Overview of the ASDEX Upgrade results
Journal article, 2026
After a 26-month vent ASDEX Upgrade (AUG) went back in operation with a newly designed upper W-divertor suitable for alternative divertor configurations (featuring in-vessel coils and cryo-pump). Parameter scans and an extensive set of measurements were obtained and their interpretation is ongoing. Prompted by the ITER wall change, dedicated experiments on non-boronized plasma startup were contrasted to that employing asymmetric and more symmetric boronizations. The asymmetric boronization proved to be as beneficial as the more symmetric one, which is in contrast to previous model calculations assuming perfect sticking of boron (measurements suggest sticking ≈ 0.3). In the startup phase also the impurity influxes at the outboard limiters were investigated contrasting the unboronized case featuring cold edges (low-Z radiation) to the boronized case, in which the lifetime of the boron layers could be estimated. Pedestal stability investigations revealed that the quasi-continuous exhaust (QCE) regime is obtained when ballooning modes are active in the vicinity of the separatrix and the global peeling-ballooning stability is high enough. Thus, at high enough shaping and high gas flux both can be achieved and QCE is a consequence. The closely related enhanced D-alpha (EDA) mode is not clearly distinguishable from QCE, e.g. the quasi-coherent mode characteristic for EDA also shows up in QCE. In QCE the impurity transport is behaving benign as could be measured for Ne with a novel analysis method making use of a comprehensive set of CXRS measurements. For high radiative fractions the regime of the X-point radiator (XPR) is accessible at AUG and the understanding of its access conditions and behaviour is further developed. Due to the localized radiative cooling at the X-point the XPR can be well diagnosed and thus controlled. For negative triangularity shapes, further experiments at increased shaping resulted in strongly heated L-mode plasmas avoiding ELMs. Two integrated modelling approaches towards ITER suggested that core W-accumulation will be no issue for ITER and that the fusion yield in ITER may be Q = 12 (i.e. ITPA20-IL scaling is too pessimistic). Further, investigations of the ITER ramp-down in AUG provide insights into maintaining position control. Various aspects of shattered pellet injection were investigated in AUG and one of the results show that with increasing Ne fraction the radiation during the current quench increases and the current decay becomes faster.
FEC overview
ASDEX Upgrade
alternative divertor configuration
Author
T. Pütterich
Max Planck Society
F. Albrecht
Max Planck Society
E. Alessi
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
S. An
Max Planck Society
C. Angioni
Max Planck Society
F. Antlitz
Max Planck Society
N. Arden
Max Planck Society
V. Artigues
Max Planck Society
M. Astrain
Max Planck Society
M. Balden
Max Planck Society
A. Banon-Navarro
Max Planck Society
A. Bergmann
Max Planck Society
M. Bergmann
Max Planck Society
M. Bernert
Max Planck Society
A. Biancalani
Leonardo de Vinci University Center
R. Bielajew
Massachusetts Institute of Technology (MIT)
M. Biasizzo
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
A. Bottino
Max Planck Society
H. Van Den Brand
Eindhoven University of Technology
M. Brenzke
Jülich Research Centre
S. Brezinsek
Jülich Research Centre
D. Brida
Max Planck Society
D. Brioschi
Max Planck Society
F. Brochard
Institut Jean Lamour
J. Buchanan
Culham Science Centre
A. Buhler
Max Planck Society
A. Burckhart
Max Planck Society
Y. Camenen
Aix Marseille University
B. Cannas
University of Cagliari
P. Cano Megías
University of Seville
J.A. Capitan Garcia
Max Planck Society
M. Carr
Culham Science Centre
C. Castaldo
ENEA
A. Castillo Castillo
Max Planck Society
A. Cathey
Max Planck Society
M. Cavedon
University of Milano-Bicocca
C. Cazzaniga
Consorzio Rfx
C. Challis
Culham Science Centre
A. V. Chankin
Max Planck Society
A. Chomiczewska
Institute of Plasma Physics & Laser Microfusion (IPPLM)
C. Cianfarani
ENEA
F. Clairet
The French Alternative Energies and Atomic Energy Commission (CEA)
S. Coda
Swiss Federal Institute of Technology in Lausanne (EPFL)
J.W. Coenen
Jülich Research Centre
G.D. Conway
Max Planck Society
S. Costea
University of Innsbruck
D. Coster
Max Planck Society
T.B. Cote
University of Wisconsin Madison
D. Cretu
Max Planck Society
G. Croci
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
D.J. Cruz Zabala
University of Seville
G. Cseh
Magyar Tudomanyos Akademia Energiatudomanyi Kutatokozpont
I. Cziegler
University of York
O. D’Arcangelo
CREATE Consortium
A. Dal Molin
University of Milano-Bicocca
P. David
Max Planck Society
C. Drobny
Max Planck Society
M. De Baar
Eindhoven University of Technology
P. De Marné
Max Planck Society
R. Delogu
Consorzio Rfx
P. Denner
Jülich Research Centre
A. Di Siena
Max Planck Society
J.J. Dominguez Palacios Durán
University of Seville
Dániel Dunai
Magyar Tudomanyos Akademia Energiatudomanyi Kutatokozpont
M. Dreval
National Science Center
M. Dunne
Max Planck Society
B. Duval
Swiss Federal Institute of Technology in Lausanne (EPFL)
R. Dux
Max Planck Society
T. Eich
Commonwealth Fusion Systems
S. Elgeti
Max Planck Society
A. Encheva
ITER Organization
B. Esposito
ENEA
E. Fable
Max Planck Society
M. Faitsch
Max Planck Society
D. Fajardo Jimenez
Max Planck Society
U. Fantz
Max Planck Society
M. Farník
Czech Academy of Sciences
H. Faugel
Max Planck Society
F Felici
Swiss Federal Institute of Technology in Lausanne (EPFL)
O. Ficker
Czech Academy of Sciences
R. Fischer
Max Planck Society
O. Ford
Max Planck Society
L. Frassinetti
Royal Institute of Technology (KTH)
M. Fröschle
Max Planck Society
G. Fuchert
Max Planck Society
J.C. Fuchs
Max Planck Society
M. Fulici
Max Planck Society
H. Fünfgelder
Max Planck Society
S. Futatani
Centro Nacional de Supercomputacion
K. Galazka
Institute of Plasma Physics & Laser Microfusion (IPPLM)
J. Galdon-Quiroga
University of Seville
D. Gallart Escolà
Centro Nacional de Supercomputacion
Y. Gao
Jülich Research Centre
S. Garavaglia
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
J. Garcia-Dominguez
University of Seville
M. Garcia-Munoz
University of Seville
M. Gehring
Max Planck Society
B. Geiger
University of Wisconsin Madison
L. Giannone
Max Planck Society
S. Gibson
Durham University
L. Gil
Instituto Superior Tecnico
E. Giovannozzi
ENEA
O. Girka
Max Planck Society
T. Gleiter
Max Planck Society
M. Gobbin
Consorzio Rfx
I. Gomez Ortiz
Max Planck Society
J.C. Gonzalez
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
T. Görler
Max Planck Society
D. Gradic
Max Planck Society
G. Granucci
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
A. Grater
Max Planck Society
G. Grenfell
Max Planck Society
H. Greuner
Max Planck Society
M. Griener
Max Planck Society
M. Groth
Aalto University
O. Grover
Max Planck Society
A. Gude
Max Planck Society
S. Günter
Max Planck Society
D. Hachmeister
Instituto Superior Tecnico
A.H. Hakola
Technical Research Centre of Finland (VTT)
C. Ham
Culham Science Centre
T. Happel
Max Planck Society
N. Den Harder
Max Planck Society
G.F. Harrer
Vienna University of Technology
J.R. Harrison
Culham Science Centre
V. Hartmann
Max Planck Society
T. Hayward-Schneider
Max Planck Society
B. Heinemann
Max Planck Society
P. Heinrich
Max Planck Society
T. Hellsten
General Atomics
S.S. Henderson
Culham Science Centre
P. Hennequin
École polytechnique
C. Herkommer
Max Planck Society
A. Herrmann
Max Planck Society
M. Herschel
Max Planck Society
S. Heuraux
Institut Jean Lamour
E. Heyn
Technische Universität Graz
J. Hidalgo-Salaverri
University of Seville
F. Hindenlang
Max Planck Society
J. Hobirk
Max Planck Society
I. Hofer-Maksymiw
Max Planck Society
K. Höfler
Max Planck Society
L. Hollendonner
Max Planck Society
J.H. Holm
Technical University of Denmark (DTU)
M. Hölzl
Max Planck Society
C. Hopf
Max Planck Society
S. Hörmann
Max Planck Society
L. Horvath
University of York
T. Höschen
Max Planck Society
A. Houben
Jülich Research Centre
A. Hubbard
Massachusetts Institute of Technology (MIT)
A. Huber
Jülich Research Centre
K. Hunger
Max Planck Society
V. Igochine
Max Planck Society
M. Iliasova
Russian Academy of Sciences
J. Illerhaus
Max Planck Society
Klara Insulander Björk
Chalmers, Physics, Subatomic, High Energy and Plasma Physics
C. Ionita Schrittwieser
University of Innsbruck
S. Irmer
Max Planck Society
I. Ivanova-Stanik
Institute of Plasma Physics & Laser Microfusion (IPPLM)
S. Jachmich
ITER Organization
W. Jacob
Max Planck Society
A. Jansen Van Vuuren
University of Seville
F. Jaulmes
Czech Academy of Sciences
Frank Jenko
Max Planck Society
T. Jensen
Technical University of Denmark (DTU)
M. Jimenez-Comez
University of Seville
A. Kallenbach
Max Planck Society
J. Kalis
Max Planck Society
M. Kantor
Eindhoven University of Technology
A. Kappatou
Max Planck Society
J. Karhunen
Aalto University
C.-P. Kasemann
Max Planck Society
S. Kasilov
Technische Universität Graz
Y. Kazakov
Royal Military Academy
A. Kendl
University of Innsbruck
R. Kermenov
Max Planck Society
W. Kernbichler
Vienna University of Technology
E. Khilkevitch
Russian Academy of Sciences
M. Kircher
Max Planck Society
A. Kirk
Culham Science Centre
S. Kjer Hansen
Max Planck Society
F. Klossek
Max Planck Society
G. Kocsis
Magyar Tudomanyos Akademia Energiatudomanyi Kutatokozpont
M. Komm
Czech Academy of Sciences
M. Kong
Swiss Federal Institute of Technology in Lausanne (EPFL)
A. Kramer-Flecken
Jülich Research Centre
M. Krause
Max Planck Society
A. Kreuzeder
Max Planck Society
K. Krieger
Max Planck Society
O. Kudlacek
Max Planck Society
D. Kulla
Max Planck Society
B. Kurzan
Max Planck Society
B. Labit
Swiss Federal Institute of Technology in Lausanne (EPFL)
F. Laggner
Princeton University
A. Lahtinen
Aalto University
P. Lainer
Vienna University of Technology
P.T. Lang
Max Planck Society
Ph Lauber
Max Planck Society
M Lehnen
ITER Organization
E. Lerche
Royal Military Academy
N. Leuthold
Columbia University
L. Li
Jülich Research Centre
Y.-C. Liang
Max Planck Society
J. Likonen
Technical Research Centre of Finland (VTT)
H. Lindl
Max Planck Society
B. Lipschultz
University of York
Yueqiang Liu
General Atomics
G. Lo-Cascio
Max Planck Society
Z. Lu
Max Planck Society
T. Luda di Cortemiglia
Max Planck Society
N.C. Luhmann
University of California
T. Lunt
Max Planck Society
A Lyssoivan
Royal Military Academy
J. Madsen
Technical University of Denmark (DTU)
H. Maier
Max Planck Society
M. Maierbeck
Max Planck Society
J. Mailloux
Culham Science Centre
R. Maingi
Princeton University
S. Makarov
Max Planck Society
E. Maljaars
Eindhoven University of Technology
V. Maquet
Royal Military Academy
Andrea Mancini
Max Planck Society
A. Manhard
Max Planck Society
P. Mantica
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
M. Mantsinen
Centro Nacional de Supercomputacion
P. Manz
University of Greifswald
Mark Maraschek
Max Planck Society
C. Marchetto
Polytechnic University of Turin
M. Markl
Vienna University of Technology
L. Marrelli
Consorzio Rfx
P. Martin
Consorzio Rfx
M. Mayer
Max Planck Society
M.L. Mayoral
Culham Science Centre
P. McCarthy
University College Cork
R. McDermott
Max Planck Society
K. McKay
University of Seville
R. Merkel
Max Planck Society
A. Merle
Swiss Federal Institute of Technology in Lausanne (EPFL)
H.F. Meyer
Culham Science Centre
D. Milanesio
Polytechnic University of Turin
V. Mitterauer
Max Planck Society
A. Moreau
Max Planck Society
V Naulin
Technical University of Denmark (DTU)
R. Nazikian
Princeton University
R.D. Nem
Technical University of Denmark (DTU)
R. Neu
Max Planck Society
A. Nischler
Max Planck Society
A.H. Nielsen
Technical University of Denmark (DTU)
S. K. Nielsen
Technical University of Denmark (DTU)
M. Nocente
University of Milano-Bicocca
R. Nocentini
Max Planck Society
R. Novak
Max Planck Society
S. Nowak
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
R. Ochoukov
Max Planck Society
J. Olsen
Technical University of Denmark (DTU)
P. Oyola
University of Seville
A. Orduna Martinez
Max Planck Society
O. Pan
Max Planck Society
Gergely Papp
Max Planck Society
I. Paradela Perez
Aalto University
A. Patel
Max Planck Society
A. Pau
Swiss Federal Institute of Technology in Lausanne (EPFL)
G Pautasso
Max Planck Society
C. Paz-Soldan
Columbia University
M. Peglau
Max Planck Society
E. Peluso
Sapienza University of Rome
J. Perez Gonzalez
University of Seville
P. Petersson
Royal Institute of Technology (KTH)
J. Pfennig
Max Planck Society
C. Piron
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L. Piron
Consorzio Rfx
B. Plaum
University of Stuttgart
B. Plöckl
Max Planck Society
G. Pokol
Magyar Tudomanyos Akademia Energiatudomanyi Kutatokozpont
E. Poli
Max Planck Society
L. Porte
Swiss Federal Institute of Technology in Lausanne (EPFL)
J. Puchmayr
Max Planck Society
T. Pütterich
Max Planck Society
L. Radovanovic
Vienna University of Technology
M. Ramisch
University of Stuttgart
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
A. Redl
Max Planck Society
D. Refy
Magyar Tudomanyos Akademia Energiatudomanyi Kutatokozpont
M. Reich
Max Planck Society
D. Reiser
Jülich Research Centre
M. Reisner
Max Planck Society
D. Reiter
Jülich Research Centre
D. Ricci
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
R. Riedl
Max Planck Society
J. Riesch
Max Planck Society
J.F. Rivero-Rodriguez
University of Seville
G. Rocchi
ENEA
P. Rodriguez-Fernandez
Massachusetts Institute of Technology (MIT)
V. Rohde
Max Planck Society
G. Ronchi
Eindhoven University of Technology
M. Rott
Max Planck Society
M. Rubel
Royal Institute of Technology (KTH)
D. Ryan
Culham Science Centre
F. Ryter
Max Planck Society
S. Saarelma
Culham Science Centre
M. Salerno
Max Planck Society
M. Salewski
Technical University of Denmark (DTU)
A. Salmi
Aalto University
O. Samoylov
Max Planck Society
L. Sanchis Sanchez
University of Seville
J. Santos
Instituto Superior Tecnico
S. Sasidharan
Max Planck Society
O. Sauter
Swiss Federal Institute of Technology in Lausanne (EPFL)
G. Schall
Max Planck Society
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Massachusetts Institute of Technology (MIT)
A. Schlüter
Max Planck Society
J. Scholte
Eindhoven University of Technology
K. Schmid
Max Planck Society
O. Schmitz
University of Wisconsin Madison
P.A. Schneider
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Max Planck Society
R. Schrittwieser
University of Innsbruck
M. Schubert
Max Planck Society
T. Schwarz-Selinger
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Josef Schweinzer
Max Planck Society
O. Seibold-Benjak
Max Planck Society
A. Shalpegin
Swiss Federal Institute of Technology in Lausanne (EPFL)
S. E. Sharapov
Culham Science Centre
F. Sheffield
Max Planck Society
U. Sheikh
Swiss Federal Institute of Technology in Lausanne (EPFL)
A. Shevelev
Russian Academy of Sciences
G. Sias
University of Cagliari
B. Sieben
Max Planck Society
M. Siccinio
Max Planck Society
B. Sieglin
Max Planck Society
A. Sigalov
Max Planck Society
A. Silva
Instituto Superior Tecnico
C. Silva
Instituto Superior Tecnico
D. Silvagni
Max Planck Society
J. Simpson
Culham Science Centre
S. Sipila
Aalto University
A. Snicker
Aalto University
E. R. Solano
Laboratorio Nacional de Fusion
F. Solfronk
Max Planck Society
C. Sommariva
Swiss Federal Institute of Technology in Lausanne (EPFL)
C. Sozzi
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
M. Spacek
Max Planck Society
G. Spizzo
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M. Spolaore
Consorzio Rfx
R. Stadler
Max Planck Society
F. Stefanelli
Max Planck Society
B. Stefanoska
Max Planck Society
A. Stegmeir
Max Planck Society
M. Stejner
Technical University of Denmark (DTU)
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Max Planck Society
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Max Planck Society
J. Stober
Max Planck Society
U. Stroth
Max Planck Society
E. Strumberger
Max Planck Society
R. Stucchi
Max Planck Society
G. Suarez Lopez
ITER Organization
A. Sulimro
Max Planck Society
W. Suttrop
Max Planck Society
T. Szepesi
Magyar Tudomanyos Akademia Energiatudomanyi Kutatokozpont
M. Szücs
Max Planck Society
T. Tala
Technical Research Centre of Finland (VTT)
W. Tang
Max Planck Society
G. Tardini
Max Planck Society
M. Tardocchi
Istituto Di Fisica Del Plasma Piero Caldirola, Milan
D. Terranova
Consorzio Rfx
M. Teschke
Max Planck Society
E. Thorén
Royal Institute of Technology (KTH)
R. Takacs
Max Planck Society
Daniel Told
Max Planck Society
W. Treutterer
Max Planck Society
G.L. Trevisan
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M. Tripský
Royal Military Academy
P. Ulbl
Max Planck Society
M. Usoltseva
Max Planck Society
M. Valisa
Consorzio Rfx
Martin Valovic
Culham Science Centre
M.A. Van Zeeland
General Atomics
S. Van Mulders
ITER Organization
F. Vannini
Max Planck Society
B. Vanovac
Massachusetts Institute of Technology (MIT)
T. Verdier
Technical University of Denmark (DTU)
Geert Verdoolaege
Royal Military Academy
N. Vianello
Consorzio Rfx
J. Vicente
Instituto Superior Tecnico
T. Vierle
Max Planck Society
E. Viezzer
University of Seville
I. Voitsekhovitch
Culham Science Centre
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Max Planck Society
U. Von Toussaint
Max Planck Society
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Max Planck Society
X. Wang
Max Planck Society
M. Weiland
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Max Planck Society
A.E. White
Massachusetts Institute of Technology (MIT)
M. Willensdorfer
Max Planck Society
B. Wiringer
Max Planck Society
M. Wischmeier
Max Planck Society
R C Wolf
Max Planck Society
E. Wolfrum
Max Planck Society
Q. Yang
Chinese Academy of Sciences
C. Yoo
Massachusetts Institute of Technology (MIT)
Q. Yu
Max Planck Society
R. Zagórski
Institute of Plasma Physics & Laser Microfusion (IPPLM)
F. Zahn
Max Planck Society
I. Zammuto
Max Planck Society
T. Zehetbauer
Max Planck Society
H. Zhang
Max Planck Society
W. Zhang
Chinese Academy of Sciences
W. Zholobenko
Max Planck Society
M. Zilker
Max Planck Society
C. Zimmermann
Max Planck Society
A. Zito
Max Planck Society
H. Zohm
Max Planck Society
S. Zoletnik
Magyar Tudomanyos Akademia Energiatudomanyi Kutatokozpont
Nuclear Fusion
0029-5515 (ISSN) 1741-4326 (eISSN)
Vol. 66 11Implementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium
European Commission (EC) (101052200), 2021-01-01 -- 2025-12-31.
Subject Categories (SSIF 2025)
Fusion, Plasma and Space Physics
Other Physics Topics
DOI
10.1088/1741-4326/ae61c8