Results 71 to 80 of about 161 (152)

Suppressing trapped-electron-mode-driven turbulence via optimization of three-dimensional shaping

Nuclear Fusion
Turbulent transport driven by trapped electron modes (TEMs) is believed to drive significant heat and particle transport in quasihelically symmetric stellarators.
J.M. Duff, B.J. Faber, C.C. Hegna, M.J. Pueschel, P.W. Terry   +4 more
doaj   +1 more source

Experimental characterization of plasma start-up using ECRH in preparation of W7-X operation

EPJ Web of Conferences, 2015
The upcoming operation of Wendelstein 7-X (W7-X) will be supported by an Electron Cyclotron Resonance Heating (ECRH) system working at 140 GHz in second harmonic at the nominal magnetic field of 2.5T.
Preynas M., Aßmus D., Igami H., Kado S., Kobayashi S., Kubo S., Laqua H.P., Mutoh T., Nagasaki K., Otte M., Shimozuma T., Stange T., Yoshimura Y.   +12 more
doaj   +1 more source

Global stellarator coil optimization with quadratic constraints and objectives

Nuclear Fusion
Most present stellarator designs are produced by costly two-stage optimization: the first for an optimized equilibrium, and the second for a coil design reproducing its magnetic configuration.
Lanke Fu, Elizabeth J. Paul, Alan A. Kaptanoglu, Amitava Bhattacharjee   +3 more
doaj   +1 more source

Reactor-scale stellarators with force and torque minimized dipole coils

Nuclear Fusion
In this work, we utilize new coil objectives for stellarator optimization with autodifferentiation, including pointwise and net coil–coil forces and torques. We use these methods to perform the first large-scale optimization of planar dipole coil arrays,
Alan A. Kaptanoglu, Alexander Wiedman, Jacob Halpern, Siena Hurwitz, Elizabeth J. Paul, Matt Landreman   +5 more
doaj   +1 more source

Stellarator Equilibrium and Optimization

"Stellarator Optimization" tutorial presented by Dario Panici at the APS DPP Student Day (2024).
openaire   +2 more sources

The scoping, design, and plasma physics optimization of the Eos neutron source stellarator

Nuclear Fusion
On the path to a fusion pilot plant, Thea Energy plans to build Eos, a sub-breakeven, deuterium-deuterium, beam-target fusion, stellarator neutron source facility for producing tritium and other valuable radioisotopes.
C.P.S. Swanson, D.A. Gates, S.T.A. Kumar, M.F. Martin, T.G. Kruger, D.W. Dudt, P.J. Bonofiglo, the Thea Energy team   +7 more
doaj   +1 more source

Targeted Optimization of Quasi-Symmetric Stellarators

, 2016
The proposed research focuses on targeted areas of plasma physics dedicated to improving the stellarator concept. Research was pursued in the technical areas of edge/divertor physics in 3D configurations, magnetic island physics in stellarators, the role of 3D shaping on microinstabilities and turbulent transport and energetic ion confinement in ...
Chris C. Hegna, D. T. Anderson, J. N. Talmadge   +2 more
openaire   +2 more sources

How does the magnetic gradient scale length influence complexity of filamentary coils in stellarators?

Nuclear Fusion
The distance between the last closed flux surface (LCFS) and the nearest electromagnetic coils is a dominating factor in the cost, size, and engineering difficulty of stellarators.
John Kappel, Matt Landreman, Philipp Jurašić, Sophia A. Henneberg   +3 more
doaj   +1 more source

Role of the radial electric field in the confinement of energetic ions in the Wendelstein 7-X stellarator

Nuclear Fusion
Good fast-ion confinement is an essential requirement for a fusion reactor. The magnetic configuration of the Wendelstein 7-X (W7-X) stellarator is partially optimized in this regard in a reactor-relevant scenario: it is expected to show improved fast ...
M. Arranz, J.L. Velasco, I. Calvo, D. Carralero   +3 more
doaj   +1 more source

Recent progress in Chinese fusion research based on superconducting tokamak configuration. [PDF]

Innovation (Camb), 2022
Zheng J, Qin J, Lu K, Xu M, Duan X, Xu G, Hu J, Gong X, Zang Q, Liu Z, Wang L, Ding R, Chen J, Li P, Xue L, Cai L, Song Y.   +16 more
europepmc   +1 more source