Results 11 to 20 of about 2,075 (173)

Enhancing stellarator accessibility through port size optimization

Nuclear Fusion
Access to the plasma chamber in a stellarator reactor is essential for maintenance and diagnostics. However, the complex geometry of stellarator coils, often characterized by their strong twisting, can severely limit the space available for access ports.
A. Baillod, E.J. Paul, T. Elder, J.M. Halpern   +3 more
doaj   +3 more sources

Demonstration of reduced neoclassical energy transport in Wendelstein 7-X. [PDF]

Nature, 2021
Beidler CD, Smith HM, Alonso A, Andreeva T, Baldzuhn J, Beurskens MNA, Borchardt M, Bozhenkov SA, Brunner KJ, Damm H, Drevlak M, Ford OP, Fuchert G, Geiger J, Helander P, Hergenhahn U, Hirsch M, Höfel U, Kazakov YO, Kleiber R, Krychowiak M, Kwak S, Langenberg A, Laqua HP, Neuner U, Pablant NA, Pasch E, Pavone A, Pedersen TS, Rahbarnia K, Schilling J, Scott ER, Stange T, Svensson J, Thomsen H, Turkin Y, Warmer F, Wolf RC, Zhang D, W7-X Team.   +39 more
europepmc   +2 more sources

Integrating novel stellarator single-stage optimization algorithms to design the Columbia stellarator experiment

Nuclear Fusion
The Columbia Stellarator eXperiment (CSX), currently being designed at Columbia University, aims to test theoretical predictions related to QA plasma behavior, and to pioneer the construction of an optimized stellarator using three-dimensional, non ...
A. Baillod, E.J. Paul, G. Rawlinson, M. Haque, S.W. Freiberger, S. Thapa   +5 more
doaj   +3 more sources

Numerical studies on electron cyclotron resonance heating and optimization in the CN-H1 stellarator

Nuclear Engineering and Technology
The H1-NF stellarator in the Australian National University has been transported to University of South China and is currently being restored and reconstructed to the CN-H1 stellarator.
Chun Yan Li, Ping Wei Zheng, Xue Yu Gong, Zheng Kun Gao, Xin Chen Jiang   +4 more
doaj   +3 more sources

Optimizing Stellarators for Turbulent Transport [PDF]

Physical Review Letters, 2010
Up to now, the term "transport-optimized" stellarators has meant optimized to minimize neoclassical transport, while the task of also mitigating turbulent transport, usually the dominant transport channel in such designs, has not been addressed, due to the complexity of plasma turbulence in stellarators.
Mynick, H., Pomphrey, N., Xanthopoulos, P.   +2 more
openaire   +6 more sources

Optimizing the HSX stellarator for microinstability by coil-current adjustments

Nuclear Fusion, 2023
The optimization of helically symmetric experiment (HSX) for reduced microinstability has been achieved by examining a large set of configurations within a neighborhood of the standard operating configuration.
M.J. Gerard, B. Geiger, M.J. Pueschel, A. Bader, C.C. Hegna, B.J. Faber, P.W. Terry, S.T.A. Kumar, J.C. Schmitt   +8 more
doaj   +1 more source

Collisionless microinstabilities in stellarators II - numerical simulations [PDF]

, 2013
Microinstabilities exhibit a rich variety of behavior in stellarators due to the many degrees of freedom in the magnetic geometry. It has recently been found that certain stellarators (quasi-isodynamic ones with maximum-$J$ geometry) are partly resilient
Helander, P., Proll, J. H. E., Xanthopoulos, P.   +2 more
core   +1 more source

Stellarator coil optimization supporting multiple magnetic configurations

Nuclear Fusion, 2022
We present a technique that can be used to design stellarators with a high degree of experimental flexibility. For our purposes, flexibility is defined by the range of values the rotational transform can take on the magnetic axis of the vacuum field ...
Brandon F. Lee, Elizabeth J. Paul, Georg Stadler, Matt Landreman   +3 more
doaj   +1 more source

Identification of important error fields in stellarators using Hessian matrix method [PDF]

, 2019
Error fields are predominantly attributed to inevitable coil imperfections. Controlling error fields during coil fabrication and assembly is crucial for stellarators.
127313, 127839, 127898, 127899, 66532, 66536, 66893, GATES, David A., HUDSON, Stuart R., LIU, Haifeng, OKAMURA, Shoichi, SHIMIZU, Akihiro, XU, Yuhong, ZHU, Caoxiang   +13 more
core   +3 more sources

Global stochastic optimization of stellarator coil configurations

Journal of Plasma Physics, 2022
In the construction of a stellarator, the manufacturing and assembling of the coil system is a dominant cost. These coils need to satisfy strict engineering tolerances, and if those are not met the project could be cancelled as in the case of the National Compact Stellarator Experiment (NCSX) project (R.L.
Silke Glas, Misha Padidar, Ariel Kellison, David Bindel   +3 more
openaire   +2 more sources