Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Keith H. Burrell"'
Autor:
Shaun Haskey, Theresa Wilks, Xi Chen, Brian Grierson, Colin Chrystal, Carlos Paz-Soldan, Tom Osborne, Keith H. Burrell, Darin Ernst
Publikováno v:
Nuclear Fusion. 60:086005
Recent experiments on DIII-D have shown it is possible to create and sustain wide pedestal quiescent H-mode (QH-mode) plasmas with zero net torque from neutral beam injection (NBI) for the full discharge duration. Wide pedestal QH-mode has many of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1cad3ec32977f6b4e27f4fe28cb338d
https://doi.org/10.1088/1741-4326/ab940d
https://doi.org/10.1088/1741-4326/ab940d
Autor:
Terry Rhodes, Kshitish Barada, Lei Zeng, W. A. Peebles, L. Bardoczi, Christopher Muscatello, Xi Chen, Keith H. Burrell
Publikováno v:
Physical Review Letters. 120
A new, long-lived limit cycle oscillation (LCO) regime has been observed in the edge of near zero torque high performance DIII-D tokamak plasma discharges. These LCOs are localized and composed of density turbulence, gradient drives, and E×B velocit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52d1367abcdbcdbd55fd378be3668a25
https://doi.org/10.1103/physrevlett.120.135002
https://doi.org/10.1103/physrevlett.120.135002
Autor:
T. H. Osborne, Saskia Mordijck, R.A. Moyer, J.A. Boedo, J. S. deGrassie, Oliver Schmitz, Anthony Leonard, Todd Evans, Keith H. Burrell, H. Frerichs, R. C. Wolf, M. J. Schaffer, P. Gohil, Detlev Reiter, M. E. Fenstermacher, M. W. Jakubowski, Larry R. Baylor, J. G. Watkins, C. J. Lasnier, Ezekial A Unterberg, U. Samm
Publikováno v:
Contributions to Plasma Physics. 50:701-707
Stochastic boundaries in fusion devices have been investigated in tokamaks, stellarators and reversed field pinch experiments for many years. However, since edge localized modes (ELMs) have been successfully eliminated in H-mode plasmas at the DIII-D
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f9d774cc67f54f047423e2eb8a2758c
https://doi.org/10.1002/ctpp.201000004
https://doi.org/10.1002/ctpp.201000004
Autor:
Brian Grierson, C.C. Petty, Lei Zeng, Sterling Smith, T.C. Luce, Keith H. Burrell, Alessandro Marinoni, Christopher Holland, Max E Austin
Publikováno v:
Nuclear Fusion. 58:026023
Two power scans were carried out in H-mode plasmas in DIII-D; one employed standard co-current neutral beam injection (NBI), while the other used a mixture of co-current and counter-current NBI to scan power while holding the torque to a low fixed va
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6b026a5ca5fb5c2ce14628552fe4a0f
https://doi.org/10.1088/1741-4326/aa9af7
https://doi.org/10.1088/1741-4326/aa9af7
Autor:
R.A. Moyer, H. R. Wilson, Xueqiao Xu, T.H. Osborne, Ming-Sheng Chu, P. B. Snyder, M.E. Fenstermacher, Anthony Leonard, Keith H. Burrell, Maxim Umansky, W.P. West
Publikováno v:
Nuclear Fusion. 47:961-968
Understanding the physics of the edge pedestal and edge localized modes (ELMs) is of great importance for ITER and the optimization of the tokamak concept. The peeling–ballooning model has quantitatively explained many observations, including ELM o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00575d127fb3935c444c0e37ee4621dc
https://doi.org/10.1088/0029-5515/47/8/030
https://doi.org/10.1088/0029-5515/47/8/030
Publikováno v:
The Review of scientific instruments. 86(10)
Neutral beam injection is used in tokamaks to heat, apply torque, drive non-inductive current, and diagnose plasmas. Neutral beam diagnostics need accurate spatial calibrations to benefit from the measurement localization provided by the neutral beam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dc7a061b6f562c37323768d4c75676f
https://pubmed.ncbi.nlm.nih.gov/26520957
https://pubmed.ncbi.nlm.nih.gov/26520957
Autor:
P. Gohil, P. B. Snyder, J.M. Moller, Daniel Thomas, Anthony Leonard, Keith H. Burrell, W. P. West, Jan Weiland, T.A. Casper, E. J. Doyle, C.J. Lasnier, Tom Osborne
Publikováno v:
Plasma Physics and Controlled Fusion. 48:A35-A43
Quiescent double barrier (QDB) conditions often form when an internal transport barrier is created with high-power neutral-beam injection into a quiescent H-mode (QH) plasma. These QH-modes offer an attractive, high-performance operating scenario for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::299118ec094ca9366906d62507008c6f
https://doi.org/10.1088/0741-3335/48/5a/s02
https://doi.org/10.1088/0741-3335/48/5a/s02
Publikováno v:
Review of Scientific Instruments. 75:3481-3486
An approach has been implemented on the DIII-D tokamak to allow the correct determination of the plasma poloidal velocity from charge exchange spectroscopy measurements. Unlike usual techniques, the need for detailed atomic physics calculations to pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6829b043b24838d484e04373fb30767
https://doi.org/10.1063/1.1790042
https://doi.org/10.1063/1.1790042
Publikováno v:
Review of Scientific Instruments. 74:5084-5089
An experimental technique is presented that permits diagnostics viewing light from the plasma edge to be spatially calibrated relative to one another. By sweeping the plasma edge, each chord of each diagnostic sweeps out a portion of the light emissi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d3fd602c950b54e9ac0eff11800a5c8
https://doi.org/10.1063/1.1623622
https://doi.org/10.1063/1.1623622
Autor:
G. R. McKee, Xueqiao Xu, Dmitry Rudakov, M. W. Jakubowski, R. J. Fonck, Klaus Hallatschek, R.A. Moyer, W. Nevins, Keith H. Burrell
Publikováno v:
Plasma Physics and Controlled Fusion. 45:A477-A485
Zonal flows, thought crucial to the saturation and self-regulation of turbulence and turbulent transport in magnetically confined plasmas, have been observed and characterized in the edge region of DIII-D plasmas. These flows exhibit temperature scal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65a81f0b745ca8d2d42d195b2774309d
https://doi.org/10.1088/0741-3335/45/12a/031
https://doi.org/10.1088/0741-3335/45/12a/031