Results 121 to 130 of about 90,764 (192)

Anisotropic regularization for inversion of fast-ion loss detector measurements

Nuclear Fusion
We introduce an anisotropic regularization framework for the reconstruction of distribution functions from measurements, utilizing an approach that applies distinct regularization techniques such as non-negative constrained Tikhonov, total variation, and
Bo Simmendefeldt Schmidt, Jakob Sauer Jørgensen, José Rueda-Rueda, Joaquín Galdon-Quíroga, Manuel García-Muñoz, Mirko Salewski, the ASDEX Upgrade Team   +6 more
doaj   +1 more source

Multi-scale turbulence simulation suggesting improvement of electron heated plasma confinement. [PDF]

Nat Commun, 2022
Maeyama S, Watanabe TH, Nakata M, Nunami M, Asahi Y, Ishizawa A.   +5 more
europepmc   +1 more source

Investigations on boronisation in the full-tungsten ASDEX UPGRADE

Nuclear Materials and Energy
Conditioning of the Plasma-Facing Surfaces (PFSs) in fusion devices is essential for reliable plasma operation. In ASDEX Upgrade (AUG), boronisation by a glow discharge in helium (He) with 10% of deuterated diborane is used as a standard wall ...
Volker Rohde, Karl Krieger, Tim-Oliver Hohmann, Andreas Redl, Jörg Hobirk, Sehoon An, Sangeetha Sasidharan   +6 more
doaj   +1 more source

Electron heat transport in ASDEX Upgrade: experiment and modeling

, 2003
Electron heat transport is studied in ASDEX Upgrade with Electron Cyclotron Heating for steady-state and power modulation. Experiments with varying core heat flux at constant edge flux allow a detailed determination of the transport ...
HU Fahrbach, KK Kirov, G Pereverzev, W Suttrop, F Leuterer, F De Luca, F Ryter, G Tardini, P Mantica, ASDEX Upgrade Team, A Jacchia, F Imbeaux, AG Peeters   +12 more
core  

Phenomenology of radiative tearing modes in ASDEX Upgrade

Nuclear Fusion
Radiative tearing modes (TMs) are magnetic islands with impurities accumulated inside. The present paper discusses experimental evidence and demonstrates, for the first time, simultaneous measurements of temperature, density, and tungsten concentration ...
O. Samoylov, V. Igochine, C. Angioni, D. Fajardo, T. Pütterich, M. Willensdorfer, B. Kurzan, H. Zohm, the ASDEX Upgrade Team, the EUROfusion Tokamak Exploitation Team   +9 more
doaj   +1 more source

Disruption prediction at ASDEX Upgrade using neural networks [PDF]

, 2006
n this paper, a Multi Layer Perceptron is trained to act as disruptions predictor at ASDEX Upgrade. In particular, an optimization procedure is performed to identify a time instant that discriminate between disruptive and safe phases of disruptive ...
Sonato, P., THE ASDEX UPGRADE TEAM, FANNI, ALESSANDRA, CANNAS, BARBARA, Fanni, A., SIAS, GIULIANA, P. SONATO, Zedda, M., ZEDDA, MARIA KATIUSCIA, Pautasso, G., Cannas, B., G. PAUTASSO, Sias, G.   +12 more
core  

Realization of thousand-second improved confinement plasma with Super I-mode in Tokamak EAST. [PDF]

Sci Adv, 2023
Song Y, Zou X, Gong X, Becoulet A, Buttery R, Bonoli P, Hoang T, Maingi R, Qian J, Zhong X, Liu A, Li E, Ding R, Huang J, Zang Q, Liu H, Wang L, Zhang L, Li G, Sun Y, Garofalo A, Osborne T, Leonard T, Baek SG, Wallace G, Xu L, Zhang B, Wang S, Chu Y, Zhang T, Duan Y, Lian H, Zhang X, Jin Y, Zeng L, Lyu B, Xiao B, Huang Y, Wang Y, Shen B, Xiang N, Wu Y, Wu J, Wang X, Ding B, Li M, Zhang X, Qin C, Xi W, Zhang J, Huang L, Yao D, Hu Y, Zuo G, Yuan Q, Zhou Z, Wang M, Xu H, Xie Y, Wang Z, Chen J, Xu G, Hu J, Lu K, Liu F, Wu X, Wan B, Li J, EAST Team.   +68 more
europepmc   +1 more source

Modelling of Backscattering off Filaments Using the Code IPF-FD3D for the Interpretation of Doppler Backscattering Data. [PDF]

Sensors (Basel), 2022
Yashin A, Teplova N, Zadvitskiy G, Ponomarenko A.   +3 more
europepmc   +1 more source

A Probe Head for Simultaneous Measurements of Electrostatic and Magnetic Fluctuations in ASDEX Upgrade Edge Plasma

, 2009
For ASDEX Upgrade (AUG) a new probe head was developed for simultaneous measurements of electric and magnetic fluctuations in the edge plasma region. The probe head consists of a cylindrical graphite case. On the front side six graphite pins are mounted.
Schrittwieser, R W, Lupu, C, Schrittwieser, R., Müller, H W, C. Lupu, Cavazzana, R, Ionita, C., Zuin, M., R. W. Schrittwieser, Zuin, M, Rasmussen, J., M. Zuin, Vianello, N., Vianello, N, Lupu, C., Ch. Maszl, Müller, H., Mehlmann, F, Maraschek, M, Rasmussen, J. J., Maraschek, M., Juul Rasmussen, Jens, Maszl, Ch, H.W. Müller, Schrittwieser, R. W., Rohde, V., C. Ionita, Rohde, V, J. J. Rasmussen, Ionita, C, null ASDEX Upgrade Team, ASDEX Upgrade Team, N. Vianello, V. Rohde, Naulin, V., V. Naulin, M. Maraschek, Maszl, C., Cavazzana, R., R. Cavazzana, Müller, H. W., F. Mehlmann, Naulin, Volker, Mehlmann, F.   +43 more
core   +1 more source

Quantitative magnetohydrodynamic modelling of flux pumping in ASDEX Upgrade

Nuclear Fusion
The sawtooth-free hybrid scenario has been achieved recently in ASDEX Upgrade (AUG) with applied non-inductive current sources and auxiliary heating (Burckhart et al 2023 Nucl. Fusion 63 126056).
Haowei Zhang, Matthias Hölzl, Isabel Krebs, Andreas Burckhart, Alexander Bock, Sibylle Günter, Valentin Igochine, Karl Lackner, Rohan Ramasamy, Hartmut Zohm, the JOREK Team, the ASDEX Upgrade Team   +11 more
doaj   +1 more source