Results 121 to 130 of about 311,028 (224)

Divertor enrichment of recycling impurity species (He, N2, Ne, Ar, Kr) in ASDEX Upgrade H-modes

Nuclear Fusion
Particle balance calculations are done for the seeding species N _2 , Ne, Ar, Kr as well as He with the aim of obtaining a realistic description of the divertor and core plasma impurity content.
A. Kallenbach, R. Dux, S.S. Henderson, C. Tantos, M. Bernert, C. Day, R.M. McDermott, V. Rohde, A. Zito, the ASDEX Upgrade Team   +9 more
doaj   +1 more source

The I-mode confinement regime at ASDEX Upgrade: global propert ies and characterization of strongly intermittent density fluctuations [PDF]

, 2016
Properties of the I­mode confinement regime on the ASDEX Upgrade tokamak are summarized. A weak dependence of the power threshold for the L­I transition on the toroidal magnetic field strength is found.
Bernert, M., Conway, G., Dunne, M., Guimarais, L., Happel, T., Hennequin, P., Hetzenecker, A., Honore, C., Manz, P., Maraschek, M., Ryter, F., Stroth, U., Viezzer, E.   +12 more
core   +5 more sources

Advances, Challenges, and Future Perspectives of Microwave Reflectometry for Plasma Position and Shape Control on Future Nuclear Fusion Devices. [PDF]

Sensors (Basel), 2023
Gonçalves B, Varela P, Silva A, Silva F, Santos J, Ricardo E, Vale A, Luís R, Nietiadi Y, Malaquias A, Belo J, Dias J, Ferreira J, Franke T, Biel W, Heuraux S, Ribeiro T, De Masi G, Tudisco O, Cavazzana R, Marchiori G, D'Arcangelo O.   +21 more
europepmc   +1 more source

Isotope and density profile effects on pedestal neoclassical transport

, 2017
Cross-field neoclassical transport of heat, particles and momentum is studied in sharp density pedestals, with a focus on isotope and profile effects, using a radially global approach.
Buller, Stefan, Pusztai, Istvan
core   +1 more source

Neoclassical flows in deuterium-helium plasma density pedestals

, 2017
In tokamak transport barriers, the radial scale of profile variations can be comparable to a typical ion orbit width, which makes the coupling of the distribution function across flux surfaces important in the collisional dynamics.
Buller, Stefan, Newton, Sarah, Omotani, John, Pusztai, Istvan   +3 more
core   +1 more source

Simulations of ELM-induced tungsten melt flow across misaligned plasma-facing components

Nuclear Fusion
A computational fluid dynamics model of ELM-induced tungsten melt flow across a gap between misaligned plasma-facing components is validated against data from dedicated leading-edge exposures in the ASDEX Upgrade tokamak.
L. Vignitchouk, S. Ratynskaia, The ASDEX Upgrade Team   +2 more
doaj   +1 more source

Assessment of particle and heat loads to the upper open divertor in ASDEX Upgrade in favourable and unfavourable toroidal magnetic field directions

Nuclear Materials and Energy, 2019
Pairs of ASDEX Upgrade L-mode discharges with the toroidal magnetic field, BT, in the forward and reverse directions have been used to study the impact of neoclassical drifts on the divertor plasma conditions and detachment.
I. Paradela Pérez, M. Groth, M. Wischmeier, A. Scarabosio, D. Brida, P. David, D. Silvagni, D. Coster, T. Lunt, M. Faitsch   +9 more
doaj   +1 more source

Reducing systematic errors in time-frequency resolved mode number analysis

, 2015
The present paper describes the effect of magnetic pick-up coil transfer functions on mode number analysis in magnetically confined fusion plasmas. Magnetic probes mounted inside the vacuum chamber are widely used to characterize the mode structure of ...
Horváth, L., Maraschek, M., Papp, G., Pokol, G. I., Poloskei, P. Zs., Schuhbeck, K. H.   +5 more
core   +1 more source

Role of pinch in Argon impurity transport in ohmic discharges of Aditya-U Tokamak. [PDF]

Sci Rep, 2023
Shah K, Ghosh J, Patel S, Chowdhuri MB, Jadeja KA, Shukla G, Macwan T, Kumar A, Dolui S, Singh K, Tanna RL, Patel KM, Dey R, Manchanda R, Ramaiya N, Kumar R, Aich S, Yadava N, Purohit S, Gupta MK, Nagora UC, Pathak SK, Atrey PK, Mayya KBK.   +23 more
europepmc   +1 more source

Recent progress on improving ICRF coupling and reducing RF-specific impurities in ASDEX Upgrade

EPJ Web of Conferences, 2017
The recent scientific research on ASDEX Upgrade (AUG) has greatly advanced solutions to two issues of Radio Frequency (RF) heating in the Ion Cyclotron Range of Frequencies (ICRF): (a) the coupling of ICRF power to the plasma is significantly improved by
Zhang Wei, Bobkov Volodymyr, Noterdaeme Jean-Marie, Tierens Wouter, Aguiam Diogo, Bilato Roberto, Coster David, Colas Laurent, Crombé Kristel, Fuenfgelder Helmut, Faugel Helmut, Feng Yuhe, Jacquot Jonathan, Jacquet Philippe, Kallenbach Arne, Kostic Ana, Lunt Tilmann, Maggiora Riccardo, Ochoukov Roman, Silva Antonio, Suárez Guillermo, Tuccilo Angelo A., Tudisco Onofrio, Usoltceva Mariia, Van Eester Dirk, Wang Yongsheng, Yang Qingxi   +26 more
doaj   +1 more source