Overview of physics studies on ASDEX Upgrade
Review article, 2019
The ASDEX Upgrade (AUG) programme, jointly run with the EUROfusion MST1 task force, continues to significantly enhance the physics base of ITER and DEMO. Here, the full tungsten wall is a key asset for extrapolating to future devices. The high overall heating power, flexible heating mix and comprehensive diagnostic set allows studies ranging from mimicking the scrape-off-layer and divertor conditions of ITER and DEMO at high density to fully non-inductive operation (q 95 = 5.5, ) at low density. Higher installed electron cyclotron resonance heating power 6 MW, new diagnostics and improved analysis techniques have further enhanced the capabilities of AUG. Stable high-density H-modes with MW m-1 with fully detached strike-points have been demonstrated. The ballooning instability close to the separatrix has been identified as a potential cause leading to the H-mode density limit and is also found to play an important role for the access to small edge-localized modes (ELMs). Density limit disruptions have been successfully avoided using a path-oriented approach to disruption handling and progress has been made in understanding the dissipation and avoidance of runaway electron beams. ELM suppression with resonant magnetic perturbations is now routinely achieved reaching transiently . This gives new insight into the field penetration physics, in particular with respect to plasma flows. Modelling agrees well with plasma response measurements and a helically localised ballooning structure observed prior to the ELM is evidence for the changed edge stability due to the magnetic perturbations. The impact of 3D perturbations on heat load patterns and fast-ion losses have been further elaborated. Progress has also been made in understanding the ELM cycle itself. Here, new fast measurements of and E r allow for inter ELM transport analysis confirming that E r is dominated by the diamagnetic term even for fast timescales. New analysis techniques allow detailed comparison of the ELM crash and are in good agreement with nonlinear MHD modelling. The observation of accelerated ions during the ELM crash can be seen as evidence for the reconnection during the ELM. As type-I ELMs (even mitigated) are likely not a viable operational regime in DEMO studies of 'natural' no ELM regimes have been extended. Stable I-modes up to have been characterised using -feedback. Core physics has been advanced by more detailed characterisation of the turbulence with new measurements such as the eddy tilt angle - measured for the first time - or the cross-phase angle of and fluctuations. These new data put strong constraints on gyro-kinetic turbulence modelling. In addition, carefully executed studies in different main species (H, D and He) and with different heating mixes highlight the importance of the collisional energy exchange for interpreting energy confinement. A new regime with a hollow profile now gives access to regimes mimicking aspects of burning plasma conditions and lead to nonlinear interactions of energetic particle modes despite the sub-Alfvénic beam energy. This will help to validate the fast-ion codes for predicting ITER and DEMO.
ITER
DEMO
nuclear fusion
magnetic confinement
tokamak physics
Author
H.F. Meyer
United Kingdom Atomic Energy Authority
C. Angioni
Max Planck Society
C.G. Albert
Max Planck Society
N. Arden
Max Planck Society
R. Arredondo Parra
Max Planck Society
O. Asunta
Aalto University
M. De Baar
Dutch Institute for Fundamental Energy Research (DIFFER)
M. Balden
Max Planck Society
V. Bandaru
Max Planck Society
K. Behler
Max Planck Society
A. Bergmann
Max Planck Society
J. Bernardo
Instituto Superior Tecnico
M. Bernert
Max Planck Society
A. Biancalani
Max Planck Society
R. Bilato
Max Planck Society
G. Birkenmeier
Max Planck Society
T.C. Blanken
Eindhoven University of Technology
V. Bobkov
Max Planck Society
A. Bock
Max Planck Society
T. Bolzonella
Consorzio Rfx
A. Bortolon
Princeton University
B. Böswirth
Max Planck Society
C. Bottereau
The French Alternative Energies and Atomic Energy Commission (CEA)
A. Bottino
Max Planck Society
H. Van Den Brand
Dutch Institute for Fundamental Energy Research (DIFFER)
S. Brezinsek
Forschungszentrum Jülich
D. Brida
Max Planck Society
F. Brochard
University of Lorraine
C. Bruhn
Max Planck Society
J. Buchanan
United Kingdom Atomic Energy Authority
A. Buhler
Max Planck Society
A. Burckhart
Max Planck Society
Y. Camenen
Physique des Interactions Ioniques et Moleculaires
D. Carlton
Max Planck Society
M. Carr
United Kingdom Atomic Energy Authority
D. Carralero
Max Planck Society
C. Castaldo
ENEA
M. Cavedon
Max Planck Society
C. Cazzaniga
Consorzio Rfx
S. Ceccuzzi
ENEA
C. Challis
United Kingdom Atomic Energy Authority
A. V. Chankin
Max Planck Society
S. Chapman
The University of Warwick
C. Cianfarani
ENEA
F. Clairet
The French Alternative Energies and Atomic Energy Commission (CEA)
S. Coda
Swiss Federal Institute of Technology in Lausanne (EPFL)
R. Coelho
Instituto Superior Tecnico
J.W. Coenen
Forschungszentrum Jülich
L. Colas
The French Alternative Energies and Atomic Energy Commission (CEA)
G.D. Conway
Max Planck Society
S. Costea
University of Innsbruck
D. Coster
Max Planck Society
T.B. Cote
University of Wisconsin Madison
A. Creely
Massachusetts Institute of Technology (MIT)
G. Croci
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
G. Cseh
Hungarian Academy of Sciences
A. Czarnecka
Instytut Problemow Jadrowyc
I. Cziegler
University of York
O. D'Arcangelo
ENEA
P. David
Max Planck Society
C. Day
Karlsruhe Institute of Technology (KIT)
R. Delogu
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
P. De Marné
Max Planck Society
S.S. Denk
Max Planck Society
P. Denner
Forschungszentrum Jülich
M. Dibon
Max Planck Society
A. Di Siena
Max Planck Society
D. Douai
The French Alternative Energies and Atomic Energy Commission (CEA)
A. Drenik
Max Planck Society
R. Drube
Max Planck Society
M. Dunne
Max Planck Society
B. Duval
Swiss Federal Institute of Technology in Lausanne (EPFL)
R. Dux
Max Planck Society
T. Eich
Max Planck Society
S. Elgeti
Max Planck Society
K. Engelhardt
Max Planck Society
Boglarka Erdos
Hungarian Academy of Sciences
I. Erofeev
Max Planck Society
B. Esposito
ENEA
E. Fable
Max Planck Society
M. Faitsch
Max Planck Society
U. Fantz
Max Planck Society
H. Faugel
Max Planck Society
I. Faust
Max Planck Society
F Felici
Swiss Federal Institute of Technology in Lausanne (EPFL)
Jorge Ferreira
Instituto Superior Tecnico
S. Fietz
Max Planck Society
A. Figuereido
Instituto Superior Tecnico
R. Fischer
Max Planck Society
O. Ford
Max Planck Society
L. Frassinetti
Royal Institute of Technology (KTH)
S. Freethy
Max Planck Society
M. Fröschle
Max Planck Society
G. Fuchert
Max Planck Society
J.C. Fuchs
Max Planck Society
H. Fünfgelder
Max Planck Society
K. Galazka
Instytut Problemow Jadrowyc
J. Galdon-Quiroga
Max Planck Society
A. Gallo
The French Alternative Energies and Atomic Energy Commission (CEA)
Y. Gao
Forschungszentrum Jülich
S. Garavaglia
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
A. Garcia-Carrasco
Royal Institute of Technology (KTH)
M. Garcia-Munoz
University of Seville
B. Geiger
Max Planck Society
L. Giannone
Max Planck Society
L. Gil
Instituto Superior Tecnico
E. Giovannozzi
ENEA
C. Gleason-González
Karlsruhe Institute of Technology (KIT)
S. Glöggler
Max Planck Society
M. Gobbin
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T. Görler
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I. Gomez Ortiz
Max Planck Society
J. Gonzalez Martin
University of Seville
T. Goodman
Swiss Federal Institute of Technology in Lausanne (EPFL)
G. Gorini
University of Milano-Bicocca
D. Gradic
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A. Grater
Max Planck Society
G. Granucci
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
H. Greuner
Max Planck Society
M. Griener
Max Planck Society
M. Groth
Aalto University
A. Gude
Max Planck Society
S. Günter
Max Planck Society
L. Guimarais
Instituto Superior Tecnico
G. Haas
Max Planck Society
A.H. Hakola
Technical Research Centre of Finland (VTT)
C. Ham
United Kingdom Atomic Energy Authority
T. Happel
Max Planck Society
N. Den Harder
Max Planck Society
G.F. Harrer
Vienna University of Technology
J.R. Harrison
United Kingdom Atomic Energy Authority
V. Hauer
Karlsruhe Institute of Technology (KIT)
T. Hayward-Schneider
Max Planck Society
C. C. Hegna
University of Wisconsin Madison
B. Heinemann
Max Planck Society
S. Heinzel
Max Planck Society
T. Hellsten
General Atomics
S.S. Henderson
United Kingdom Atomic Energy Authority
P. Hennequin
École polytechnique
A. Herrmann
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M.F. Heyn
Technische Universität Graz
E. Heyn
Institut für Grenzflachenverfahrenstechnik und Plasmatechnologie
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T. Höschen
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Technical University of Denmark (DTU)
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L. Horvath
Budapest University of Technology and Economics
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University of Lorraine
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Hungarian Academy of Sciences
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Polish Academy of Sciences
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Technical University of Denmark (DTU)
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The French Alternative Energies and Atomic Energy Commission (CEA)
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Max Planck Society
S. Kálvin
Hungarian Academy of Sciences
M. Kantor
Dutch Institute for Fundamental Energy Research (DIFFER)
A. Kappatou
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Max Planck Society
J. Karhunen
Dutch Institute for Fundamental Energy Research (DIFFER)
S. Kasilov
Technische Universität Graz
Yevgen Kazakov
Royal Military Academy
W. Kernbichler
Technische Universität Graz
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United Kingdom Atomic Energy Authority
S. Kjer Hansen
Max Planck Society
V. Klevarova
Ghent university
G. Kocsis
Hungarian Academy of Sciences
A. Köhn
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M. Koubiti
Physique des Interactions Ioniques et Moleculaires
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A. Krivska
Royal Military Academy
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O. Kudlacek
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Taina Kurki-Suonio
Aalto University
B. Kurzan
Max Planck Society
B. Labit
Swiss Federal Institute of Technology in Lausanne (EPFL)
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F. Laggner
Vienna University of Technology
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Ph Lauber
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A. Lebschy
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N. Leuthold
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M. Li
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O. Linder
Max Planck Society
B. Lipschultz
University of York
F. Liu
ITER Organization
Y. Liu
United Kingdom Atomic Energy Authority
A. Lohs
Max Planck Society
Z. Lu
Max Planck Society
T. Luda Di Cortemiglia
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N.C. Luhmann
University of California
R. Lunsford
Princeton University
T. Lunt
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A Lyssoivan
Royal Military Academy
T. Maceina
Max Planck Society
J. Madsen
Technical University of Denmark (DTU)
R. Maggiora
Polytechnic University of Turin
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Max Planck Society
O. Maj
Max Planck Society
J. Mailloux
United Kingdom Atomic Energy Authority
R. Maingi
Princeton University
E. Maljaars
Eindhoven University of Technology
P. Manas
Max Planck Society
A. Mancini
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
A. Manhard
Max Planck Society
M.-E. Manso
Instituto Superior Tecnico
P. Mantica
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
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Centro Nacional de Supercomputacion
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P. Martin
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L. Marrelli
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A. Martitsch
Technische Universität Graz
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D. Mazon
The French Alternative Energies and Atomic Energy Commission (CEA)
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University College Cork
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Max Planck Society
H. Meister
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A. Medvedeva
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R. Merkel
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A. Merle
Swiss Federal Institute of Technology in Lausanne (EPFL)
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Max Planck Society
D. Meshcheriakov
Max Planck Society
O. Meyer
The French Alternative Energies and Atomic Energy Commission (CEA)
J. Miettunen
Dutch Institute for Fundamental Energy Research (DIFFER)
D. Milanesio
Polytechnic University of Turin
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Max Planck Society
A. Mlynek
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F. Monaco
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F. Nabais
Instituto Superior Tecnico
A. Nemes-Czopf
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G. Neu
Max Planck Society
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Max Planck Society
A.H. Nielsen
Technical University of Denmark (DTU)
S. K. Nielsen
Technical University of Denmark (DTU)
V. Nikolaeva
Max Planck Society
M. Nocente
University of Milano-Bicocca
J.-M. Noterdaeme
Max Planck Society
I. Novikau
Max Planck Society
S. Nowak
Swiss Federal Institute of Technology in Lausanne (EPFL)
M. Oberkofler
Max Planck Society
Michael Oberparleiter
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
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Max Planck Society
T. Odstrcil
Max Planck Society
J. Olsen
Technical University of Denmark (DTU)
F. Orain
Max Planck Society
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O. Pan
Max Planck Society
Gergely Papp
Max Planck Society
I. Paradela Perez
Aalto University
A. Pau
University of Cagliari
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F. Penzel
Max Planck Society
P. Petersson
Technical Research Centre of Finland (VTT)
J. Pinzón Acosta
Max Planck Society
P. Piovesan
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C. Piron
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R. Pitts
ITER Organization
U. Plank
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B. Plaum
Institut für Grenzflachenverfahrenstechnik und Plasmatechnologie
B. Ploeckl
Max Planck Society
V V Plyusnin
Instituto Superior Tecnico
G.I. Pokol
Royal Military Academy
E. Poli
Max Planck Society
L. Porte
Swiss Federal Institute of Technology in Lausanne (EPFL)
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Max Planck Society
M. Ramisch
Institut für Grenzflachenverfahrenstechnik und Plasmatechnologie
J. Rasmussen
Technical University of Denmark (DTU)
G.A. Rattá
Laboratorio Nacional de Fusion
S. Ratynskaia
Royal Institute of Technology (KTH)
G. Raupp
Max Planck Society
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ENEA
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University of Seville
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University of Seville
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Royal Institute of Technology (KTH)
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United Kingdom Atomic Energy Authority
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United Kingdom Atomic Energy Authority
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Technical University of Denmark (DTU)
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Aalto University
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University of Seville
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Swiss Federal Institute of Technology in Lausanne (EPFL)
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Centro Nacional de Supercomputacion
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University of Innsbruck
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Ghent university
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Swiss Federal Institute of Technology in Lausanne (EPFL)
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Chinese Academy of Sciences
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United Kingdom Atomic Energy Authority
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University of Cagliari
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Instituto Superior Tecnico
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United Kingdom Atomic Energy Authority
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Max Planck Society
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Aalto University
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The French Alternative Energies and Atomic Energy Commission (CEA)
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Istituto Di Fisica Del Plasma Piero Caldirola, Milan
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Technical University of Denmark (DTU)
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Hungarian Academy of Sciences
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Technical Research Centre of Finland (VTT)
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Istituto Di Fisica Del Plasma Piero Caldirola, Milan
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Royal Institute of Technology (KTH)
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Royal Institute of Technology (KTH)
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Royal Military Academy
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Eindhoven University of Technology
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Karlsruhe Institute of Technology (KIT)
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Ghent university
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University of Seville
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The French Alternative Energies and Atomic Energy Commission (CEA)
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Massachusetts Institute of Technology (MIT)
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General Atomics
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Hungarian Academy of Sciences
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Nuclear Fusion
0029-5515 (ISSN) 1741-4326 (eISSN)
Vol. 59 11 112014Subject Categories
Energy Engineering
Other Physics Topics
Fusion, Plasma and Space Physics
DOI
10.1088/1741-4326/ab18b8