Search Results - "Greenfield, C M"

Quiescent double barrier regime in the DIII-D tokamak by Greenfield, C M, Burrell, K H, DeBoo, J C, Doyle, E J, Stallard, B W, Synakowski, E J, Fenzi, C, Gohil, P, Groebner, R J, Lao, L L, Makowski, M A, McKee, G R, Moyer, R A, Rettig, C L, Rhodes, T L, Pinsker, R I, Staebler, G M, West, W P

“…A new sustained high-performance regime, combining discrete edge and core transport barriers, has been discovered in the DIII-D tokamak. Edge localized modes…”
Get full text

Plasma impurity content, gas fueling, and exhaust on DIII-D over extended periods between boronizations by West, W.P., Groth, M., Hyatt, A.W., Brooks, N.H., Jackson, G.L., Wade, M.R., Greenfield, C.M.

“…During the 2006 and 2007 DIII-D experimental campaigns the rate of boronization events was reduced significantly from past campaigns with no detrimental…”
Get full text

Modification of the current profile in high-performance plasmas using off-axis electron-cyclotron-current drive in DIII-D by Murakami, M, Wade, M R, Greenfield, C M, Luce, T C, Makowski, M A, Petty, C C, DeBoo, J C, Ferron, J R, Jayakumar, R J, Lao, L L, Lohr, J, Politzer, P A, Prater, R, St John, H E

“…Recent DIII-D experiments using off-axis electron cyclotron current drive (ECCD) have demonstrated the ability to modify the current profile in a plasma with…”
Get full text

Examining African American and Caucasian Interaction Patterns Within Computer-Mediated Communication Environments by Bellamy, Al, Greenfield, M. C.

“…This study explored the extent to which student emotion management factors and normative orientation (belief that chat rooms have normative standards of…”
Get full text

Slow L-H transitions in DIII-D plasmas by Colchin, R J, Schaffer, M J, Carreras, B A, McKee, G R, Maingi, R, Carlstrom, T N, Rudakov, D L, Greenfield, C M, Rhodes, T L, Doyle, E J, Brooks, N H, Austin, M E

“…The transition from the low to the high mode of plasma confinement ( L-H transition) is studied in the DIII-D by an experimental technique which allows an…”
Get full text

Internal Transport Barriers in JET Deuterium-Tritium Plasmas by Gormezano, C., Baranov, Y. F., Challis, C. D., Coffey, I., Cottrell, G. A., Ekedahl, A. C., Greenfield, C. M., Howman, A. C., Huysmans, G. T. A., Keilhacker, M., Litaudon, X., Luce, T. C., Rice, B. W., Rochard, F., Sadler, G. J., Schild, P. A. J., Sips, A. C. C., Söldner, F. X., Strait, E. J., Tubbing, B. J. D., Wade, M. R., Ward, D. J.

Get full text

Regime of very high confinement in the boronized DIII-D Tokamak by JACKSON, G. L, WINTER, J, LAO, L. L, LIPPMANN, S. I, OSBORNE, T. H, PETRIE, T. W>, PHILLIPS, J, JAMES, R, SCHISSEL, D. P, STRAIT, E. J, TURNBULL, A. D, WEST, W. P, TAYLOR, T. S, TEAM, D. D, BURRELL, K. H, DEBOO, J. C, GREENFIELD, C. M, GROEBNER, R. J, HODAPP, T, HOLTROP, K, LAZARUS, E. A

“…Following boronization, tokamak discharges in DIII-D have been obtained with confinement times up to a factor of 3.5 above the ITER89-P {ital L}-mode scaling…”
Get full text

Alpha-channeling simulation experiment in the DIII-D tokamak by WONG, K. L, BUDNY, R, NAZIKIAN, R, PETTY, C. C, GREENFIELD, C. M, HEIDBRINK, W. W, RUSKOV, E

Get full text

Fueling of QH-mode plasmas on DIII-D with pellets and gas by Baylor, L.R., Jernigan, T.C., Burrell, K.H., Combs, S.K., Doyle, E.J., Gohil, P., Greenfield, C.M., Lasnier, C.J., West, W.P.

“…The quiescent high confinement mode (QH-mode) discovered on DIII-D [K.H. Burrell et al. Phys. Plasmas 8 (2001) 2153; C.M. Greenfield et al. Phys. Rev. Lett. 86…”
Get full text

Progress towards high-performance steady-state operation on DIII-D by Greenfield, C.M., Murakami, M., Garofalo, A.M., Doyle, E.J., Ferron, J.R., Wade, M.R., Austin, M.E., Allen, S.L., Burrell, K.H., Casper, T.A., DeBoo, J.C., Gohil, P., Gorelov, I.A., Groebner, R.J., Heidbrink, W.W., Hyatt, A.W., Jackson, G.L., Jayakumar, R.J., Kajiwara, K., Kessel, C.E., Kinsey, J.E., Kim, J.Y., La Haye, R.J., Lao, L.L., Lohr, J., Luce, T.C., Luo, Y., Makowski, M.A., Mazon, D., McKee, G.R., Okabayashi, M., Osborne, T.H., Petty, C.C., Petrie, T.W., Pinsker, R.I., Prater, R., Politzer, P.A., Reimerdes, H., Rhodes, T.L., Sips, A.C.C., Scoville, J.T., Solomon, W.M., Staebler, G.M., St. John, H.E., Strait, E.J., Taylor, T.S., Turnbull, A.D., Van Zeeland, M.A., Wang, G., West, W.P., Zeng, L.

“…Advanced Tokamak research in DIII-D seeks to develop a scientific basis for steady-state high-performance tokamak operation. Fully noninductive ( f NI ≈ 100%)…”
Get full text

Variation in particle pumping due to changes in topology in high performance DIII-D plasmas by Petrie, T.W., Brooks, N.H., Fenstermacher, M.E., Greenfield, C.M., Groth, M., Hyatt, A.W., Leonard, A.W., Mahdavi, M.A., Porter, G.D., Rensink, M.E., Schaffer, M.J., Wade, M.R., Watkins, J.G., Wolf, N.S., The DIII–D Team

“…Recent experiments on DIII-D point to the importance of two factors in determining the rate at which deuterium particles can be pumped at the divertor…”
Get full text

High internal inductance improved confinement H-mode discharges obtained with an elongation ramp technique in the DIII-D Tokamak by LAO, L. L, FERRON, J. R, JAMES, R, LAZARUS, E. A, OSBORNE, T. H, SAINT JOHN, H, STRAIT, E. J, THOMPSON, S. J, TURNBULL, A. D, WROBLEWSKI, D, ZOHM, H, TEAM, D.-D, TAYLOR, T. S, BURRELL, K. H, CHAN, V. S, CHU, M. S, DEBOO, J. C, DOYLE, E. J, GREENFIELD, C. M, GROEBNER, R. J

Get full text

Quiescent Double Barrier Regime in the DIII-D Tokamak by Greenfield, C. M., Burrell, K. H., DeBoo, J. C., Doyle, E. J., Stallard, B. W., Synakowski, E. J., Fenzi, C., Gohil, P., Groebner, R. J., Lao, L. L., Makowski, M. A., McKee, G. R., Moyer, R. A., Rettig, C. L., Rhodes, T. L., Pinsker, R. I., Staebler, G. M., West, W. P., the DIII-D Team

Get full text

Power and isotope effects in the ITER baseline scenario with tungsten and tungsten-equivalent radiators in DIII-D by Sips, A. C. C., Turco, F., Greenfield, C. M., Schmitz, L., Luce, T., Odstrčil, T., McLean, A., Bykov, I., Hyatt, A., Osborne, T.

“…Experiments in DIII-D document the ITER Baseline Scenario (IBS) at q95 ~ 3 and PIN/PLH ~ 1–2, in both deuterium and hydrogen utilizing Kr and Xe as…”
Get full text

Development path of low aspect ratio tokamak power plants by Stambaugh, R.D., Chan, V.S., Miller, R.L., Anderson, P.M., Chiu, H.K., Chiu, S.C., Forest, C.B., Greenfield, C.M., Jensen, T.H., La Haye, R.J., Lao, L.L., Lin-Liu, Y.R., Nerem, A., Prater, R., Politzer, P.A., St. John, H., Schaffer, M.J., Staebler, G.M., Taylor, T.S., Turnbull, A.D., Wong, C.P.C.

“…Recent advances in tokamak physics indicate that a spherical tokamak may offer a magnetic fusion development path that can be started with a small size pilot…”
Get full text

Higher Fusion Power Gain with Current and Pressure Profile Control in Strongly Shaped DIII-D Tokamak Plasmas by Lazarus, EA, Navratil, GA, Greenfield, CM, Strait, EJ, Austin, ME, Burrell, KH, Casper, TA, Baker, DR, DeBoo, JC, Doyle, EJ, Durst, R, Ferron, JR, Forest, CB, Gohil, P, Groebner, RJ, Heidbrink, WW, Hong, R, Houlberg, WA, Howald, AW, Hsieh, C, Hyatt, AW, Jackson, GL, Kim, J, Lao, LL, Lasnier, CJ, Leonard, AW, Lohr, J, La Haye RJ, Maingi, R, Miller, RL, Murakami, M, Osborne, TH, Perkins, LJ, Petty, CC, Rettig, CL, Rhodes, TL, Rice, BW, Sabbagh, SA, Schissel, DP, Scoville, JT, Snider, RT, Staebler, GM, Stallard, BW, Stambaugh, RD, St John HE, Stockdale, RE, Taylor, PL, Thomas, DM, Turnbull, AD, Wade, MR, Wood, R, Whyte, D

Get full text

Power and isotope effects in the ITER baseline scenario with tungsten and tungsten-equivalent radiators in DIII-D by Sips, A.C.C., Turco, F., Greenfield, C.M., Schmitz, L., Luce, T., Odstrčil, T., McLean, A., Bykov, I., Hyatt, A., Osborne, T.

“…Abstract Experiments in DIII-D document the ITER Baseline Scenario (IBS) at q 95 ∼ 3 and P IN / P LH ∼ 1–2, in both deuterium and hydrogen utilizing Kr and Xe…”
Get full text

The effect of divertor magnetic balance on H-mode performance in DIII-D by Petrie, T.W., Greenfield, C.M., Grobener, R.J., Hyatt, A.W., La Haye, R.J., Leonard, A.W., Mahdavi, M.A., Osborne, T.H., Schaffer, M.J., Thomas, D.M., West, W.P., Allen, S.L., Fenstermacher, M.E., Lasnier, C.J., Porter, G.D., Wolf, N.S., Watkins, J.G., Rhodes, T.L.

“…We report on recent experiments for which the magnetic balance of highly triangular ( δ≈0.8), unpumped H-mode plasmas was varied. Changes in divertor heat…”
Get full text

Studies of high- δ (baffled) and low- δ (open) pumped divertor operation on DIII-D by Allen, S.L., Fenstermacher, M.E., Greenfield, C.M., Hyatt, A.W., Maingi, R., Porter, G.D., Wade, M.R., Bozek, A.S., Ellis, R., Hill, D.N., Hollerbach, M.A., Lasnier, C.J., Leonard, A.W., Mahdavi, M.A., Nilson, D.G., Petrie, T.W., Schaffer, M.J., Smith, J.P., Stambaugh, R.D., Thomas, D.M., Watkins, J.G., West, W.P., Whyte, D.G., Wood, R.D.

“…We report new experimental results with the Radiative Divertor Project-outer baffle (RDP-OB) and cryopump in both upper single-null (USN) and double-null (DN)…”
Get full text

Effects of particle exhaust on neutral compression ratios in DIII-D by Colchin, R.J., Maingi, R., Allen, S.L., Greenfield, C.M., Wade, M.R.

“…In this paper, neutral particles in DIII-D are studied via their compression in the plenum and via particle exhaust. The compression of gas in the plena is…”
Get full text