Zobrazeno 1 - 10
of 533
pro vyhledávání: '"U Stroth"'
Publikováno v:
New Journal of Physics, Vol 24, Iss 6, p 063024 (2022)
Microwave heating of over-dense plasmas is routinely achieved in the stellarator TJ-K. In contrast to usually applied heating scenarios in tokamaks or stellarators, an operational regime is described where the heating occurs well below the electron c
Externí odkaz:
https://doaj.org/article/b19870425f7848519f20bde239005f26
Spatio-temporal structure of turbulent Reynolds stress zonal flow drive in 3D magnetic configuration
Publikováno v:
New Journal of Physics, Vol 19, Iss 5, p 055003 (2017)
The poloidal dependence of the zonal flow drive and the underlying Reynolds stress structure are studied at the stellarator experiment TJ-K by means of a poloidal Langmuir-probe array. This gives the unique possibility to study the locality of the Re
Externí odkaz:
https://doaj.org/article/d7f3a7676f214024ae4fe7c6fd80611b
Autor:
G. Grenfell, P. Manz, G.D. Conway, T. Eich, J. Adamek, D. Brida, M. Komm, T. Nishizawa, M. Griener, B. Tal, U. Stroth
Publikováno v:
Nuclear Materials and Energy, Vol 33, Iss , Pp 101277- (2022)
The L-mode density limit in ASDEX Upgrade is investigated with focus on the scrape-off layer. We observe a chain of events that involves the collapse of the E×B outer shear layer (just outside the separatrix), widening of the electron pressure fall-
Externí odkaz:
https://doaj.org/article/dbfe6e023910460f9246010730428c65
Publikováno v:
Nuclear Materials and Energy, Vol 26, Iss , Pp 100890- (2021)
The search for scenarios in which tolerable power exhaust is combined with good confinement must involve high separatrix densities. We present here the first infrared thermography measurements at ASDEX Upgrade in a high density, high confinement H-mo
Externí odkaz:
https://doaj.org/article/79b00202a8e5460fa0561d5840f8f153
Publikováno v:
Nuclear Materials and Energy, Vol 19, Iss , Pp 205-210 (2019)
Previous simulation results for the tokamak ASDEX Upgrade have shown that Magnetic Perturbation (MP) fields could lead to a decrease of the peak heat flux onto the divertor targets. However, experimentally, such a decrease has not been observed. To u
Externí odkaz:
https://doaj.org/article/1564fb1d33a44b80a49528b7ae670478
Autor:
M. Cavedon, R. Dux, T. Pütterich, E. Viezzer, E. Wolfrum, M. Dunne, E. Fable, R. Fischer, G.F. Harrer, F.M. Laggner, A.F. Mink, U. Plank, U. Stroth, M. Willensdorfer, ASDEX Upgrade Team
Publikováno v:
Nuclear Materials and Energy, Vol 18, Iss , Pp 275-280 (2019)
The access to fast measurements, i.e. Δt ≈ 100 µs, of the ions and the electrons during an entire edge localized cycle (ELM) reveals asymmetries in the recovery of the maximum edge gradients. Different magnetic fluctuations are found to correlate
Externí odkaz:
https://doaj.org/article/f656f3bb15bc43158bf040c9d50e321d
Autor:
T. Happel, M. Griener, D. Silvagni, S.J. Freethy, P. Hennequin, F. Janky, P. Manz, D. Prisiazhniuk, F. Ryter, M. Bernert, D. Brida, T. Eich, M. Faitsch, L. Gil, L. Guimarais, A. Merle, D. Nille, J. Pinzón, B. Sieglin, U. Stroth, E. Viezzer
Publikováno v:
Nuclear Materials and Energy, Vol 18, Iss , Pp 159-165 (2019)
Recent I-mode investigations from the ASDEX Upgrade tokamak are reported. It is shown that neutral-beam-injection heated I-modes can be stationary, which is important in terms of extrapolability towards future fusion devices. Furthermore, detailed st
Externí odkaz:
https://doaj.org/article/a0e7eac20c2c47b8bf0d2bff453ee6fb
Autor:
M. Griener, E. Wolfrum, G. Birkenmeier, M. Faitsch, R. Fischer, G. Fuchert, L. Gil, G.F. Harrer, P. Manz, D. Wendler, U. Stroth
Publikováno v:
Nuclear Materials and Energy, Vol 25, Iss , Pp 100854- (2020)
The thermal helium beam diagnostic at ASDEX Upgrade can access the whole plasma edge region simultaneously with a high spatiotemporal resolution. Manifold dynamics of plasma edge transport is observed for different plasma confinement regimes, compris
Externí odkaz:
https://doaj.org/article/19940dc5b38543d9b89085ca1fcc2b9b
Autor:
O. Pan, M. Bernert, T. Lunt, M. Cavedon, B. Kurzan, S. Wiesen, M. Wischmeier, U. Stroth, the ASDEX Upgrade Team
Publikováno v:
Nuclear Fusion
The X-point radiator (XPR) is an attractive scenario that may contribute to solving the power exhaust problem in future fusion devices. The 2D transport code SOLPS-ITER was applied to reproduce the experimentally measured plasma condition with an XPR
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c088c49c8ea6bae5d3608f5c629c3c81
https://hdl.handle.net/21.11116/0000-000B-FD33-F21.11116/0000-000B-FD35-D
https://hdl.handle.net/21.11116/0000-000B-FD33-F21.11116/0000-000B-FD35-D
Publikováno v:
Nuclear Materials and Energy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7777464cdb16ae5263e45bb67101db93
https://hdl.handle.net/21.11116/0000-000C-A44B-721.11116/0000-000C-A449-9
https://hdl.handle.net/21.11116/0000-000C-A44B-721.11116/0000-000C-A449-9