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Träfflista för sökning "WFRF:(Bradley T) "

Search: WFRF:(Bradley T)

  • Result 1-10 of 257
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1.
  • Niemi, MEK, et al. (author)
  • 2021
  • swepub:Mat__t
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2.
  • Kanai, M, et al. (author)
  • 2023
  • swepub:Mat__t
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  • 2021
  • swepub:Mat__t
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7.
  • 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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9.
  • Abbasi, R., et al. (author)
  • First search for extremely high energy cosmogenic neutrinos with the IceCube Neutrino Observatory
  • 2010
  • In: Physical review. D, Particles, fields, gravitation, and cosmology. - 1550-7998. ; 82:7, s. 072003-
  • Journal article (peer-reviewed)abstract
    • We report on the results of the search for extremely-high energy neutrinos with energies above 10(7) GeV obtained with the partially (similar to 30%) constructed IceCube in 2007. From the absence of signal events in the sample of 242.1 days of effective live time, we derive a 90% C.L. model independent differential upper limit based on the number of signal events per energy decade at E-2 phi(ve+v mu+v tau) similar or equal to 1.4 x 10(-6) GeV cm(-2) sec(-1) sr(-1) for neutrinos in the energy range from 3 x 10(7) to 3 x 10(9) GeV.
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10.
  • Abbasi, R., et al. (author)
  • Limits on a muon flux from Kaluza-Klein dark matter annihilations in the Sun from the IceCube 22-string detector
  • 2010
  • In: Physical Review D. - 1550-7998 .- 1550-2368. ; 81:5, s. 057101-
  • Journal article (peer-reviewed)abstract
    • A search for muon neutrinos from Kaluza-Klein dark matter annihilations in the Sun has been performed with the 22-string configuration of the IceCube neutrino detector using data collected in 104.3 days of live time in 2007. No excess over the expected atmospheric background has been observed. Upper limits have been obtained on the annihilation rate of captured lightest Kaluza-Klein particle (LKP) WIMPs in the Sun and converted to limits on the LKP-proton cross sections for LKP masses in the range 250-3000 GeV. These results are the most stringent limits to date on LKP annihilation in the Sun.
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  • Result 1-10 of 257
Type of publication
journal article (214)
conference paper (27)
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other publication (2)
book chapter (2)
Type of content
peer-reviewed (224)
other academic/artistic (30)
Author/Editor
Blennow, Kaj, 1958 (16)
Adams, J. (16)
Hanson, K. (16)
Hultqvist, Klas (15)
Bohm, Christian (14)
Kolanoski, H. (14)
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Sander, H. G. (14)
Koepke, L. (14)
Bai, X. (14)
Beattie, K. (14)
Landsman, H. (14)
Rizzo, A. (14)
Kowalski, M. (14)
Van Eijndhoven, N. (14)
Schlenstedt, S. (14)
Auffenberg, J. (14)
Bay, R. (14)
Berghaus, P. (14)
Berley, D. (14)
Bernardini, E. (14)
Bissok, M. (14)
Blaufuss, E. (14)
Braun, J. (14)
Christy, B. (14)
De Clercq, C. (14)
Desiati, P. (14)
DeYoung, T. (14)
Fadiran, O. (14)
Filimonov, K. (14)
Gallagher, J. (14)
Gerhardt, L. (14)
Gladstone, L. (14)
Goldschmidt, A. (14)
Grant, D. (14)
Ha, C. (14)
Walck, Christian (14)
Halzen, F. (14)
Helbing, K. (14)
Hickford, S. (14)
Hoshina, K. (14)
Huelsnitz, W. (14)
Hulth, Per Olof (14)
Hultqvist, K. (14)
Ishihara, A. (14)
Karg, T. (14)
Karle, A. (14)
Kiryluk, J. (14)
Kohnen, G. (14)
Kuwabara, T. (14)
Labare, M. (14)
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University
Karolinska Institutet (81)
Uppsala University (78)
Stockholm University (53)
University of Gothenburg (42)
Lund University (31)
Umeå University (11)
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Linköping University (10)
Chalmers University of Technology (10)
Linnaeus University (9)
Royal Institute of Technology (7)
Swedish University of Agricultural Sciences (6)
Högskolan Dalarna (4)
Karlstad University (2)
Halmstad University (1)
Örebro University (1)
Malmö University (1)
Stockholm School of Economics (1)
IVL Swedish Environmental Research Institute (1)
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Language
English (256)
Undefined language (1)
Research subject (UKÄ/SCB)
Natural sciences (100)
Medical and Health Sciences (77)
Social Sciences (10)
Engineering and Technology (5)
Humanities (3)
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