsen, AH, O'Brien, MR, O'Gorman, T, Pamela, S, Parra, FI, Patel, A, Pinches, SD, Price, MN, Roach, CM, Robinson, JR, Romanelli, M, Rozhansky, V, Saarelma, S, Sangaroon, S, Saveliev, A, Scannell, R, Seidl, J, Sharapov, SE, Schekochihin, AA, Shevchenko, V, Shibaev, S, Stork, D, Storrs, J, Sykes, A, Tallents, GJ, Tamain, P, Taylor, D, Temple, D, Thomas-Davies, N, Thornton, A, Turnyanskiy, MR, Valovič, M, Vann, RGL, Verwichte, E, Voskoboynikov, P, Voss, G, Warder, SEV, Wilson, HR, Wodniak, I, Zoletnik, S & Zagôrski, R 2013, 'Overview of physics results from MAST towards ITER/DEMO and the MAST Upgrade', Nuclear Fusion, vol. 53, no. 10, 104008. https://doi.org/10.1088/0029-5515/53/10/104008

TY - JOUR

T1 - Overview of physics results from MAST towards ITER/DEMO and the MAST Upgrade

AU - Meyer, H.

AU - Abel, I.G.

AU - Akers, R.J.

AU - Allan, A.

AU - Allan, S.Y.

AU - Appel, L.C.

AU - Asunta, O.

AU - Barnes, M.

AU - Barratt, N.C.

AU - Ben Ayed, N.

AU - Bradley, J.W.

AU - Canik, J.

AU - Cahyna, P.

AU - Cecconello, M.

AU - Challis, C.D.

AU - Chapman, I.T.

AU - Ciric, D.

AU - Colyer, G.

AU - Conway, N.J.

AU - Cox, M.

AU - Crowley, B.J.

AU - Cowley, S.C.

AU - Cunningham, G.

AU - Danilov, A.

AU - Darke, A.

AU - De Bock, M.F.M.

AU - De Temmerman, G.

AU - Dendy, R.O.

AU - Denner, P.

AU - Dickinson, D.

AU - Dnestrovsky, A.Y.

AU - Dnestrovsky, Y.

AU - Driscoll, M.D.

AU - Dudson, B.

AU - Dunai, D.

AU - Dunstan, M.

AU - Dura, P.

AU - Elmore, S.

AU - Field, A.R.

AU - Fishpool, G.

AU - Freethy, S.

AU - Fundamenski, W.

AU - Garzotti, L.

AU - Ghim, Y.C.

AU - Gibson, K.J.

AU - Gryaznevich, M.P.

AU - Harrison, J.

AU - Havlíčková, E.

AU - Hawkes, N.C.

AU - Heidbrink, W.W.

AU - Hender, T.C.

AU - Highcock, E.

AU - Higgins, D.

AU - Hill, P.

AU - Hnat, B.

AU - Hole, M.J.

AU - Horáček, J.

AU - Howell, D.F.

AU - Imada, K.

AU - Jones, O.

AU - Kaveeva, E.

AU - Keeling, D.

AU - Kirk, A.

AU - Kočan, M.

AU - Lake, R.J.

AU - Lehnen, M.

AU - Leggate, H.J.

AU - Liang, Y.

AU - Lilley, M.K.

AU - Lisgo, S.W.

AU - Liu, Y.Q.

AU - Lloyd, B.

AU - Maddison, G.P.

AU - Mailloux, J.

AU - Martin, R.

AU - McArdle, G.J.

AU - McClements, K.G.

AU - McMillan, B.

AU - Michael, C.

AU - Militello, F.

AU - Molchanov, P.

AU - Mordijck, S.

AU - Morgan, T.

AU - Morris, A.W.

AU - Muir, D.G.

AU - Nardon, E.

AU - Naulin, V.

AU - Naylor, G.

AU - Nielsen, A.H.

AU - O'Brien, M.R.

AU - O'Gorman, T.

AU - Pamela, S.

AU - Parra, F.I.

AU - Patel, A.

AU - Pinches, S.D.

AU - Price, M.N.

AU - Roach, C.M.

AU - Robinson, J.R.

AU - Romanelli, M.

AU - Rozhansky, V.

AU - Saarelma, S.

AU - Sangaroon, S.

AU - Saveliev, A.

AU - Scannell, R.

AU - Seidl, J.

AU - Sharapov, S.E.

AU - Schekochihin, A.A.

AU - Shevchenko, V.

AU - Shibaev, S.

AU - Stork, D.

AU - Storrs, J.

AU - Sykes, A.

AU - Tallents, G.J.

AU - Tamain, P.

AU - Taylor, D.

AU - Temple, D.

AU - Thomas-Davies, N.

AU - Thornton, A.

AU - Turnyanskiy, M.R.

AU - Valovič, M.

AU - Vann, R.G.L.

AU - Verwichte, E.

AU - Voskoboynikov, P.

AU - Voss, G.

AU - Warder, S.E.V.

AU - Wilson, H.R.

AU - Wodniak, I.

AU - Zoletnik, S.

AU - Zagôrski, R.

PY - 2013/10/1

Y1 - 2013/10/1

N2 - New diagnostic, modelling and plant capability on the Mega Ampère Spherical Tokamak (MAST) have delivered important results in key areas for ITER/DEMO and the upcoming MAST Upgrade, a step towards future ST devices on the path to fusion currently under procurement. Micro-stability analysis of the pedestal highlights the potential roles of micro-tearing modes and kinetic ballooning modes for the pedestal formation. Mitigation of edge localized modes (ELM) using resonant magnetic perturbation has been demonstrated for toroidal mode numbers n = 3, 4, 6 with an ELM frequency increase by up to a factor of 9, compatible with pellet fuelling. The peak heat flux of mitigated and natural ELMs follows the same linear trend with ELM energy loss and the first ELM-resolved T measurements in the divertor region are shown. Measurements of flow shear and turbulence dynamics during L-H transitions show filaments erupting from the plasma edge whilst the full flow shear is still present. Off-axis neutral beam injection helps to strongly reduce the redistribution of fast-ions due to fishbone modes when compared to on-axis injection. Low-k ion-scale turbulence has been measured in L-mode and compared to global gyro-kinetic simulations. A statistical analysis of principal turbulence time scales shows them to be of comparable magnitude and reasonably correlated with turbulence decorrelation time. T inside the island of a neoclassical tearing mode allow the analysis of the island evolution without assuming specific models for the heat flux. Other results include the discrepancy of the current profile evolution during the current ramp-up with solutions of the poloidal field diffusion equation, studies of the anomalous Doppler resonance compressional Alfvén eigenmodes, disruption mitigation studies and modelling of the new divertor design for MAST Upgrade. The novel 3D electron Bernstein synthetic imaging shows promising first data sensitive to the edge current profile and flows.

AB - New diagnostic, modelling and plant capability on the Mega Ampère Spherical Tokamak (MAST) have delivered important results in key areas for ITER/DEMO and the upcoming MAST Upgrade, a step towards future ST devices on the path to fusion currently under procurement. Micro-stability analysis of the pedestal highlights the potential roles of micro-tearing modes and kinetic ballooning modes for the pedestal formation. Mitigation of edge localized modes (ELM) using resonant magnetic perturbation has been demonstrated for toroidal mode numbers n = 3, 4, 6 with an ELM frequency increase by up to a factor of 9, compatible with pellet fuelling. The peak heat flux of mitigated and natural ELMs follows the same linear trend with ELM energy loss and the first ELM-resolved T measurements in the divertor region are shown. Measurements of flow shear and turbulence dynamics during L-H transitions show filaments erupting from the plasma edge whilst the full flow shear is still present. Off-axis neutral beam injection helps to strongly reduce the redistribution of fast-ions due to fishbone modes when compared to on-axis injection. Low-k ion-scale turbulence has been measured in L-mode and compared to global gyro-kinetic simulations. A statistical analysis of principal turbulence time scales shows them to be of comparable magnitude and reasonably correlated with turbulence decorrelation time. T inside the island of a neoclassical tearing mode allow the analysis of the island evolution without assuming specific models for the heat flux. Other results include the discrepancy of the current profile evolution during the current ramp-up with solutions of the poloidal field diffusion equation, studies of the anomalous Doppler resonance compressional Alfvén eigenmodes, disruption mitigation studies and modelling of the new divertor design for MAST Upgrade. The novel 3D electron Bernstein synthetic imaging shows promising first data sensitive to the edge current profile and flows.

UR - http://www.scopus.com/inward/record.url?scp=84884890874&partnerID=8YFLogxK

U2 - 10.1088/0029-5515/53/10/104008

DO - 10.1088/0029-5515/53/10/104008

M3 - Article

AN - SCOPUS:84884890874

SN - 0029-5515

VL - 53

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 10

M1 - 104008

ER -

Overview of physics results from MAST towards ITER/DEMO and the MAST Upgrade

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SAMI (Synthetic Aperture Microwave Imaging): Measuring tokamak plasma current using electron Bernstein wave emission

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Overview of physics results from MAST towards ITER/DEMO and the MAST Upgrade

Abstract

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SAMI (Synthetic Aperture Microwave Imaging): Measuring tokamak plasma current using electron Bernstein wave emission

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