Zobrazeno 1 - 10
of 361
pro vyhledávání: '"Rahbarnia K."'
Autor:
Krämer-Flecken, A., Proll, J. H. E., Weir, G., Costello, P., Fuchert, G., Geiger, J., Heuraux, S., Knieps, A., Langenberg, A., Mendes, S. Vaz, Pablant, N., Pasch, E., Rahbarnia, K., Sabot, R., Salazar, L., Smith, H. M., Thomsen, H., Windisch, T., Xiang, H. M., W7-X-team, the
In the past, quasi coherent modes were reported for nearly all tokamaks. The general definition describes modes as quasi coherent when the magnitude squared coherence is in the range of \SIrange{0.3}{0.6}{}. Quasi coherent modes are observed in the p
Externí odkaz:
http://arxiv.org/abs/2408.12900
Autor:
Carralero, D., Estrada, T., García-Regaña, J. M., Sánchez, E., Windisch, T., Alonso, A., Maragkoudakis, E., Brandt, C., Brunner, K. J., Gallego-Castillo, C., Rahbarnia, K., Thienpondt, H., Team, the Wendelstein 7-X
In this work, we present the first experimental evidence of the presence of zonal flow (ZF) structures in the optimized stellarator Wendelstein 7-X. Using an assortment of diagnostics, flux surface-uniform, electrostatic flow oscillations have been m
Externí odkaz:
http://arxiv.org/abs/2406.12514
Autor:
Chaudhary N., Hirsch M., Andreeva T., Geiger J., Hoefel U., Rahbarnia K., Wurden G. A., Wolf R. C.
Publikováno v:
EPJ Web of Conferences, Vol 277, p 03012 (2023)
Externí odkaz:
https://doaj.org/article/aa568b711d6f4e429128961b5d25fd7b
Autor:
Chaudhary N., Hirsch M., Andreeva T., Geiger J., Hoefel U., Rahbarnia K., Wurden G. A., Wolf R. C.
Publikováno v:
EPJ Web of Conferences, Vol 277, p 03004 (2023)
A magnetic configuration scan was performed at Wendelstein 7-X stellarator by varying the rotational transform to analyze the plasma confinement for magnetic configurations with different edge magnetic island locations and sizes. For the magnetic con
Externí odkaz:
https://doaj.org/article/4309d0073ff145208eb75b3c6fdbece5
Autor:
Coelho, A. J., Loizu, J., Ricci, P., Ramisch, M., Köhn-Seemann, A., Birkenmeier, G., Rahbarnia, K.
We present a validation of a three-dimensional, two-fluid simulation of plasma turbulence in the TJ-K stellarator, a low temperature plasma experiment ideally suited for turbulence measurements. The simulation is carried out by the GBS code, recently
Externí odkaz:
http://arxiv.org/abs/2304.00758
Autor:
Zanini M., Laqua H.P., Stange T., Brandt C., Hirsch M., Höfel U., Marushchenko N., Neuner U., Rahbarnia K., Schilling J., Thomsen H., Wolf R.C.
Publikováno v:
EPJ Web of Conferences, Vol 203, p 02013 (2019)
In the Wendelstein 7-X stellarator, up to 7MW of power are delivered to the plasma by an electron cyclotron resonance heating system consisting of ten 140 GHz gyrotrons [1]. Due to the flexible front steering mirror of each beam line, the power depos
Externí odkaz:
https://doaj.org/article/a3ae4f4a58374ecdbc9f67fa17097a00
Autor:
Stechow, A. v., Grulke, O., Wegner, Th., Proll, J. H. E., Alcusón, J. A., Smith, H. M., Baldzuhn, J., Beidler, C. D., Beurskens, M. N. A., Bozhenkov, S. A., Edlund, E., Geiger, B., Huang, Z., Ford, O. P., Fuchert, G., Langenberg, A., Pablant, N., Pasch, E., Porkolab, M., Rahbarnia, K., Schilling, J., Scott, E. R., Thomsen, H., Vanó, L., Weir, G., Team, The W7-X
In the Wendelstein 7-X magnetic confinement experiment, a reduction of turbulent density fluctuations as well as anomalous impurity diffusion is associated with a peaking of the plasma density profile. These effects correlate with improved confinemen
Externí odkaz:
http://arxiv.org/abs/2010.02160
Autor:
Äkäslompolo, S., Drewelow, P., Gao, Y., Ali, A., Biedermann, C., Bozhenkov, S., Dhard, C. P., Endler, M., Fellinger, J., Ford, O. P., Geiger, B., Geiger, J., Harderd, N. den, Hartmann, D., Hathiramani, D., Isobe, M., Jakubowski, M., Kazakov, Y., Killer, C., Lazerson, S., Mayerd, M., McNeely, P., Naujoks, D., Neelis, T. W. C., Kontula, J., Kurki-Suonio, T., Niemann, H., Ogawa, K., Pisano, F., Poloskei, P. Zs., Sitjes, A. Puig, Rahbarnia, K., Rust, N., Schmitt, J. C., Sleczka, M., Vano, L., van Vuuren, A., Wurden, G., Wolf, R. C., Team, the W7-X
Publikováno v:
S. Akaslompolo et al 2019 JINST 14 C10012
The first fast ion experiments in Wendelstein 7-X were performed in 2018. They are one of the first steps in demonstrating the optimised fast ion confinement of the stellarator. The fast ions were produced with a neutral beam injection (NBI) system a
Externí odkaz:
http://arxiv.org/abs/1906.07457
Akademický článek
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Autor:
Endler, M. *, Baldzuhn, J., Beidler, C.D., Bosch, H.-S., Bozhenkov, S., Buttenschön, B., Dinklage, A., Fellinger, J., Feng, Y., Fuchert, G., Gao, Y., Geiger, J., Grulke, O., Hartmann, D., Jakubowski, M., König, R., Laqua, H.P., Lazerson, S., McNeely, P., Naujoks, D., Neuner, U., Otte, M., Pasch, E., Sunn Pedersen, T., Perseo, V., Puig Sitjes, A., Rahbarnia, K., Rust, N., Schmitz, O., Spring, A., Stange, T., von Stechow, A., Turkin, Y., Wang, E., Wolf, R.C.
Publikováno v:
In Fusion Engineering and Design June 2021 167