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Träfflista för sökning "WFRF:(Xie E.) srt2:(2020-2024)"

Search: WFRF:(Xie E.) > (2020-2024)

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  • Fenstermacher, M.E., et al. (author)
  • DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy
  • 2022
  • In: Nuclear Fusion. - : IOP Publishing. - 0029-5515 .- 1741-4326. ; 62:4
  • Journal article (peer-reviewed)abstract
    • DIII-D physics research addresses critical challenges for the operation of ITER and the next generation of fusion energy devices. This is done through a focus on innovations to provide solutions for high performance long pulse operation, coupled with fundamental plasma physics understanding and model validation, to drive scenario development by integrating high performance core and boundary plasmas. Substantial increases in off-axis current drive efficiency from an innovative top launch system for EC power, and in pressure broadening for Alfven eigenmode control from a co-/counter-I p steerable off-axis neutral beam, all improve the prospects for optimization of future long pulse/steady state high performance tokamak operation. Fundamental studies into the modes that drive the evolution of the pedestal pressure profile and electron vs ion heat flux validate predictive models of pedestal recovery after ELMs. Understanding the physics mechanisms of ELM control and density pumpout by 3D magnetic perturbation fields leads to confident predictions for ITER and future devices. Validated modeling of high-Z shattered pellet injection for disruption mitigation, runaway electron dissipation, and techniques for disruption prediction and avoidance including machine learning, give confidence in handling disruptivity for future devices. For the non-nuclear phase of ITER, two actuators are identified to lower the L-H threshold power in hydrogen plasmas. With this physics understanding and suite of capabilities, a high poloidal beta optimized-core scenario with an internal transport barrier that projects nearly to Q = 10 in ITER at ∼8 MA was coupled to a detached divertor, and a near super H-mode optimized-pedestal scenario with co-I p beam injection was coupled to a radiative divertor. The hybrid core scenario was achieved directly, without the need for anomalous current diffusion, using off-axis current drive actuators. Also, a controller to assess proximity to stability limits and regulate β N in the ITER baseline scenario, based on plasma response to probing 3D fields, was demonstrated. Finally, innovative tokamak operation using a negative triangularity shape showed many attractive features for future pilot plant operation.
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  • Delios, A., et al. (author)
  • Examining the generalizability of research findings from archival data
  • 2022
  • In: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 119:30
  • Journal article (peer-reviewed)abstract
    • This initiative examined systematically the extent to which a large set of archival research findings generalizes across contexts. We repeated the key analyses for 29 original strategic management effects in the same context (direct reproduction) as well as in 52 novel time periods and geographies; 45% of the reproductions returned results matching the original reports together with 55% of tests in different spans of years and 40% of tests in novel geographies. Some original findings were associated with multiple new tests. Reproducibility was the best predictor of generalizability-for the findings that proved directly reproducible, 84% emerged in other available time periods and 57% emerged in other geographies. Overall, only limited empirical evidence emerged for context sensitivity. In a forecasting survey, independent scientists were able to anticipate which effects would find support in tests in new samples. 
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  • Result 1-10 of 103
Type of publication
journal article (96)
conference paper (5)
research review (2)
Type of content
peer-reviewed (94)
other academic/artistic (9)
Author/Editor
Wisse, Laura E.M. (19)
Xie, Long (18)
Yushkevich, Paul A. (17)
Lagergren, J (9)
Liu, Y. (7)
Liu, J. (7)
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Santoni, G (7)
Xie, SH (7)
Ness-Jensen, E (7)
Chen, N. (6)
Grossman, Murray (6)
Zhang, H. (5)
Jonas, JB (5)
Kim, YJ (5)
Suzuki, H. (5)
Magnusson, PKE (5)
Xie, L. (5)
Trojanowski, John Q (5)
Xie, T (5)
Chen, X. (4)
Xie, S. (4)
Han, H. (4)
Li, J. (4)
Xie, Y. (4)
Peters, A (4)
Wang, Y. (4)
Kim, D. (4)
Rezaei, N (4)
Khan, A. (4)
Abolhassani, H (4)
Ali, M (4)
Kivimaki, M (4)
Kumar, M (4)
Mirzaei, M (4)
Sahebkar, A (4)
Shaheen, AA (4)
Wang, YP (4)
Wang, P. (4)
Loos, RJF (4)
Sun, Y (4)
Franke, A (4)
Harley, JB (4)
Zhou, XJ (4)
Åström, Mats E., 196 ... (4)
Goel, A. (4)
Novak, J. (4)
Floege, J (4)
Hripcsak, G. (4)
Kiryluk, K (4)
Yu, Changxun, 1983- (4)
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University
Karolinska Institutet (49)
Lund University (27)
University of Gothenburg (11)
Uppsala University (11)
Stockholm University (9)
Umeå University (8)
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Royal Institute of Technology (8)
Linnaeus University (4)
Linköping University (3)
Chalmers University of Technology (3)
Högskolan Dalarna (3)
Örebro University (2)
Malmö University (2)
Swedish Museum of Natural History (2)
Swedish University of Agricultural Sciences (2)
University West (1)
Stockholm School of Economics (1)
The Swedish School of Sport and Health Sciences (1)
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Language
English (103)
Research subject (UKÄ/SCB)
Medical and Health Sciences (38)
Natural sciences (28)
Engineering and Technology (7)
Social Sciences (3)
Humanities (2)
Agricultural Sciences (1)

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