Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Ralf Kleiber"'
Publikováno v:
Nuclear Fusion, Vol 64, Iss 5, p 054001 (2024)
We calculate Alfvén eigenmodes within a magnetic island (MiAE) which have been conjectured over a decade ago. Starting from a cylindrical plasma equilibrium, we calculate the complete metric of the island interior assuming an iota profile with a con
Externí odkaz:
https://doaj.org/article/771e0a9cca3144d4abda51167d3d3de5
Autor:
Cole, Michael D. J., Hager, Robert, Moritaka, Toseo, Dominski, Julien, Ku, Ralf Kleiber Seung-Hoe, Lazerson, Samuel, Riemann, Joerg, Chang, Choong-Seock
XGC (X-point Gyrokinetic Code) is a whole-volume, total-f gyrokinetic particle-in-cell code developed for modelling tokamaks. In recent work, XGC has been extended to model more general 3D toroidal magnetic configurations, such as stellarators. These
Externí odkaz:
http://arxiv.org/abs/1905.05653
Autor:
Alexey Mishchenko, Matthias Borchardt, Roman Hatzky, Ralf Kleiber, Axel Könies, Carolin Nührenberg, Pavlos Xanthopoulos, Gareth Roberg-Clark, Gabriel G. Plunk
Publikováno v:
Journal of Plasma Physics
Global electromagnetic turbulence is simulated in stellarator geometry using the gyrokinetic particle-in-cell code EUTERPE. The evolution of the turbulent electromagnetic field and the plasma profiles is considered at different values of the plasma b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::173071b22e4dd326b89f33597ba24495
https://hdl.handle.net/21.11116/0000-000D-3A21-D21.11116/0000-000D-3A23-B
https://hdl.handle.net/21.11116/0000-000D-3A21-D21.11116/0000-000D-3A23-B
Publikováno v:
Physics of Plasmas
A numerical approach is devised to calculate the shear Alfvén continuum inside and outside magnetic islands in cylindrical and stellarator plasmas. Equations for an appropriate set of coordinates and the arising equations for the continuum are deriv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6bef80408abaebcf5a5111826dae98e4
https://doi.org/10.1063/5.0102239
https://doi.org/10.1063/5.0102239
Autor:
A. Banon Navarro, Ivan Calvo, A. González-Jerez, J. H. E. Proll, C. D. Mora Moreno, E. Sánchez, J. Smoniewski, Ralf Kleiber, Michael Barnes, Felix I. Parra, J. M. Garcia-Regana, J. Riemann
Publikováno v:
Nuclear Fusion
Nuclear Fusion, 61(11):116074. Institute of Physics
Nuclear Fusion, 61(11):116074. Institute of Physics
In this work, we compare gyrokinetic simulations in stellarators using different computational domains, namely, flux tube, full-flux-surface, and radially global domains. Two problems are studied: the linear relaxation of zonal flows and the linear s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::051f113f53ee4ed5dee644f34e99093c
https://hdl.handle.net/21.11116/0000-0009-6D35-221.11116/0000-0009-6D37-021.11116/0000-0009-746F-9
https://hdl.handle.net/21.11116/0000-0009-6D35-221.11116/0000-0009-6D37-021.11116/0000-0009-746F-9
Autor:
M. Zanini, Alessandro Zocco, C. Slaby, Michael Cole, Ralf Kleiber, Kian Rahbarnia, Roman Hatzky, Heinrich P. Laqua, Torsten Stange, M. Borchardt, R. C. Wolf, H. Thomsen, C. Nührenberg, Per Helander, Axel Könies, Alexey Mishchenko
Publikováno v:
Nuclear Fusion
Magnetic reconnection in W7-X is studied by means of global numerical simulations in a series of models of increasing complexity. The magnetic geometry ranges from that of a cylinder to the full three-dimensional field of W7-X, and the equations solv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::649be37b57a33b26ebe5d98692d3cb5f
https://hdl.handle.net/21.11116/0000-0008-C795-F21.11116/0000-0008-C793-1
https://hdl.handle.net/21.11116/0000-0008-C795-F21.11116/0000-0008-C793-1
Publikováno v:
Physics of Plasmas
The effects of a radial electric field, which is ubiquitous in stellarators, are considered when a system of reduced-MHD equations is derived from a gyro-kinetic Vlasov–Maxwell system. The resulting equations for the MHD continuum have been impleme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f98fd79b69342bb4ea5c449dcab29d9d
https://hdl.handle.net/21.11116/0000-0007-AA2F-621.11116/0000-0007-AA32-1
https://hdl.handle.net/21.11116/0000-0007-AA2F-621.11116/0000-0007-AA32-1
Autor:
G. Wolfers, E. Ascasíbar, F. Fernández-Marina, Javier Alonso, Macarena Liniers, F. Martín-Díaz, P. Méndez, A.S. Kozachoek, A. Cappa, Jesús Vega, E. Oyarzábal, K. Sarksian, María Sánchez, M. Medrano, J. Hernández, J. Botija, J. Martínez-Fernández, Marley Vanegas Chamorro, Isabel García-Cortés, B. Momo, K. J. McCarthy, A. Tolkachev, D. Alegre, A. Pereira, L. I. Krupnik, G. Velasco, R. Carrasco, Raul Moreno, Ivan Calvo, U. Losada, F. Medina, E. Sánchez, A.A. Chmyga, G. Martín-Gómez, J. Guasp, F. Castejón, F. J. Miguel, A. Jiménez-Denche, N. Panadero, M. Borchardt, Jesús Herranz, B. Rojo, A. Molinero, L.G. Eliseev, A. Alonso, R. García-Gómez, E. R. Solano, J. Olivares, T. Estrada, Roman Hatzky, M. A. Ochando, J.M. Barcala, R. Merino, F. Lapayese, J.A. Sebastián, Y. Narushima, Shinsuke Satake, L. Melón, E. Sánchez-Sarabia, I. Kirpitchev, A. Martin de Aguilera, A.D. Komarov, M. Martínez, A. de la Peña, F. Martín-Hernández, B. Liu, C. Hidalgo, G. Catalán, Francisco L. Tabarés, E. Rincón, A.B. Martín-Rojo, J. M. Garcia-Regana, B. J. Sun, B. van Milligen, S. Cabrera, J. Sánchez, S. Petrov, A. de Bustos, M. A. Pedrosa, C. Rodríguez, B. Zurro, J. Hernanz, Eric Hollmann, A. Ros, Carlos A. Silva, J.L. de Pablos, S. Tallents, Luis F. Pacios, Ralf Kleiber, A. de Castro, José Luis Velasco, Luis Rios, B. López-Miranda, I. Pastor, E. Poveda, A. E. Petrov, P. Monreal, J. López-Razola, Luis Garcia, G.A. Rattá, M. Navarro, D. López-Bruna, E. de la Cal, J. M. Fontdecaba, A. Portas, M. Yokoyama, D. Tafalla, E. de la Luna, A. Soleto, R. Castro, D. Baião, Andreas Dinklage, A. López-Fraguas, A.V. Melnikov, A. Baciero, E. Blanco, I. S. Nedzelskiy
Publikováno v:
Nuclear Fusion
Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname
Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname
The effects of 3D geometry are explored in TJ-II from two relevant points of view: neoclassical transport and modification of stability and dispersion relation of waves. Particle fuelling and impurity transport are studied considering the 3D transpor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2597616898b54a06be2bb2e5c2ac2066
http://zaguan.unizar.es/record/63028
http://zaguan.unizar.es/record/63028
Autor:
Ralf Kleiber, E. Sánchez, Felix I. Parra, P. Monreal, A. Bustos, Axel Könies, Ivan Calvo, Alexey Mishchenko
Publikováno v:
Plasma Physics and Controlled Fusion
Due to their capability to reduce turbulent transport in magnetized plasmas, understanding the dynamics of zonal flows is an important problem in the fusion programme. Since the pioneering work by Rosenbluth and Hinton in axisymmetric tokamaks, it is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8f86ffab2b9a7cb78e449f474859b1b
https://hdl.handle.net/11858/00-001M-0000-002D-265F-511858/00-001M-0000-002D-265D-9
https://hdl.handle.net/11858/00-001M-0000-002D-265F-511858/00-001M-0000-002D-265D-9
Publikováno v:
Nuclear Fusion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b45edf72db534a323e51fbe86c5b67e
https://doi.org/10.1088/1741-4326/aafe31
https://doi.org/10.1088/1741-4326/aafe31