Zobrazeno 1 - 10
of 28
pro vyhledávání: '"William Wehner"'
Publikováno v:
IEEE Transactions on Plasma Science. 50:4157-4164
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b670cffbf0d4eed5266ae7a122ebf8a3
https://doi.org/10.1109/tps.2022.3198596
https://doi.org/10.1109/tps.2022.3198596
Autor:
M.L. Walker, Andres Pajares, N.W. Eidietis, A.W. Hyatt, Eugenio Schuster, R.J. La Haye, D.A. Humphreys, J.R. Ferron, J.L. Barr, A.S. Welander, William Wehner
Publikováno v:
Fusion Engineering and Design. 146:559-562
There is an increasing need for integrating individual plasma-control algorithms with the ultimate goal of simultaneously regulating more than one plasma property. Some of these integrated-control solutions should have the capability of arbitrating t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f96aff973a5138aa4818db62aa8ed262
https://doi.org/10.1016/j.fusengdes.2019.01.022
https://doi.org/10.1016/j.fusengdes.2019.01.022
Optimal current profile control for enhanced repeatability of L-mode and H-mode discharges in DIII-D
Autor:
Tim C. Luce, C. T. Holcomb, Justin Barton, Robert D. Johnson, Ben G. Penaflor, William Wehner, David Humphreys, Eugenio Schuster, J.R. Ferron, M Menno Lauret, Michael L. Walker
Publikováno v:
Fusion Engineering and Design. 123:513-517
In this work, model-based control techniques are used to obtain target current profiles in low-confinement-mode (L-mode) as well as high-confinement-mode (H-mode) DIII-D discharges. The control problem is formulated as a trajectory optimization probl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c4d17c7326652fe9e5a1910b0c6883f
https://doi.org/10.1016/j.fusengdes.2017.03.022
https://doi.org/10.1016/j.fusengdes.2017.03.022
Autor:
Robert D. Johnson, William Wehner, J.R. Ferron, Justin Barton, Wenyu Shi, D.A. Humphreys, T.C. Luce, Eugenio Schuster, Mark D. Boyer, M.L. Walker, D. Moreau, B.G. Penaflor
Publikováno v:
Fusion Engineering and Design. 117:39-57
A control-oriented, two-timescale, linear, dynamic, response model of the rotational transform ι profile and the normalized beta βN is proposed based on experimental data from the DIII-D tokamak. Dedicated system-identification experiments without
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71c06a4df152cfcd69d7f8d65253d282
https://doi.org/10.1016/j.fusengdes.2017.01.003
https://doi.org/10.1016/j.fusengdes.2017.01.003
Publikováno v:
Proceedings of the Water Environment Federation. 2017:583-599
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2006b94deadae20f29ab98c6ca2887db
https://doi.org/10.2175/193864717821495997
https://doi.org/10.2175/193864717821495997
Autor:
Christopher Holcomb, David Humphreys, M Menno Lauret, Michael L. Walker, Eugenio Schuster, J.R. Ferron, B.G. Penaflor, William Wehner, Robert D. Johnson, T.C. Luce
Publikováno v:
MED
One of the most promising candidates to produce clean nuclear fusion energy is the tokamak, a device magnetically confining an extremely hot plasma (i.e. an ionized gas) where the fusion reactions take place. To produce nuclear fusion energy using to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bb13fcc53f5f30dfa8b51c282c56f25
https://doi.org/10.1109/med.2017.7984102
https://doi.org/10.1109/med.2017.7984102
Publikováno v:
ACC
Tokamak plasma rotation is widely recognized for its importance to heat confinement and plasma stability. In this work we consider control of the plasma rotation profile with the aim of building a control strategy suitable for testing various rotatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b52a4510bcc9dba16976da4c4d0baea
https://doi.org/10.23919/acc.2017.7963709
https://doi.org/10.23919/acc.2017.7963709
Autor:
Mark D. Boyer, B.G. Penaflor, Eugenio Schuster, Robert D. Johnson, Justin Barton, J.R. Ferron, Michael L. Walker, Wenyu Shi, Tim C. Luce, D.A. Humphreys, William Wehner, Francesca Turco
Publikováno v:
IFAC Proceedings Volumes. 47:1568-1573
Control of the current profile in tokamak plasmas has been shown to play an important role in achieving advanced scenarios that could enable steady-state operation. The nonlinearity and spatially distributed nature of the current profile dynamics mot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f0aa98531c0953d0cd6f4643d563008
https://doi.org/10.3182/20140824-6-za-1003.01712
https://doi.org/10.3182/20140824-6-za-1003.01712
Autor:
Michael L. Walker, David Humphreys, Justin Barton, Wenyu Shi, Tim C. Luce, Francesca Turco, Eugenio Schuster, J.R. Ferron, Ben G. Penaflor, William Wehner, Robert D. Johnson
Publikováno v:
IFAC Proceedings Volumes. 47:10319-10324
Efficient, high-gain operation of a tokamak device requires the achievement of certain radial shapes for the toroidal current profile. The evolution in time of the toroidal current profile in tokamaks is related to the evolution of the poloidal magne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::559d474cd3148a0199bd6ef8eead7326
https://doi.org/10.3182/20140824-6-za-1003.02548
https://doi.org/10.3182/20140824-6-za-1003.02548
Autor:
Ben G. Penaflor, William Wehner, Justin Barton, Michael L. Walker, Mark D. Boyer, Tim C. Luce, Robert D. Johnson, Francesca Turco, J.R. Ferron, David Humphreys, Eugenio Schuster, Wenyu Shi
Publikováno v:
IFAC Proceedings Volumes. 47:5223-5228
Active closed-loop control of the plasma safety factor profile ( q -profile) and internal energy dynamics in nuclear fusion tokamak devices has the potential to significantly impact the success of the ITER project. These plasma properties are related
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51150aca7457ed9acf155ee5435d2ba0
https://doi.org/10.3182/20140824-6-za-1003.01718
https://doi.org/10.3182/20140824-6-za-1003.01718