Results 31 to 40 of about 3,538 (193)

Observations of Reduced Electron Gyroscale Fluctuations in National Spherical Torus Experiment H-Mode Plasmas with Large E X B Flow Shear [PDF]

, 2019
Electron gyroscale fluctuation measurements in National Spherical Torus Experiment H-mode plasmas with large toroidal rotation reveal fluctuations consistent with electron temperature gradient (ETG) turbulence.
Bell, RE, Domier, CW, Kaye, SM, LeBlanc, BP, Lee, W, Levinton, FM, Mazzucato, E, Menard, JE, N. C. Luhmann, Jr., Park, HK, Smith, DR, Yuh, H   +11 more
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Internal transport barriers in the National Spherical Torus Experiment [PDF]

, 2019
In the National Spherical Torus Experiment [M. Ono , Nucl. Fusion 41, 1435 (2001)], internal transport barriers (ITBs) are observed in reversed (negative) shear discharges where diffusivities for electron and ion thermal channels and momentum are reduced.
Bell, RE, C, Domier, CW, Hosea, JC, Kaye, SM, LeBlanc, BP, Lee, W, Levinton, FM, Luhmann, NC, Mazzucato, E, Park, HK, Peterson, JL, Smith, DR, Waltz, RE, y, J, Yuh, HY   +15 more
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CTI in NSTX, Proposal for Compact Toroid Injection in NSTX [PDF]

, 2008
This is the final Report summarizing the activities of the proposal to invetigate the potential of deep fueling a spherical torus or tokamak using high velocity injection of compact toroids.
openaire   +2 more sources

Modeling of lithium granule injection in NSTX with M3D-C1

Nuclear Materials and Energy, 2017
In this paper we present initial 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 [1], allowing the simulation of realistic Lithium granule injections ...
A. Fil, E. Kolemen, A. Bortolon, N. Ferraro, S. Jardin, P.B. Parks, R. Lunsford, R. Maingi   +7 more
doaj   +1 more source

MHD-blob correlations in NSTX

Physics of Plasmas, 2020
This paper describes a study of the cross-correlations between edge fluctuations as seen in the gas puff imaging (GPI) diagnostic and low frequency coherent magnetic fluctuations (MHD) in H-mode plasmas in NSTX. The main new result was that large blobs in the scrape-off-layer were significantly correlated with MHD activity in the 3–6 kHz range in 21 of
S. J. Zweben, E. D. Fredrickson, J. R. Myra, M. Podestà, F. Scotti   +4 more
openaire   +2 more sources

Initial studies of plasma facing component surface conditioning in the national spherical tokamak experiment upgrade with the materials analysis particle probe

Nuclear Materials and Energy, 2017
An innovative PFC diagnostic, the Materials Analysis Particle Probe (MAPP) was used to study the chemistry of Plasma Facing Components (PFCs) in the National Spherical Tokamak Experiment Upgrade (NSTX-U). NSTX-U used boronization as conditioning strategy
F. Bedoya, J.P. Allain, R. Kaita, C.H. Skinner, B.E. Koel, F. Scotti   +5 more
doaj   +1 more source

Ideal magnetohydrodynamic simulations of unmagnetized dense plasma jet injection into a hot strongly magnetized plasma

, 2011
We present results from three-dimensional ideal magnetohydrodynamic simulations of unmagnetized dense plasma jet injection into a uniform hot strongly magnetized plasma, with the aim of providing insight into core fueling of a tokamak with parameters ...
Arseniev, Bengtsson, Castel, Cheifetz, Goodin, H. Jin, Hamilton, Hara, Hara, Hotchkis, Hua, Hwang, Lhersonneau, Li, Luo, Möller, Nilsson, Orlandi, Rodriguez-Guzman, S.-Y. Yu, Sheihk, Sheikh, Sheikh, Sheline, Shizuma, Sieja, Skalski, Smith, Stephens, Sun, Urban, Urban, Velazquez, Verma, Wood, Wu, X.-H. Zhou, Y. Sun, Y.-C. Yang, Y.-H. Zhang, Y.-X. Liu, Yang, Yeoh   +42 more
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Onset of High-Harmonic Fast Wave Propagation in Annulus Geometry [PDF]

EPJ Web of Conferences
Previous experiments on NSTX have reported high-harmonic fast wave (HHFW) power losses in the scrape-off layer (SOL), with dependencies on the wave parallel wavenumber, plasma density, and magnetic field.
Baek Seung-Gyou, De Levante Rodriguez Ricardo, Bertelli Nicola, Bonoli Paul, Shiraiwa Syun’ichi   +4 more
doaj   +1 more source

Making of the NSTX Facility [PDF]

, 1999
The NSTX (National Spherical Torus Experiment) facility located at Princeton Plasma Physics Laboratory is the newest national fusion science experimental facility for the restructured US Fusion Energy Science Program. The NSTX project was approved in FY 97 as the first proof-of-principle national fusion facility dedicated to the spherical torus ...
Neumeyer, C., Ono, M., Kaye, S. M., Peng, Y. K. M., al, et   +4 more
openaire   +2 more sources

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
core   +1 more source