Zobrazeno 1 - 10
of 22
pro vyhledávání: '"David Pace"'
Autor:
David Pace, Rebecca Masline, J.G. Watkins, Auna Moser, J.L. Barton, Daniel Thomas, Igor Bykov, Andreas Wingen, Houyang Guo, Huiqian Wang
Publikováno v:
Nuclear Materials and Energy, Vol 18, Iss, Pp 46-49 (2019)
We report measurements of a+/− 5 mm toroidal variation of the outer strike point radial position using an array of three identical Langmuir probes distributed at 90° intervals around the torus (90°, 180°, 270°). The strike point radial location
Publikováno v:
IEEE Transactions on Plasma Science. 46:1102-1107
A significant engineering upgrade of the DIII-D neutral beam system has recently completed, providing ability to smoothly and independently vary the beam voltage and current. This enables greater control of the injected beam power, torque, and plasma
Autor:
S.L. Allen, J.R. Ferron, A.W. Leonard, Houyang Guo, J.G. Watkins, David Pace, Adam McLean, T.H. Osborne, Francesca Turco, M. A. Makowski, T.W. Petrie, M.E. Fenstermacher, M. A. VanZeeland, C. T. Holcomb, W. M. Solomon, C.J. Lasnier, T.C. Luce
Publikováno v:
Nuclear Materials and Energy, Vol 12, Iss, Pp 1141-1145 (2017)
Significant challenges to reducing divertor heat flux in highly powered near-double null divertor (DND) hybrid plasmas, while still maintaining both high performance metrics and low enough density for application of RF heating, are identified. For th
Autor:
J. T. Scoville, David Pace, Brendan M. Crowley, Robert D. Johnson, D.H. Kellman, C.J. Pawley, J. Rauch
Publikováno v:
Fusion Science and Technology. :1-5
On the DIII-D National Fusion Facility tokamak plasma diagnostics continue to improve and experiments increase in complexity. Hence the utility of dynamic control of the beam energy (and therefore also the injected torque, ion heating fraction, etc.)
Autor:
M. A. Van Zeeland, Christopher Holland, T. L. Rhodes, Choongki Sung, C.C. Petty, Kathreen Thome, David Pace, Sterling Smith, G. J. Kramer, Joseph McClenaghan, Long Zeng, Y. B. Zhu, Francesca Turco, Brian Grierson, Xiaodi Du, G.R. McKee, M. Knolker
Publikováno v:
Nuclear Fusion. 61:036036
The thermal and fast-ion transport properties of DIII-D steady-state hybrid discharges with normalized beta β N ≳ 3 are studied at low injected torque and an increased electron to ion temperature ratio T e/T i. Linear stability analysis performed
Publikováno v:
Journal of Fusion Energy. 35:54-62
The march towards electricity production through tokamaks requires the construction of new facilities and the inevitable replacement of the previous generation. There are, however, research topics that are better suited to the existing tokamaks, area
Autor:
H. Reimerdes, Anna Salmi, T.K. Gray, R. J. Buttery, R.J. La Haye, Joseph Snipes, M. A. Van Zeeland, Jeremy Hanson, Brian Grierson, Daisuke Shiraki, J.S. deGrassie, G. J. Kramer, David Pace, W. M. Solomon, M.J. Lanctot, Nikolas Logan, J. D. King, E. J. Strait, T. Tala, A.M. Garofalo, Carlos Paz-Soldan, Jinseop Park
Publikováno v:
Lanctot, M, Snipes, J A, Reimerdes, H, Paz-Soldan, C, Logan, N, Hanson, J M, Buttery, RJ, deGrassie, J, Garofalo, A M, Gray, T K, Grierson, B A, King, J D, Kramer, G J, La Haye, R, Pace, D C, Park, J K, Salmi, A, Shiraki, S, Strait, E J, Solomon, W M, Tala, T & Van Zeeland, M A 2017, ' A path to stable low-torque plasma operation in ITER with test blanket modules ', Nuclear Fusion, vol. 57, no. 3, 036004 . https://doi.org/10.1088/1741-4326/57/3/036004
New experiments in the low-torque ITER Q = 10 scenario on DIII-D demonstrate that n = 1 magnetic fields from a single row of ex-vessel control coils enable operation at ITER performance metrics in the presence of applied non-axisymmetric magnetic fie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60cdcb2a4ff03b3978c513f5f34178cc
https://cris.vtt.fi/en/publications/e892fdee-adf8-4554-b511-3c736bb2a4f3
https://cris.vtt.fi/en/publications/e892fdee-adf8-4554-b511-3c736bb2a4f3
Publikováno v:
Bolte, NG; Heidbrink, WW; Pace, D; Van Zeeland, M; & Chen, X. (2016). Measurement and simulation of passive fast-ion D-alpha emission from the DIII-D tokamak. NUCLEAR FUSION, 56(11). doi: 10.1088/0029-5515/56/11/112023. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/9sr7c8t9
Spectra of passive fast-ion D-alpha (FIDA) light from beam ions that charge exchange with background neutrals are measured and simulated. The fast ions come from three sources: ions that pass through the diagnostic sightlines on their first full orbi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b86a1e1b070f0bd948b15fe716062732
http://www.escholarship.org/uc/item/9sr7c8t9
http://www.escholarship.org/uc/item/9sr7c8t9
Publikováno v:
Nuclear Fusion. 59:086011
Autor:
Shaun Haskey, David Pace, J.R. Ferron, C.J. Pawley, Keith Erickson, J. T. Scoville, Raffi Nazikian, J. Rauch, B. J. Crowley, Mark D. Boyer, D.A. Humphreys, R. P. Johnson, Brian Grierson
Publikováno v:
Nuclear Fusion. 59:076004