Results 51 to 60 of about 1,608 (195)

PRINCETON PLASMA PHYSICS LABORATORY PRINCETON UNIVERSITY, PRINCETON, NEW JERSEY PPPL-3822 PPPL-3822 UC-70 Diagnostic Development for ST Plasmas on NSTX Availability Diagnostic Development for ST Plasmas on NSTX*

, 2020
Spherical tokamaks (STs) have much lower aspect ratio (a/R) and lower toroidal magnetic field, relative to tokamaks and stellarators. This paper will highlight some of the challenges and opportunities these features pose in the diagnosis of ST plasmas on
Nstx Team, D Johnson
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Overview of NSTX Upgrade initial results and modelling highlights [PDF]

, 2017
The National Spherical Torus Experiment (NSTX) has undergone a major upgrade, and the NSTX Upgrade (NSTX-U) Project was completed in the summer of 2015. NSTX-U first plasma was subsequently achieved, diagnostic and control systems have been commissioned,
Domier, C., Taylor, G, Soukhanovskii, V., Goumiri, I., G. Canal, Gray, T, M. Finkenthal, Kaita, R, Stutman, D, Reinke, M., M. Reinke, LaHaye, R.J., Ono, M, A. Diallo, Wang, Z., Schuster, E., W. Heidbrink, Soukhanovskii, V, Berkery, J.W., Perkins, R., Schmitz, O., Podesta, M, Heidbrink, W, R. Kaita, M. Podesta, Stutman, D., Raman, R, D. Brennan, Wirth, B., Zweben, SJ, J. Canik, Fredrickson, E., Myers, CE, Battaglia, D.J., Frerichs, H., M.A. Jaworski, Rhodes, T., B. Wirth, Sechrest, Y., E. Fredrickson, Jarboe, T, Mckee, G, Bedoya, F., Allain, JP, V. Soukhanovskii, Finkenthal, M., Evans, T, L. Delgado-Aparicio, D. Gates, Evans, T., Kriete, DM, Myra, J, Tritz, K, Raman, R., Smith, DR, Ren, Y., Wang, W, Wang, Z, Delgado-Aparicio, L, Battaglia, DJ, Maingi, R., Capece, A, Menard, J.E., R.E. Bell, Diallo, A, Ebrahimi, F., Berkery, JW, Hosea, J., Liu, D, A. Capece, Bedoya, F, F. Bedoya, Kaye, SM, N. Ferraro, J. Myra, Park, J-K, Poli, F, N. Luhmann, Gerhardt, S., Gan, K, Russell, D, T. Rhodes, Myra, J., C. Domier, D. Humphreys, Kubota, S., Sechrest, Y, Jaworski, MA, R. Perkins, Poli, F., G. Taylor, Ren, Y, M.D. Boyer, Y. Ren, Guttenfelder, W, C.E. Myers, F. Ebrahimi, Scotti, F., Stoltzfus-Dueck, T, Jarboe, T., Ono, M., Luhmann Jr., N., R.J. La Haye, Schuster, E, K. Gan, Andre, R, R. Andre, Heidbrink, W., Kubota, S, C.H. Skinner, La Haye, RJ, Rowley, C, B.P. LeBlanc, M. Ono, Delgado-Aparicio, L., Fonck, R, Jardin, S, Stratton, B, Stoltzfus-Dueck, T., Gerhardt, S, Guttenfelder, W., Koel, B, Perkins, R, D.M. Kriete, R. Fonck, S. Gerhardt, Darrow, D., Kolemen, Egemen, Bhattacharjee, A, J.-K. Park, A. Bhattacharjee, R. Maingi, Jaworski, M.A., R. Maqueda, Jardin, S., Bell, R.E., Ferron, J, Meier, E, Fonck, R., Rowley, C., Z. Wang, J. Hosea, S.A. Sabbagh, Sabbagh, SA, Maqueda, R., C. Rowley, Maqueda, R, J.P. Allain, J. Riquezes, Zweben, S.J., Mueller, D., H. Yuh, D. Mueller, F. Poli, Darrow, D, Goumiri, I, Myers, C.E., Buttery, R, Finkenthal, M, Gates, D, E. Schuster, I. Waters, Scotti, F, Allain, J.P., Frerichs, H, E. Kolemen, Smith, D.R., Ahn, J-W, R. Lunsford, Humphreys, D, Canal, G., O. Schmitz, J.-W. Ahn, N. Bertelli, Canik, J., Kolemen, E., S. Ku, Ferrraro, N., Boyer, MD, S.J. Zweben, Stratton, B., C.S. Chang, Menard, JE, Kolemen, E, F. Scotti, Brennan, D., Riquezes, J., H. Frerichs, Bertelli, N, W. Wang, Belova, E., Kaye, S.M., Lunsford, R, Levinton, F., W. Guttenfelder, Chang, C.S., Yuh, H, Crocker, N., Liu, D., B. Koel, Koel, B., D. Liu, B. Stratton, T. Gray, Waters, I., McKee, G., R. Raman, Tritz, K., Ethier, S, Levinton, F, S. Jardin, Park, J.-K., Yuh, H., N. Gorelenkov, Ferron, J., Bell, RE, Russell, D., Riquezes, J, Bertelli, N., Y. Sechrest, Rhodes, T, Capece, A., Andre, R., Ethier, S., R. Barchfeld, Boyle, D., Chang, CS, LeBlanc, BP, Schmitz, O, S. Kubota, Barchfeld, R., Skinner, C.H., Sabbagh, S.A., Humphreys, D., Wirth, B, J.E. Menard, Meier, E., Diallo, A., Podesta, M., D.J. Battaglia, Luhmann, N, Domier, C, Canik, J, Barchfeld, R, Mueller, D, Kriete, D.M., Gates, D., Taylor, G., Ahn, J.-W., Hosea, J, N. Crocker, P. Beiersdorfer, T. Stoltzfus-Dueck, Gorelenkov, N, Ku, S., Ferraro, N, D. Darrow, Beiersdorfer, P, Lunsford, R., Beiersdorfer, P., Waters, I, Ku, S, G. McKee, Bhattacharjee, A., Brennan, D, Buttery, R., R. Buttery, J. Ferron, Boyer, M.D., J.W. Berkery, E. Meier, Belova, E, Crocker, N, E. Belova, Kaita, R., Ebrahimi, F, Fredrickson, E, Maingi, R, D.R. Smith, F. Levinton, T. Jarboe, Gan, K., LeBlanc, B.P., Gray, T., S.M. Kaye, I. Goumiri, D. Russell, Canal, G, T. Evans, Gorelenkov, N., K. Tritz, D. Stutman, Wang, W., Skinner, CH, S. Ethier, Reinke, M   +295 more
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Diagnostic Development on NSTX

, 2020
-Diagnostics are described which are currently installed or under active development for the newly commissioned NSTX device. The low aspect ratio (R/a£1.3) and low toroidal field (0.1-0.3T) used in this device dictate adaptations in many standard ...
Nstx Team, A L Roquemore, R Kaita, D Johnson   +3 more
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Toroidal asymmetries in divertor impurity influxes in NSTX

Nuclear Materials and Energy, 2017
Toroidal asymmetries in divertor carbon and lithium influxes were observed in NSTX, due to toroidal differences in surface composition, tile leading edges, externally-applied three-dimensional (3D) fields and toroidally-localized edge plasma ...
F. Scotti, V.A. Soukhanovskii, J.-W. Ahn, A.G. McLean, R. Kaita   +4 more
doaj   +1 more source

Analysis of NSTX TF Joint Voltage Measurements [PDF]

, 2005
This report presents findings of analyses of recorded current and voltage data associated with 72 electrical joints operating at high current and high mechanical stress. The analysis goal was to characterize the mechanical behavior of each joint and thus
Woolley, R.
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Comparing lithium vapor box designs in a high heat flux scenario using SOLPS-ITER

Nuclear Materials and Energy, 2023
SOLPS calculations of lithium vapor box divertor designs on NSTX-U are presented. Predictive high power simulations (Pheat=10 MW, qpeakunmitigated∼65 MW/m2) are used to compare and contrast two divertor designs.
E.D. Emdee, R.J. Goldston
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

Predictive modeling of a lithium vapor box divertor in NSTX-U using SOLPS-ITER

Nuclear Materials and Energy, 2021
The unmitigated heat flux in attached operation of a fusion power plant is predicted to be destructive to any solid divertor surface. Detachment, whereby the plasma pressure drops significantly before reaching the divertor target thus greatly reducing ...
E.D. Emdee, R.J. Goldston, J.D Lore, X. Zhang   +3 more
doaj   +1 more source

NSTX Tangential Divertor Camera [PDF]

, 2004
Strong magnetic field shear around the divertor x-point is numerically predicted to lead to strong spatial asymmetries in turbulence driven particle fluxes. To visualize the turbulence and associated impurity line emission near the lower x-point region, a new tangential observation port has been recently installed on NSTX.
Roquemore, A. L., Biewer, Ted, Johnson, D., Zweben, S. J., Nishino, Nobuhiro, Soukhanovskii, V. A.   +5 more
openaire   +2 more sources

The effect of gas injection location on a lithium vapor box divertor in NSTX-U

Nuclear Fusion, 2023
The lithium vapor box divertor is a proposed divertor design that will minimize contamination of the upstream plasma in a fusion device, while also ensuring protection of the target.
E.D. Emdee, R.J. Goldston
doaj   +1 more source