Results 151 to 160 of about 416,653 (194)

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

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

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

Recent Developments in the ASDEX Upgrade DAQ and RP Environment

The ASDEX Upgrade data acquisition environment has been extended by new diagnostics which considerably increase the amount of data acquired. The new diagnostics, as well as the server, storage, and network upgrades are presented.
Behler, K., ASDEX Upgrade DAQ Group, ASDEX Upgrade Team   +2 more
core  

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  

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

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

Spectroscopic characterisation of boronisation glow discharges in ASDEX Upgrade

Nuclear Materials and Energy
During boronisation glow discharges in ASDEX Upgrade, the spectral radiance on several lines-of-sight through the vessel was measured for the complete visible spectrum in the range from 350–730 nm.
Ralph Dux, Sehoon An, Volker Rohde
doaj   +1 more source

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