Overview of ASDEX Upgrade results

Zohm, H.; Angioni, C.; Arslanbekov, R.; Atanasiu, C.; Becker, G.; Becker, W.; Behler, K.; Behringer, K.; Bergmann, A.; Bilato, R.; Bobkov, V.; Bolshukhin, D.; Bolzonella, T.; Borrass, K.; Brambilla, M.; Braun, F.; Buhler, A.; Carlson, A.; Conway, G. D.; Coster, D. P.; Drube, R.; Dux, R.; Egorov, S.; Eich, T.; Engelhardt, K.; Fahrbach, H.-U.; Fantz, U.; Faugel, H.; Finken, K. H.; Foley, M.; Franzen, P.; Fuchs, J. C.; Gafert, J.; Fournier, K. B.; Gantenbein, G.; Gehre, O.; Geier, A.; Gernhardt, J.; Goodman, T.; Gruber, O.; Gude, A.; Günter, S.; Haas, G.; Hartmann, D.; Heger, B.; Heinemann, B.; Herrmann, A.; Hobirk, J.; Hofmeister, F.; Hohenöcker, H.; Horton, L. D.; Igochine, V.; Jacchia, A.; Jakobi, M.; Jenko, F.; Kallenbach, A.; Kardaun, O.; Kaufmann, M.; Keller, A.; Kendl, A.; Kim, J.-W.; Kirov, K.; Kochergov, R.; Kollotzek, H.; Kraus, W.; Krieger, K.; Kurki-Suonio, T.; Kurzan, B.; Lang, P. T.; Lasnier, C.; Lauber, P.; Laux, M.; Leonard, A. W.; Leuterer, F.; Lohs, A.; Lorenz, A.; Lorenzini, R.; Maggi, C.; Maier, H.; Mank, K.; Manso, M.-E.; Mantica, P.; Maraschek, M.; Martines, E.; Mast, K.-F.; McCarthy, P.; Meisel, D.; Meister, H.; Meo, F.; Merkel, P.; Merkel, R.; Merkl, D.; Mertens, V.; Monaco, F.; Mück, A.; Müller, H. W.; Münich, M.; Murmann, H.; Na, Y.-S.; Neu, G.; Neu, R.; Neuhauser, J.; Nguyen, F.; Nishijima, D.; Nishimura, Y.; Noterdaeme, J.-M.; Nunes, I.; Pautasso, G.; Peeters, A. G.; Pereverzev, G.; Pinches, S. D.; Poli, E.; Proschek, M.; Pugno, R.; Quigley, E.; Raupp, G.; Reich, M.; Ribeiro, T.; Riedl, R.; Rohde, V.; Roth, J.; Ryter, F.; Saarelma, S.; Sandmann, W.; Savtchkov, A.; Sauter, O.; Schade, S.; Schilling, H.-B.; Schneider, W.; Schramm, G.; Schwarz, E.; Schweinzer, J.; Schweizer, S.; Scott, B. D.; Seidel, U.; Serra, F.; Sesnic, S.; Sihler, C.; Silva, A.; Sips, A. C. C.; Speth, E.; Stäbler, A.; Steuer, K.-H.; Stober, J.; Streibl, B.; Strumberger, E.; Suttrop, W.; Tabasso, A.; Tanga, A.; Tardini, G.; Tichmann, C.; Treutterer, W.; Troppmann, M.; Urano, H.; Varela, P.; Vollmer, O.; Wagner, D.; Wenzel, U.; Wesner, F.; Westerhof, E.; Wolf, R.; Wolfrum, E.; Würsching, E.; Yoon, S.-W.; Yu, Q.; Zasche, D.; Zehetbauer, T.; Zehrfeld, H.-P.

doi:10.1088/0029-5515/43/12/004

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Overview of ASDEX Upgrade results

Zohm, H., Angioni, C., Arslanbekov, R., Atanasiu, C., Becker, G., Becker, W., et al. (2003). Overview of ASDEX Upgrade results. Nuclear Fusion, 43, 1570-1582. doi:10.1088/0029-5515/43/12/004.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0027-3D27-2 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0027-3D28-F

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Zohm, H.¹, Author
Angioni, C.², Author
Arslanbekov, R.³, Author
Atanasiu, C.⁴, Author
Becker, G.², Author
Becker, W.⁵, Author
Behler, K.¹, Author
Behringer, K.^{6, 7}, Author
Bergmann, A.², Author
Bilato, R.², Author
Bobkov, V.⁵, Author
Bolshukhin, D.⁸, Author
Bolzonella, T.⁴, Author
Borrass, K.⁹, Author
Brambilla, M.², Author
Braun, F.⁵, Author
Buhler, A.¹⁰, Author
Carlson, A.¹⁰, Author
Conway, G. D.¹⁰, Author
Coster, D. P.², Author
Drube, R.¹, Author         Dux, R.⁷, Author         Egorov, S.⁴, AuthorEich, T.¹⁰, Author         Engelhardt, K.¹, Author         Fahrbach, H.-U.¹⁰, Author         Fantz, U.⁷, Author         Faugel, H.⁵, Author         Finken, K. H.⁴, AuthorFoley, M.⁴, AuthorFranzen, P.⁵, Author         Fuchs, J. C.¹⁰, Author         Gafert, J.³, Author         Fournier, K. B.⁴, AuthorGantenbein, G.⁴, AuthorGehre, O.¹⁰, Author         Geier, A.¹⁰, Author         Gernhardt, J.³, Author         Goodman, T.⁴, AuthorGruber, O.⁹, Author         Gude, A.², Author         Günter, S.², Author         Haas, G.^{5, 10}, Author         Hartmann, D.⁵, Author         Heger, B.³, Author         Heinemann, B.⁵, Author         Herrmann, A.¹⁰, Author         Hobirk, J.¹⁰, Author         Hofmeister, F.³, Author         Hohenöcker, H.¹, Author         Horton, L. D.¹⁰, Author         Igochine, V.⁹, Author         Jacchia, A.⁴, AuthorJakobi, M.¹, Author         Jenko, F.², Author         Kallenbach, A.⁷, Author         Kardaun, O.², Author         Kaufmann, M.^{10, 11}, Author         Keller, A.¹, Author         Kendl, A.⁹, Author         Kim, J.-W.⁹, Author         Kirov, K.^{1, 12}, Author         Kochergov, R.⁹, Author         Kollotzek, H.¹⁰, Author         Kraus, W.⁵, Author         Krieger, K.¹³, Author         Kurki-Suonio, T.⁴, AuthorKurzan, B.¹, Author         Lang, P. T.¹⁰, Author         Lasnier, C.⁴, AuthorLauber, P.², Author         Laux, M.¹⁴, Author         Leonard, A. W.⁴, AuthorLeuterer, F.⁵, Author         Lohs, A.¹⁰, Author         Lorenz, A.¹⁰, Author         Lorenzini, R.⁴, AuthorMaggi, C.⁷, Author         Maier, H.⁸, AuthorMank, K.¹⁰, Author         Manso, M.-E.⁴, AuthorMantica, P.⁴, AuthorMaraschek, M.¹, Author         Martines, E.⁴, AuthorMast, K.-F.³, Author         McCarthy, P.², Author         Meisel, D.³, Author         Meister, H.¹, Author         Meo, F.⁸, AuthorMerkel, P.², Author         Merkel, R.¹, Author         Merkl, D.¹⁰, Author         Mertens, V.¹⁰, Author         Monaco, F.¹, Author         Mück, A.³, Author         Müller, H. W.¹⁰, Author         Münich, M.³, Author         Murmann, H.³, Author         Na, Y.-S.¹⁰, Author         Neu, G.¹, Author         Neu, R.⁷, Author         Neuhauser, J.³, Author         Nguyen, F.⁴, AuthorNishijima, D.⁸, AuthorNishimura, Y.⁹, Author         Noterdaeme, J.-M.⁵, Author         Nunes, I.⁴, AuthorPautasso, G.², Author         Peeters, A. G.⁹, Author         Pereverzev, G.², Author         Pinches, S. D.⁹, Author         Poli, E.², Author         Proschek, M.⁴, AuthorPugno, R.³, Author         Quigley, E.⁴, AuthorRaupp, G.¹, Author         Reich, M.¹⁰, Author         Ribeiro, T.⁹, Author         Riedl, R.⁵, Author         Rohde, V.¹⁰, Author         Roth, J.¹³, Author         Ryter, F.¹⁵, Author         Saarelma, S.⁴, AuthorSandmann, W.¹⁰, Author         Savtchkov, A.⁴, AuthorSauter, O.⁸, AuthorSchade, S.³, Author         Schilling, H.-B.¹⁰, Author         Schneider, W.², Author         Schramm, G.¹⁰, Author         Schwarz, E.⁹, Author         Schweinzer, J.¹⁰, Author         Schweizer, S.¹⁰, Author         Scott, B. D.², Author         Seidel, U.¹⁰, Author         Serra, F.⁴, AuthorSesnic, S.³, Author         Sihler, C.¹⁰, Author         Silva, A.⁴, AuthorSips, A. C. C.¹⁰, Author         Speth, E.⁵, Author         Stäbler, A.⁵, Author         Steuer, K.-H.³, Author         Stober, J.¹⁰, Author         Streibl, B.¹⁰, Author         Strumberger, E.^{2, 16}, Author         Suttrop, W.¹, Author         Tabasso, A.³, Author         Tanga, A.³, Author         Tardini, G.¹⁰, Author         Tichmann, C.², Author         Treutterer, W.¹⁰, Author         Troppmann, M.¹⁰, Author         Urano, H.^{1, 12}, Author         Varela, P.⁴, AuthorVollmer, O.³, Author         Wagner, D.¹, Author         Wenzel, U.¹⁷, Author         Wesner, F.³, Author         Westerhof, E.⁴, AuthorWolf, R.¹¹, Author         Wolfrum, E.¹⁰, Author         Würsching, E.¹⁰, Author         Yoon, S.-W.³, Author         Yu, Q.², Author         Zasche, D.¹⁰, Author         Zehetbauer, T.¹, Author         Zehrfeld, H.-P.⁹, Author          more..

Affiliations:
1Experimental Plasma Physics 2 (E2), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856292
2Tokamak Theory (TOK), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856309
3External Organizations, ou_persistent22
4Institute of Atomic Physics, Romania, EURATOM Association; Consorzio RFX, Padova, Italy, EURATOM Association; Technical University, Plasma Physics Department, St. Petersburg, CIS; University of Augsburg, Germany; Institut für Plasmaphysik, FZ Jülich, Germany, EURATOM Association; Physics Department, University College Cork, Association EURATOM-DCU, Ireland; Lawrence Livermore National Laboratory, Livermore, USA; Institut für Plasmaforschung, Stuttgart University, Germany; CRPP, Ecole Polytechnique Federale de Lausanne, Switzerland, EURATOM Association; IFP Milano, Italy, EURATOM Association; Helsinki University of Technology, Finland, EURATOM Association; General Atomics, San Diego, USA; Centro de Fusao Nuclear, IST Lisbon, Portugal, EURATOM Association; CEA Cadarache, France, EURATOM Association; Institute for Applied Physics, Vienna, Austria, EURATOM Association; FOM Rijnhuizen, The Netherlands, EURATOM Association, ou_persistent22
5Technology (TE), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856318
6Energy and System Studies, Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856296
7Experimental Plasma Physics 4 (E4), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856293
8Max Planck Society, ou_persistent13
9Tokamak Theory (TOK), Max Planck Institute for Plasma Physics, Max Planck Society
10Experimental Plasma Physics 1 (E1), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856295
11Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856291
12Tokamak: Edge and Divertor Physics (E2), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856308
13Material Research (MF), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856328
14W7-X: Physics (PH), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856305
15Tokamak Edge and Divertor Physics (E2), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856308
16Relativistic Plasmas, Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856330
17Plasma Diagnostics Group (HUB), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856324

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Abstract: Recent results from the ASDEX Upgrade experimental campaigns 2001 and 2002 are presented. An improved understanding of energy and particle transport emerges in terms of a 'critical gradient' model for the temperature gradients. Coupling this to particle diffusion explains most of the observed behaviour of the density profiles, in particular, the finding that strong central heating reduces the tendency for density profile peaking. Internal transport barriers (ITBs) with electron and ion temperatures in excess of 20 keV (but not simultaneously) have been achieved. By shaping the plasma, a regime with small type II edge localized modes (ELMs) has been established. Here, the maximum power deposited on the target plates was greatly reduced at constant average power. Also, an increase of the ELM frequency by injection of shallow pellets was demonstrated. ELM free operation is possible in the quiescent H-mode regime previously found in DIII-D which has also been established on ASDEX Upgrade. Regarding stability, a regime with benign neoclassical tearing modes (NTMs) was found. During electron cyclotron current drive (ECCD) stabilization of NTMs, βN could be increased well above the usual onset level without a reappearance of the NTM. Electron cyclotron resonance heating and ECCD have also been used to control the sawtooth repetition frequency at a moderate fraction of the total heating power. The inner wall of the ASDEX Upgrade vessel has increasingly been covered with tungsten without causing detrimental effects on the plasma performance. Regarding scenario integration, a scenario with a large fraction of noninductively driven current (≥50%), but without ITB has been established. It combines improved confinement (τ_E/τ_ITER98 ≈ 1.2) and stability (β_N ≤ 3.5) at high Greenwald fraction (n_e/n_GW ≈ 0.85) in steady state and with type II ELMy edge and would offer the possibility for long pulses with high fusion power at reduced current in ITER.

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Language(s): eng - English

Dates: Date issued: 2003

Publication Status: Issued

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Rev. Type: Peer

Identifiers: eDoc: 60502
DOI: 10.1088/0029-5515/43/12/004
URI: http://stacks.iop.org/0029-5515/43/1570

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Title: Nuclear Fusion

Alternative Title : Nucl. Fusion

Source Genre: Journal

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Pages: - Volume / Issue: 43 Sequence Number: - Start / End Page: 1570 - 1582 Identifier: -