Tim Happel
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Sheared flows and transition to improved confinement regime in the TJ-II stellarator
T Estrada, T Happel, L Eliseev, D López-Bruna, E Ascasíbar, E Blanco, ...
Plasma Physics and Controlled Fusion 51 (12), 124015, 2009
High-accuracy characterization of the edge radial electric field at ASDEX Upgrade
E Viezzer, T Pütterich, GD Conway, R Dux, T Happel, JC Fuchs, ...
Nuclear Fusion 53 (5), 053005, 2013
Spatiotemporal structure of the interaction between turbulence and flows at the LH transition in a toroidal plasma
T Estrada, C Hidalgo, T Happel, PH Diamond
Physical review letters 107 (24), 245004, 2011
Doppler reflectometer system in the stellarator TJ-II
T Happel, T Estrada, E Blanco, V Tribaldos, A Cappa, A Bustos
Review of Scientific Instruments 80 (7), 073502, 2009
Survey of the H-mode power threshold and transition physics studies in ASDEX Upgrade
F Ryter, SK Rathgeber, LB Orte, M Bernert, GD Conway, R Fischer, ...
Nuclear Fusion 53 (11), 113003, 2013
Experimental observation of coupling between turbulence and sheared flows during LH transitions in a toroidal plasma
T Estrada, T Happel, C Hidalgo, E Ascasibar, E Blanco
EPL (Europhysics Letters) 92 (3), 35001, 2010
Confinement transitions in TJ-II under Li-coated wall conditions
J Sánchez, M Acedo, A Alonso, J Alonso, P Alvarez, E Ascasíbar, ...
Nuclear Fusion 49 (10), 104018, 2009
Generation of blobs and holes in the edge of the ASDEX Upgrade tokamak
B Nold, GD Conway, T Happel, HW Müller, M Ramisch, V Rohde, U Stroth
Plasma Physics and Controlled Fusion 52 (6), 065005, 2010
Steady-state operation scenario and the first experimental result on QUEST
K Hanada, K Sato, H Zushi, K Nakamura, M Sakamoto, H Idei, ...
Plasma and fusion research 5, S1007-S1007, 2010
Overview of ASDEX Upgrade results
A Kallenbach, J Adamek, L Aho-Mantila, S Äkäslompolo, C Angioni, ...
Nuclear Fusion 51 (9), 094012, 2011
Core turbulence behavior moving from ion-temperature-gradient regime towards trapped-electron-mode regime in the ASDEX Upgrade tokamak and comparison with gyrokinetic simulation
T Happel, AB Navarro, GD Conway, C Angioni, M Bernert, M Dunne, ...
Physics of Plasmas 22 (3), 032503, 2015
Overview of progress in European medium sized tokamaks towards an integrated plasma-edge/wall solution
H Meyer, T Eich, M Beurskens, S Coda, A Hakola, P Martin, J Adamek, ...
Nuclear fusion 57 (10), 102014, 2017
Geodesic oscillations and the weakly coherent mode in the I-mode of ASDEX Upgrade
P Manz, P Lauber, VE Nikolaeva, T Happel, F Ryter, G Birkenmeier, ...
Nuclear Fusion 55 (8), 083004, 2015
Generation of intermittent turbulent events at the transition from closed to open field lines in a toroidal plasma
T Happel, F Greiner, N Mahdizadeh, B Nold, M Ramisch, U Stroth
Physical review letters 102 (25), 255001, 2009
Overview of ASDEX Upgrade results
U Stroth, J Adamek, L Aho-Mantila, S Äkäslompolo, C Amdor, C Angioni, ...
Nuclear Fusion 53 (10), 104003, 2013
Investigation of the parallel dynamics of drift-wave turbulence in toroidal plasmas
N Mahdizadeh, F Greiner, T Happel, A Kendl, M Ramisch, BD Scott, ...
Plasma Physics and Controlled Fusion 49 (7), 1005, 2007
Multi-device studies of pedestal physics and confinement in the I-mode regime
AE Hubbard, T Osborne, F Ryter, M Austin, LB Orte, RM Churchill, ...
Nuclear Fusion 56 (8), 086003, 2016
Interplay between turbulence, neoclassical and zonal flows during the transition from low to high confinement mode at ASDEX Upgrade
M Cavedon, T Pütterich, E Viezzer, G Birkenmeier, T Happel, FM Laggner, ...
Nuclear Fusion 57 (1), 014002, 2016
TORBEAM 2.0, a paraxial beam tracing code for electron-cyclotron beams in fusion plasmas for extended physics applications
E Poli, A Bock, M Lochbrunner, O Maj, M Reich, A Snicker, A Stegmeir, ...
Computer Physics Communications 225, 36-46, 2018
I-mode studies at ASDEX Upgrade: LI and IH transitions, pedestal and confinement properties
F Ryter, R Fischer, JC Fuchs, T Happel, RM McDermott, E Viezzer, ...
Nuclear Fusion 57 (1), 016004, 2016
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