Overview of ASDEX upgrade results

H. Zohm, J. Adamek, C. Angioni, G. Antar, C. V. Atanasiu, M. Balden, W. Becker, K. Behler, K. Behringer, A. Bergmann, T. Bertoncelli, R. Bilato, V. Bobkov, J. Boom, A. Bottino, M. Brambilla, F. Braun, M. Brüdgam, A. Buhler, A. ChankinI. Classen, G. D. Conway, D. P. Coster, P. De Marné, R. D'Inca, R. Drube, R. Dux, T. Eich, K. Engelhardt, B. Esposito, H. U. Fahrbach, L. Fattorini, J. Fink, R. Fischer, A. Flaws, M. Foley, C. Forest, J. C. Fuchs, K. Gl, M. García Mũoz, M. Gemisic Adamov, L. Giannone, T. Görler, S. Gori, S. Da Graça, G. Granucci, H. Greuner, O. Gruber, A. Gude, S. Günter, G. Haas, D. Hahn, J. Harhausen, T. Hauff, B. Heinemann, A. Herrmann, N. Hicks, J. Hobirk, M. Hölzl, D. Holtum, C. Hopf, L. Horton, M. Huart, V. Igochine, M. Janzer, F. Jenko, A. Kallenbach, S. Kálvin, O. Kardaun, M. Kaufmann, M. Kick, A. Kirk, H. J. Klingshirn, G. Koscis, H. Kollotzek, C. Konz, K. Krieger, T. Kurki-Suonio, B. Kurzan, K. Lackner, P. T. Lang, B. Langer, P. Lauber, M. Laux, F. Leuterer, J. Likonen, L. Liu, A. Lohs, T. Lunt, A. Lyssoivan, C. F. Maggi, A. Manini, K. Mank, M. E. Manso, M. Mantsinen, M. Maraschek, P. Martin, M. Mayer, P. McCarthy, K. McCormick, H. Meister, F. Meo, P. Merkel, R. Merkel, V. Mertens, F. Merz, H. Meyer, A. Mlynek, F. Monaco, H. W. Müller, M. Münich, H. Murmann, G. Neu, R. Neu, J. Neuhauser, B. Nold, J. M. Noterdaeme, G. Pautasso, G. Pereverzev, E. Poli, S. Potzel, M. Püschel, T. Pütterich, R. Pugno, G. Raupp, M. Reich, B. Reiter, T. Ribeiro, R. Riedl, V. Rohde, J. Roth, M. Rott, F. Ryter, W. Sandmann, J. Santos, K. Sassenberg, P. Sauter, A. Scarabosio, G. Schall, H. B. Schilling, J. Schirmer, A. Schmid, K. Schmid, W. Schneider, G. Schramm, R. Schrittwieser, W. Schustereder, J. Schweinzer, S. Schweizer, B. Scott, U. Seidel, M. Sempf, F. Serra, M. Sertoli, M. Siccinio, A. Sigalov, A. Silva, A. C C Sips, E. Speth, A. Stäbler, R. Stadler, K. H. Steuer, J. Stober, B. Streibl, E. Strumberger, W. Suttrop, G. Tardini, C. Tichmann, W. Treutterer, C. Tröster, L. Urso, E. Vainonen-Ahlgren, P. Varela, L. Vermare, F. Volpe, D. Wagner, C. Wigger, M. Wischmeier, E. Wolfrum, E. Würsching, D. Yadikin, Q. Yu, D. Zasche, T. Zehetbauer, M. Zilker

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

ASDEX Upgrade was operated with a fully W-covered wall in 2007 and 2008. Stationary H-modes at the ITER target values and improved H-modes with H up to 1.2 were run without any boronization. The boundary conditions set by the full W wall (high enough ELM frequency, high enough central heating and low enough power density arriving at the target plates) require significant scenario development, but will apply to ITER as well. D retention has been reduced and stationary operation with saturated wall conditions has been found. Concerning confinement, impurity ion transport across the pedestal is neoclassical, explaining the strong inward pinch of high-Z impurities in between ELMs. In improved H-mode, the width of the temperature pedestal increases with heating power, consistent with a scaling. In the area of MHD instabilities, disruption mitigation experiments using massive Ne injection reach volume averaged values of the total electron density close to those required for runaway suppression in ITER. ECRH at the q = 2 surface was successfully applied to delay density limit disruptions. The characterization of fast particle losses due to MHD has shown the importance of different loss mechanisms for NTMs, TAEs and also beta-induced Alfven eigenmodes (BAEs). Specific studies addressing the first ITER operational phase show that O1 ECRH at the HFS assists reliable low-voltage breakdown. During ramp-up, additional heating can be used to vary li to fit within the ITER range. Confinement and power threshold in He are more favourable than in H, suggesting that He operation could allow us to assess H-mode operation in the non-nuclear phase of ITER operation.

Original languageEnglish
Article number104009
JournalNuclear Fusion
Volume49
Issue number10
DOIs
Publication statusPublished - 2009

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heating
impurities
ramps
electrical faults
low voltage
radiant flux density
retarding
injection
boundary conditions
scaling
thresholds
ions
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Nuclear and High Energy Physics

Cite this

Zohm, H., Adamek, J., Angioni, C., Antar, G., Atanasiu, C. V., Balden, M., ... Zilker, M. (2009). Overview of ASDEX upgrade results. Nuclear Fusion, 49(10), [104009]. https://doi.org/10.1088/0029-5515/49/10/104009

Overview of ASDEX upgrade results. / Zohm, H.; Adamek, J.; Angioni, C.; Antar, G.; Atanasiu, C. V.; Balden, M.; Becker, W.; Behler, K.; Behringer, K.; Bergmann, A.; Bertoncelli, T.; Bilato, R.; Bobkov, V.; Boom, J.; Bottino, A.; Brambilla, M.; Braun, F.; Brüdgam, M.; Buhler, A.; Chankin, A.; Classen, I.; Conway, G. D.; Coster, D. P.; De Marné, P.; D'Inca, R.; Drube, R.; Dux, R.; Eich, T.; Engelhardt, K.; Esposito, B.; Fahrbach, H. U.; Fattorini, L.; Fink, J.; Fischer, R.; Flaws, A.; Foley, M.; Forest, C.; Fuchs, J. C.; Gl, K.; Mũoz, M. García; Adamov, M. Gemisic; Giannone, L.; Görler, T.; Gori, S.; Graça, S. Da; Granucci, G.; Greuner, H.; Gruber, O.; Gude, A.; Günter, S.; Haas, G.; Hahn, D.; Harhausen, J.; Hauff, T.; Heinemann, B.; Herrmann, A.; Hicks, N.; Hobirk, J.; Hölzl, M.; Holtum, D.; Hopf, C.; Horton, L.; Huart, M.; Igochine, V.; Janzer, M.; Jenko, F.; Kallenbach, A.; Kálvin, S.; Kardaun, O.; Kaufmann, M.; Kick, M.; Kirk, A.; Klingshirn, H. J.; Koscis, G.; Kollotzek, H.; Konz, C.; Krieger, K.; Kurki-Suonio, T.; Kurzan, B.; Lackner, K.; Lang, P. T.; Langer, B.; Lauber, P.; Laux, M.; Leuterer, F.; Likonen, J.; Liu, L.; Lohs, A.; Lunt, T.; Lyssoivan, A.; Maggi, C. F.; Manini, A.; Mank, K.; Manso, M. E.; Mantsinen, M.; Maraschek, M.; Martin, P.; Mayer, M.; McCarthy, P.; McCormick, K.; Meister, H.; Meo, F.; Merkel, P.; Merkel, R.; Mertens, V.; Merz, F.; Meyer, H.; Mlynek, A.; Monaco, F.; Müller, H. W.; Münich, M.; Murmann, H.; Neu, G.; Neu, R.; Neuhauser, J.; Nold, B.; Noterdaeme, J. M.; Pautasso, G.; Pereverzev, G.; Poli, E.; Potzel, S.; Püschel, M.; Pütterich, T.; Pugno, R.; Raupp, G.; Reich, M.; Reiter, B.; Ribeiro, T.; Riedl, R.; Rohde, V.; Roth, J.; Rott, M.; Ryter, F.; Sandmann, W.; Santos, J.; Sassenberg, K.; Sauter, P.; Scarabosio, A.; Schall, G.; Schilling, H. B.; Schirmer, J.; Schmid, A.; Schmid, K.; Schneider, W.; Schramm, G.; Schrittwieser, R.; Schustereder, W.; Schweinzer, J.; Schweizer, S.; Scott, B.; Seidel, U.; Sempf, M.; Serra, F.; Sertoli, M.; Siccinio, M.; Sigalov, A.; Silva, A.; Sips, A. C C; Speth, E.; Stäbler, A.; Stadler, R.; Steuer, K. H.; Stober, J.; Streibl, B.; Strumberger, E.; Suttrop, W.; Tardini, G.; Tichmann, C.; Treutterer, W.; Tröster, C.; Urso, L.; Vainonen-Ahlgren, E.; Varela, P.; Vermare, L.; Volpe, F.; Wagner, D.; Wigger, C.; Wischmeier, M.; Wolfrum, E.; Würsching, E.; Yadikin, D.; Yu, Q.; Zasche, D.; Zehetbauer, T.; Zilker, M.

In: Nuclear Fusion, Vol. 49, No. 10, 104009, 2009.

Research output: Contribution to journalArticle

Zohm, H, Adamek, J, Angioni, C, Antar, G, Atanasiu, CV, Balden, M, Becker, W, Behler, K, Behringer, K, Bergmann, A, Bertoncelli, T, Bilato, R, Bobkov, V, Boom, J, Bottino, A, Brambilla, M, Braun, F, Brüdgam, M, Buhler, A, Chankin, A, Classen, I, Conway, GD, Coster, DP, De Marné, P, D'Inca, R, Drube, R, Dux, R, Eich, T, Engelhardt, K, Esposito, B, Fahrbach, HU, Fattorini, L, Fink, J, Fischer, R, Flaws, A, Foley, M, Forest, C, Fuchs, JC, Gl, K, Mũoz, MG, Adamov, MG, Giannone, L, Görler, T, Gori, S, Graça, SD, Granucci, G, Greuner, H, Gruber, O, Gude, A, Günter, S, Haas, G, Hahn, D, Harhausen, J, Hauff, T, Heinemann, B, Herrmann, A, Hicks, N, Hobirk, J, Hölzl, M, Holtum, D, Hopf, C, Horton, L, Huart, M, Igochine, V, Janzer, M, Jenko, F, Kallenbach, A, Kálvin, S, Kardaun, O, Kaufmann, M, Kick, M, Kirk, A, Klingshirn, HJ, Koscis, G, Kollotzek, H, Konz, C, Krieger, K, Kurki-Suonio, T, Kurzan, B, Lackner, K, Lang, PT, Langer, B, Lauber, P, Laux, M, Leuterer, F, Likonen, J, Liu, L, Lohs, A, Lunt, T, Lyssoivan, A, Maggi, CF, Manini, A, Mank, K, Manso, ME, Mantsinen, M, Maraschek, M, Martin, P, Mayer, M, McCarthy, P, McCormick, K, Meister, H, Meo, F, Merkel, P, Merkel, R, Mertens, V, Merz, F, Meyer, H, Mlynek, A, Monaco, F, Müller, HW, Münich, M, Murmann, H, Neu, G, Neu, R, Neuhauser, J, Nold, B, Noterdaeme, JM, Pautasso, G, Pereverzev, G, Poli, E, Potzel, S, Püschel, M, Pütterich, T, Pugno, R, Raupp, G, Reich, M, Reiter, B, Ribeiro, T, Riedl, R, Rohde, V, Roth, J, Rott, M, Ryter, F, Sandmann, W, Santos, J, Sassenberg, K, Sauter, P, Scarabosio, A, Schall, G, Schilling, HB, Schirmer, J, Schmid, A, Schmid, K, Schneider, W, Schramm, G, Schrittwieser, R, Schustereder, W, Schweinzer, J, Schweizer, S, Scott, B, Seidel, U, Sempf, M, Serra, F, Sertoli, M, Siccinio, M, Sigalov, A, Silva, A, Sips, ACC, Speth, E, Stäbler, A, Stadler, R, Steuer, KH, Stober, J, Streibl, B, Strumberger, E, Suttrop, W, Tardini, G, Tichmann, C, Treutterer, W, Tröster, C, Urso, L, Vainonen-Ahlgren, E, Varela, P, Vermare, L, Volpe, F, Wagner, D, Wigger, C, Wischmeier, M, Wolfrum, E, Würsching, E, Yadikin, D, Yu, Q, Zasche, D, Zehetbauer, T & Zilker, M 2009, 'Overview of ASDEX upgrade results', Nuclear Fusion, vol. 49, no. 10, 104009. https://doi.org/10.1088/0029-5515/49/10/104009
Zohm H, Adamek J, Angioni C, Antar G, Atanasiu CV, Balden M et al. Overview of ASDEX upgrade results. Nuclear Fusion. 2009;49(10). 104009. https://doi.org/10.1088/0029-5515/49/10/104009
Zohm, H. ; Adamek, J. ; Angioni, C. ; Antar, G. ; Atanasiu, C. V. ; Balden, M. ; Becker, W. ; Behler, K. ; Behringer, K. ; Bergmann, A. ; Bertoncelli, T. ; Bilato, R. ; Bobkov, V. ; Boom, J. ; Bottino, A. ; Brambilla, M. ; Braun, F. ; Brüdgam, M. ; Buhler, A. ; Chankin, A. ; Classen, I. ; Conway, G. D. ; Coster, D. P. ; De Marné, P. ; D'Inca, R. ; Drube, R. ; Dux, R. ; Eich, T. ; Engelhardt, K. ; Esposito, B. ; Fahrbach, H. U. ; Fattorini, L. ; Fink, J. ; Fischer, R. ; Flaws, A. ; Foley, M. ; Forest, C. ; Fuchs, J. C. ; Gl, K. ; Mũoz, M. García ; Adamov, M. Gemisic ; Giannone, L. ; Görler, T. ; Gori, S. ; Graça, S. Da ; Granucci, G. ; Greuner, H. ; Gruber, O. ; Gude, A. ; Günter, S. ; Haas, G. ; Hahn, D. ; Harhausen, J. ; Hauff, T. ; Heinemann, B. ; Herrmann, A. ; Hicks, N. ; Hobirk, J. ; Hölzl, M. ; Holtum, D. ; Hopf, C. ; Horton, L. ; Huart, M. ; Igochine, V. ; Janzer, M. ; Jenko, F. ; Kallenbach, A. ; Kálvin, S. ; Kardaun, O. ; Kaufmann, M. ; Kick, M. ; Kirk, A. ; Klingshirn, H. J. ; Koscis, G. ; Kollotzek, H. ; Konz, C. ; Krieger, K. ; Kurki-Suonio, T. ; Kurzan, B. ; Lackner, K. ; Lang, P. T. ; Langer, B. ; Lauber, P. ; Laux, M. ; Leuterer, F. ; Likonen, J. ; Liu, L. ; Lohs, A. ; Lunt, T. ; Lyssoivan, A. ; Maggi, C. F. ; Manini, A. ; Mank, K. ; Manso, M. E. ; Mantsinen, M. ; Maraschek, M. ; Martin, P. ; Mayer, M. ; McCarthy, P. ; McCormick, K. ; Meister, H. ; Meo, F. ; Merkel, P. ; Merkel, R. ; Mertens, V. ; Merz, F. ; Meyer, H. ; Mlynek, A. ; Monaco, F. ; Müller, H. W. ; Münich, M. ; Murmann, H. ; Neu, G. ; Neu, R. ; Neuhauser, J. ; Nold, B. ; Noterdaeme, J. M. ; Pautasso, G. ; Pereverzev, G. ; Poli, E. ; Potzel, S. ; Püschel, M. ; Pütterich, T. ; Pugno, R. ; Raupp, G. ; Reich, M. ; Reiter, B. ; Ribeiro, T. ; Riedl, R. ; Rohde, V. ; Roth, J. ; Rott, M. ; Ryter, F. ; Sandmann, W. ; Santos, J. ; Sassenberg, K. ; Sauter, P. ; Scarabosio, A. ; Schall, G. ; Schilling, H. B. ; Schirmer, J. ; Schmid, A. ; Schmid, K. ; Schneider, W. ; Schramm, G. ; Schrittwieser, R. ; Schustereder, W. ; Schweinzer, J. ; Schweizer, S. ; Scott, B. ; Seidel, U. ; Sempf, M. ; Serra, F. ; Sertoli, M. ; Siccinio, M. ; Sigalov, A. ; Silva, A. ; Sips, A. C C ; Speth, E. ; Stäbler, A. ; Stadler, R. ; Steuer, K. H. ; Stober, J. ; Streibl, B. ; Strumberger, E. ; Suttrop, W. ; Tardini, G. ; Tichmann, C. ; Treutterer, W. ; Tröster, C. ; Urso, L. ; Vainonen-Ahlgren, E. ; Varela, P. ; Vermare, L. ; Volpe, F. ; Wagner, D. ; Wigger, C. ; Wischmeier, M. ; Wolfrum, E. ; Würsching, E. ; Yadikin, D. ; Yu, Q. ; Zasche, D. ; Zehetbauer, T. ; Zilker, M. / Overview of ASDEX upgrade results. In: Nuclear Fusion. 2009 ; Vol. 49, No. 10.
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title = "Overview of ASDEX upgrade results",
abstract = "ASDEX Upgrade was operated with a fully W-covered wall in 2007 and 2008. Stationary H-modes at the ITER target values and improved H-modes with H up to 1.2 were run without any boronization. The boundary conditions set by the full W wall (high enough ELM frequency, high enough central heating and low enough power density arriving at the target plates) require significant scenario development, but will apply to ITER as well. D retention has been reduced and stationary operation with saturated wall conditions has been found. Concerning confinement, impurity ion transport across the pedestal is neoclassical, explaining the strong inward pinch of high-Z impurities in between ELMs. In improved H-mode, the width of the temperature pedestal increases with heating power, consistent with a scaling. In the area of MHD instabilities, disruption mitigation experiments using massive Ne injection reach volume averaged values of the total electron density close to those required for runaway suppression in ITER. ECRH at the q = 2 surface was successfully applied to delay density limit disruptions. The characterization of fast particle losses due to MHD has shown the importance of different loss mechanisms for NTMs, TAEs and also beta-induced Alfven eigenmodes (BAEs). Specific studies addressing the first ITER operational phase show that O1 ECRH at the HFS assists reliable low-voltage breakdown. During ramp-up, additional heating can be used to vary li to fit within the ITER range. Confinement and power threshold in He are more favourable than in H, suggesting that He operation could allow us to assess H-mode operation in the non-nuclear phase of ITER operation.",
author = "H. Zohm and J. Adamek and C. Angioni and G. Antar and Atanasiu, {C. V.} and M. Balden and W. Becker and K. Behler and K. Behringer and A. Bergmann and T. Bertoncelli and R. Bilato and V. Bobkov and J. Boom and A. Bottino and M. Brambilla and F. Braun and M. Br{\"u}dgam and A. Buhler and A. Chankin and I. Classen and Conway, {G. D.} and Coster, {D. P.} and {De Marn{\'e}}, P. and R. D'Inca and R. Drube and R. Dux and T. Eich and K. Engelhardt and B. Esposito and Fahrbach, {H. U.} and L. Fattorini and J. Fink and R. Fischer and A. Flaws and M. Foley and C. Forest and Fuchs, {J. C.} and K. Gl and Mũoz, {M. Garc{\'i}a} and Adamov, {M. Gemisic} and L. Giannone and T. G{\"o}rler and S. Gori and Gra{\cc}a, {S. Da} and G. Granucci and H. Greuner and O. Gruber and A. Gude and S. G{\"u}nter and G. Haas and D. Hahn and J. Harhausen and T. Hauff and B. Heinemann and A. Herrmann and N. Hicks and J. Hobirk and M. H{\"o}lzl and D. Holtum and C. Hopf and L. Horton and M. Huart and V. Igochine and M. Janzer and F. Jenko and A. Kallenbach and S. K{\'a}lvin and O. Kardaun and M. Kaufmann and M. Kick and A. Kirk and Klingshirn, {H. J.} and G. Koscis and H. Kollotzek and C. Konz and K. Krieger and T. Kurki-Suonio and B. Kurzan and K. Lackner and Lang, {P. T.} and B. Langer and P. Lauber and M. Laux and F. Leuterer and J. Likonen and L. Liu and A. Lohs and T. Lunt and A. Lyssoivan and Maggi, {C. F.} and A. Manini and K. Mank and Manso, {M. E.} and M. Mantsinen and M. Maraschek and P. Martin and M. Mayer and P. McCarthy and K. McCormick and H. Meister and F. Meo and P. Merkel and R. Merkel and V. Mertens and F. Merz and H. Meyer and A. Mlynek and F. Monaco and M{\"u}ller, {H. W.} and M. M{\"u}nich and H. Murmann and G. Neu and R. Neu and J. Neuhauser and B. Nold and Noterdaeme, {J. M.} and G. Pautasso and G. Pereverzev and E. Poli and S. Potzel and M. P{\"u}schel and T. P{\"u}tterich and R. Pugno and G. Raupp and M. Reich and B. Reiter and T. Ribeiro and R. Riedl and V. Rohde and J. Roth and M. Rott and F. Ryter and W. Sandmann and J. Santos and K. Sassenberg and P. Sauter and A. Scarabosio and G. Schall and Schilling, {H. B.} and J. Schirmer and A. Schmid and K. Schmid and W. Schneider and G. Schramm and R. Schrittwieser and W. Schustereder and J. Schweinzer and S. Schweizer and B. Scott and U. Seidel and M. Sempf and F. Serra and M. Sertoli and M. Siccinio and A. Sigalov and A. Silva and Sips, {A. C C} and E. Speth and A. St{\"a}bler and R. Stadler and Steuer, {K. H.} and J. Stober and B. Streibl and E. Strumberger and W. Suttrop and G. Tardini and C. Tichmann and W. Treutterer and C. Tr{\"o}ster and L. Urso and E. Vainonen-Ahlgren and P. Varela and L. Vermare and F. Volpe and D. Wagner and C. Wigger and M. Wischmeier and E. Wolfrum and E. W{\"u}rsching and D. Yadikin and Q. Yu and D. Zasche and T. Zehetbauer and M. Zilker",
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doi = "10.1088/0029-5515/49/10/104009",
language = "English",
volume = "49",
journal = "Nuclear Fusion",
issn = "0029-5515",
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TY - JOUR

T1 - Overview of ASDEX upgrade results

AU - Zohm, H.

AU - Adamek, J.

AU - Angioni, C.

AU - Antar, G.

AU - Atanasiu, C. V.

AU - Balden, M.

AU - Becker, W.

AU - Behler, K.

AU - Behringer, K.

AU - Bergmann, A.

AU - Bertoncelli, T.

AU - Bilato, R.

AU - Bobkov, V.

AU - Boom, J.

AU - Bottino, A.

AU - Brambilla, M.

AU - Braun, F.

AU - Brüdgam, M.

AU - Buhler, A.

AU - Chankin, A.

AU - Classen, I.

AU - Conway, G. D.

AU - Coster, D. P.

AU - De Marné, P.

AU - D'Inca, R.

AU - Drube, R.

AU - Dux, R.

AU - Eich, T.

AU - Engelhardt, K.

AU - Esposito, B.

AU - Fahrbach, H. U.

AU - Fattorini, L.

AU - Fink, J.

AU - Fischer, R.

AU - Flaws, A.

AU - Foley, M.

AU - Forest, C.

AU - Fuchs, J. C.

AU - Gl, K.

AU - Mũoz, M. García

AU - Adamov, M. Gemisic

AU - Giannone, L.

AU - Görler, T.

AU - Gori, S.

AU - Graça, S. Da

AU - Granucci, G.

AU - Greuner, H.

AU - Gruber, O.

AU - Gude, A.

AU - Günter, S.

AU - Haas, G.

AU - Hahn, D.

AU - Harhausen, J.

AU - Hauff, T.

AU - Heinemann, B.

AU - Herrmann, A.

AU - Hicks, N.

AU - Hobirk, J.

AU - Hölzl, M.

AU - Holtum, D.

AU - Hopf, C.

AU - Horton, L.

AU - Huart, M.

AU - Igochine, V.

AU - Janzer, M.

AU - Jenko, F.

AU - Kallenbach, A.

AU - Kálvin, S.

AU - Kardaun, O.

AU - Kaufmann, M.

AU - Kick, M.

AU - Kirk, A.

AU - Klingshirn, H. J.

AU - Koscis, G.

AU - Kollotzek, H.

AU - Konz, C.

AU - Krieger, K.

AU - Kurki-Suonio, T.

AU - Kurzan, B.

AU - Lackner, K.

AU - Lang, P. T.

AU - Langer, B.

AU - Lauber, P.

AU - Laux, M.

AU - Leuterer, F.

AU - Likonen, J.

AU - Liu, L.

AU - Lohs, A.

AU - Lunt, T.

AU - Lyssoivan, A.

AU - Maggi, C. F.

AU - Manini, A.

AU - Mank, K.

AU - Manso, M. E.

AU - Mantsinen, M.

AU - Maraschek, M.

AU - Martin, P.

AU - Mayer, M.

AU - McCarthy, P.

AU - McCormick, K.

AU - Meister, H.

AU - Meo, F.

AU - Merkel, P.

AU - Merkel, R.

AU - Mertens, V.

AU - Merz, F.

AU - Meyer, H.

AU - Mlynek, A.

AU - Monaco, F.

AU - Müller, H. W.

AU - Münich, M.

AU - Murmann, H.

AU - Neu, G.

AU - Neu, R.

AU - Neuhauser, J.

AU - Nold, B.

AU - Noterdaeme, J. M.

AU - Pautasso, G.

AU - Pereverzev, G.

AU - Poli, E.

AU - Potzel, S.

AU - Püschel, M.

AU - Pütterich, T.

AU - Pugno, R.

AU - Raupp, G.

AU - Reich, M.

AU - Reiter, B.

AU - Ribeiro, T.

AU - Riedl, R.

AU - Rohde, V.

AU - Roth, J.

AU - Rott, M.

AU - Ryter, F.

AU - Sandmann, W.

AU - Santos, J.

AU - Sassenberg, K.

AU - Sauter, P.

AU - Scarabosio, A.

AU - Schall, G.

AU - Schilling, H. B.

AU - Schirmer, J.

AU - Schmid, A.

AU - Schmid, K.

AU - Schneider, W.

AU - Schramm, G.

AU - Schrittwieser, R.

AU - Schustereder, W.

AU - Schweinzer, J.

AU - Schweizer, S.

AU - Scott, B.

AU - Seidel, U.

AU - Sempf, M.

AU - Serra, F.

AU - Sertoli, M.

AU - Siccinio, M.

AU - Sigalov, A.

AU - Silva, A.

AU - Sips, A. C C

AU - Speth, E.

AU - Stäbler, A.

AU - Stadler, R.

AU - Steuer, K. H.

AU - Stober, J.

AU - Streibl, B.

AU - Strumberger, E.

AU - Suttrop, W.

AU - Tardini, G.

AU - Tichmann, C.

AU - Treutterer, W.

AU - Tröster, C.

AU - Urso, L.

AU - Vainonen-Ahlgren, E.

AU - Varela, P.

AU - Vermare, L.

AU - Volpe, F.

AU - Wagner, D.

AU - Wigger, C.

AU - Wischmeier, M.

AU - Wolfrum, E.

AU - Würsching, E.

AU - Yadikin, D.

AU - Yu, Q.

AU - Zasche, D.

AU - Zehetbauer, T.

AU - Zilker, M.

PY - 2009

Y1 - 2009

N2 - ASDEX Upgrade was operated with a fully W-covered wall in 2007 and 2008. Stationary H-modes at the ITER target values and improved H-modes with H up to 1.2 were run without any boronization. The boundary conditions set by the full W wall (high enough ELM frequency, high enough central heating and low enough power density arriving at the target plates) require significant scenario development, but will apply to ITER as well. D retention has been reduced and stationary operation with saturated wall conditions has been found. Concerning confinement, impurity ion transport across the pedestal is neoclassical, explaining the strong inward pinch of high-Z impurities in between ELMs. In improved H-mode, the width of the temperature pedestal increases with heating power, consistent with a scaling. In the area of MHD instabilities, disruption mitigation experiments using massive Ne injection reach volume averaged values of the total electron density close to those required for runaway suppression in ITER. ECRH at the q = 2 surface was successfully applied to delay density limit disruptions. The characterization of fast particle losses due to MHD has shown the importance of different loss mechanisms for NTMs, TAEs and also beta-induced Alfven eigenmodes (BAEs). Specific studies addressing the first ITER operational phase show that O1 ECRH at the HFS assists reliable low-voltage breakdown. During ramp-up, additional heating can be used to vary li to fit within the ITER range. Confinement and power threshold in He are more favourable than in H, suggesting that He operation could allow us to assess H-mode operation in the non-nuclear phase of ITER operation.

AB - ASDEX Upgrade was operated with a fully W-covered wall in 2007 and 2008. Stationary H-modes at the ITER target values and improved H-modes with H up to 1.2 were run without any boronization. The boundary conditions set by the full W wall (high enough ELM frequency, high enough central heating and low enough power density arriving at the target plates) require significant scenario development, but will apply to ITER as well. D retention has been reduced and stationary operation with saturated wall conditions has been found. Concerning confinement, impurity ion transport across the pedestal is neoclassical, explaining the strong inward pinch of high-Z impurities in between ELMs. In improved H-mode, the width of the temperature pedestal increases with heating power, consistent with a scaling. In the area of MHD instabilities, disruption mitigation experiments using massive Ne injection reach volume averaged values of the total electron density close to those required for runaway suppression in ITER. ECRH at the q = 2 surface was successfully applied to delay density limit disruptions. The characterization of fast particle losses due to MHD has shown the importance of different loss mechanisms for NTMs, TAEs and also beta-induced Alfven eigenmodes (BAEs). Specific studies addressing the first ITER operational phase show that O1 ECRH at the HFS assists reliable low-voltage breakdown. During ramp-up, additional heating can be used to vary li to fit within the ITER range. Confinement and power threshold in He are more favourable than in H, suggesting that He operation could allow us to assess H-mode operation in the non-nuclear phase of ITER operation.

UR - http://www.scopus.com/inward/record.url?scp=70349102957&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70349102957&partnerID=8YFLogxK

U2 - 10.1088/0029-5515/49/10/104009

DO - 10.1088/0029-5515/49/10/104009

M3 - Article

AN - SCOPUS:70349102957

VL - 49

JO - Nuclear Fusion

JF - Nuclear Fusion

SN - 0029-5515

IS - 10

M1 - 104009

ER -