Results 11 to 20 of about 1,237 (85)

An Enhanced Nonlinear Critical Gradient for Electron Turbulent Transport due to Reversed Magnetic Shear [PDF]

, 1999
The first nonlinear gyrokinetic simulations of electron internal transport barriers (e-ITBs) in the National Spherical Torus Experiment show that reversed magnetic shear can suppress thermal transport by increasing the nonlinear critical gradient for ...
Peterson, J. L., Hammett, G. W., Mikkelsen, D. R., Yuh, H. Y., Candy, J., Guttenfelder, W., Kaye, S. M., LeBlanc, B.   +7 more
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A collective scattering system for measuring electron gyroscale fluctuations on the National Spherical Torus Experiment [PDF]

, 2019
A collective scattering system has been installed on the National Spherical Torus Experiment (NSTX) to measure electron gyroscale fluctuations in NSTX plasmas. The system measures fluctuations with k(perpendicular to)rho(e)less than or similar to 0.6 and
Domier, CW, Lee, W, Luhmann, NC, Mazzucato, E, Park, HK, Smith, DR   +5 more
core   +1 more source

Modeling of lithium granule injection in NSTX using M3D-C1 [PDF]

, 2017
In this paper, we present simulations of pedestal control by lithium granule injection (LGI) in NSTX. A model for small granule ablation has been implemented in the M3D-C1 code (Jardin et al 2012 Comput. Sci.
A. Fil, Bortolon A., Bortolon A., E. Kolemen, Hawryluk R.J., Jardin S.C., Mansfield D.K., N. Ferraro, Nazikian R., P.B. Parks, Parks P.B., Parks P.B., R. Lunsford, R. Maingi, S. Jardin   +14 more
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Experimental vertical stability studies for ITER performance and design [PDF]

, 2009
Operating experimental devices have provided key inputs to the design process for ITER axisymmetric control. In particular, experiments have quantified controllability and robustness requirements in the presence of realistic noise and disturbance ...
, , A. Portone, A.S. Welander, Crotinger J.A., D.A. Gates, D.A. Humphreys, E. Kolemen, F. Sartori, Ferrara M., G.L. Jackson, Gribov Y., Humphreys D.A., I.H. Hutchinson, J. Lister, J.A. Leuer, Jackson G.L., L.D. Pearlstein, L.L. LoDestro, M. Ferrara, M.L. Walker, N. Eidietis, Portone A., Portone A., Portone A., S.M. Wolfe, Sips A.C.C., Sugihara M., T.A. Casper, W.H. Meyer   +29 more
core   +1 more source

Non-thermal processes in coronae and beyond [PDF]

, 2012
This contribution summarizes the splinter session "Non-thermal processes in coronae and beyond" held at the Cool Stars 17 workshop in Barcelona in 2012.
Beiersdorfer, Bryans, Carter, Carter, Dennerl, Foster, Fuhrmeister, Güdel, Güdel, Hudson, Kowalski, Landi, Miceli, Neupert, Smith, Townsley, Townsley, Wolk   +17 more
core   +1 more source

Full-$f$ gyrokinetic simulation of turbulence in a helical open-field-line plasma

, 2018
Curvature-driven turbulence in a helical open-field-line plasma is investigated using electrostatic five-dimensional gyrokinetic continuum simulations in an all-bad-curvature helical-slab geometry.
Hakim, Ammar, Hammett, Gregory W., Shi, Eric L., Stoltzfus-Dueck, Timothy   +3 more
core   +1 more source

Fabrication of the 0.346 THz BWO for Plasma Diagnostic [PDF]

, 2017
Nuclear fusion is probably the most demanding challenge the scientific community is facing. The plasma is a delicate material that has to be properly shaped to achieve a high efficiency fusion process.
Feng, Jinjun, Tang, Ye, Gamzina, Diana, Li, Xiang, Huang, Xuejiao, Popovic, Branko, Himes, Logan, Barchfeld, Robert, Li, Hanyan, Pan, Pan, Letizia, Rosa, Paoloni, Claudio, Luhmann Jr., Neville C.   +12 more
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Role of Radio Frequency and Microwaves in Magnetic Fusion Plasma Research [PDF]

, 2017
The role of electromagnetic (EM) waves in magnetic fusion plasma—ranging from radio frequency (RF) to microwaves—has been extremely important, and understanding of EM wave propagation and related technology in this field has ...
Hawryluk, Hutchinson, Stix
core   +2 more sources

A versatile trigger and synchronization module with IEEE1588 capabilities and EPICS support. [PDF]

, 2010
Event timing and synchronization are two key aspects to improve in the implementation of distributed data acquisition (dDAQ) systems such as the ones used in fusion experiments.
Barrera, Bashore, Chevtsov, E. Barrera, G. de Arcas, International Standard, J. Borrego, J. Vega, J.M. López, Kim, Kraimer, López, M. Ruiz, Ruiz   +13 more
core   +2 more sources

Effect of kinetic resonances on the stability of Resistive Wall Mode in Reversed Field Pinch [PDF]

, 2011
The kinetic effects, due to the mode resonance with thermal particle drift motions in the reversed field pinch (RFP) plasmas, are numerically investigated for the stability of the resistive wall mode, using a non-perturbative MHD-kinetic hybrid ...
Alper B, Bishop C M, Bolzonella T, D Yadykin, Gregoratto D, Gryaznevich M, Guazzotto L, Liu Y Q, Menard J E, Okabayashi M, R Paccagnella, Y Q Liu   +11 more
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