Zobrazeno 1 - 10
of 498
pro vyhledávání: '"K.H. Finken"'
Publikováno v:
Fusion Engineering and Design. 37:353-378
The structure of the resonant helical magnetic field of the dynamic ergodic divertor (DED) which is planned for TEXTOR is presented. The ergodic features are investigated by field line tracing calculations by the Gourdon code. The island widths and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a607f4700f6f3a562cb7beb5c74e0fd
https://doi.org/10.1016/s0920-3796(97)00077-x
https://doi.org/10.1016/s0920-3796(97)00077-x
Autor:
A. Nicolai
Publikováno v:
Fusion Engineering and Design. 37:347-352
Resonant perturbations of sufficient amplitude impose an ergodic structure on the field line trajectories. In the standard theory, these features are related to the amplitude of the resonant Fourier components of the Br-field. The characteristic para
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad64ce3fff25cf1961a51220f2bfa28d
https://doi.org/10.1016/s0920-3796(97)00076-8
https://doi.org/10.1016/s0920-3796(97)00076-8
Autor:
M. Z. Tokar
Publikováno v:
Fusion Engineering and Design. 37:417-425
Transport of charged particles and heat in a stochastic layer at the plasma edge are discussed. Results of numerical modelling by the one-dimensional code RITM of particle and energy balance in Tore–Supra discharges with and without ergodic diverto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c653de9b3b8caa9b0b758c59b5519030
https://doi.org/10.1016/s0920-3796(97)00083-5
https://doi.org/10.1016/s0920-3796(97)00083-5
Autor:
G.W. Spakman, Todd Evans, V. Phillips, Oliver Schmitz, Michael Lehnen, J. W. Coenen, Detlev Reiter, U. Samm, K.H. Finken, H. Frerichs, G. Telesca, A. Kraemer-Flecken, M. W. Jakubowski, M. Kantor, M. Clever, B. Unterberg, S. Brezinsek
Publikováno v:
STARTPAGE=330;ENDPAGE=334;TITLE=None
Two very contrary particle confinement stages were obtained at TEXTOR-DED by application of resonant magnetic perturbations. On the one hand a spontaneous build up of the total number of particles N tot with correlated increase in the particle confin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7580ec236840e9d43bccd06627bff7c
https://doi.org/10.1016/j.jnucmat.2009.01.149
https://doi.org/10.1016/j.jnucmat.2009.01.149
Autor:
M. von Hellermann, K.H. Finken, G. Van Oost, G. Telesca, Michael Lehnen, U. Samm, A. Pospieszczyk, M. W. Jakubowski, M. Z. Tokar, Yunfeng Liang, B. Unterberg, E. Delabie, Oliver Schmitz, S. Brezinsek
Publikováno v:
STARTPAGE=227;ENDPAGE=231;TITLE=None
For given conditions, significant change in main particle and carbon transport is observed in TEXTOR under the action of the Dynamic Ergodic Divertor, DED, operating both in 6/2 and 3/1 basic modes. In particular, the stochastic layer created at the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a899c2a1d7c3064753c65ef6a1f545c
https://doi.org/10.1016/j.jnucmat.2009.01.061
https://doi.org/10.1016/j.jnucmat.2009.01.061
Autor:
R. J. E. Jaspers, Y. Xu, P. Beyer, Michael Lehnen, B. Unterberg, Dirk Reiser, K.H. Finken, S. Jachmich, R.R. Weynants, M. W. Jakubowski, M. Vergote, M. Mitri, M. Van Schoor, B. Schweer
Publikováno v:
Nuclear Fusion. 47:1696-1709
The influence of the magnetic ergodization on edge turbulence and turbulence-induced transport has been investigated by Langmuir probes in TEXTOR under three different static DED configurations. Common features are observed. With DED, the edge equili
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a167b891a3d0b5749a9988a6ab9424a
https://doi.org/10.1088/0029-5515/47/12/008
https://doi.org/10.1088/0029-5515/47/12/008
Autor:
Ph. Mertens, D. Harting, X. Loozen, S. Brezinsek, H. Frerichs, M. Z. Tokar, Sadrilla S. Abdullaev, B. Schweer, U. Samm, B. Unterberg, K.H. Finken, Gennady Sergienko, R. C. Wolf, Michael Lehnen, Detlev Reiter, Oliver Schmitz, M. W. Jakubowski
Publikováno v:
Journal of Nuclear Materials. :680-685
At TEXTOR the dynamic ergodic divertor (DED) induces a stochastic edge layer by a resonant magnetic perturbation to control heat and particle exhaust. In this paper the characterization of its generic transport properties is described. The radial and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39cac21310a2fbf0af5f1a49706d4215
https://doi.org/10.1016/j.jnucmat.2007.01.067
https://doi.org/10.1016/j.jnucmat.2007.01.067
Publikováno v:
Physica Scripta. 75:712-721
We study the problem of the formation of a collisionless plasma sheath at a plasma–wall transition with grazing incidence of the magnetic field. We show that for a large ratio of the ion gyroradius to the Debye length, and below a critical angle ,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3ccd1cc20cf4761685d7f9967837a11
https://doi.org/10.1088/0031-8949/75/5/020
https://doi.org/10.1088/0031-8949/75/5/020
Autor:
H. R. Koslowski, Oswald Willi, Sadrilla S. Abdullaev, M. Z. Tokar, K.H. Finken, Textor team, K. Wongrach, Long Zeng
Publikováno v:
Physics of plasmas 22(4), 040704 (2015). doi:10.1063/1.4919253
A new physical mechanism of formation of runaway electron (RE) beams during plasma disruptions in tokamaks is proposed. The plasma disruption is caused by a strong stochastic magnetic field formed due to nonlinearly excited low-mode number magnetohyd
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af8500ed6865bfb22fc19ad4a6106aa9
Publikováno v:
Nuclear fusion 46, s113-s126 (2006). doi:10.1088/0029-5515/46/4/S02
Two mapping methods to study magnetic field lines near the separatrix of poloidal divertor tokamaks in the presence of external non-axisymmetric magnetic perturbations are proposed. The first mapping method is based on the Hamiltonian formulation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6751cb4f7bb89aaed7ef92c011acaafa
https://doi.org/10.1088/0029-5515/46/4/s02
https://doi.org/10.1088/0029-5515/46/4/s02