Search Results - "Pinsker, R.I"

First high-power helicon results from DIII-D by Pinsker, R.I., Van Compernolle, B., Tang, S.X., Lestz, J.B., Moeller, C.P., Petty, C.C., Dupuy, A., Squire, J.P., Garofalo, A.M., Porkolab, M., Rost, J.C., Baek, S.G., Nagy, A., Chowdhury, S., Crocker, N.A., Degrandchamp, G.H., McLean, A.G., Gage, K.R., Marinoni, A., Martin, E.H., Ronchi, G.

“…Abstract More than 0.6 MW of rf power at 476 MHz has been coupled to DIII-D plasmas by launching helicon (whistler) waves with a traveling-wave antenna…”
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Parametric Instabilities During High Power Helicon Wave Injection on DIII-D by Porkolab, M., Pinsker, R.I.

“…High power helicon (whistler) waves at a frequency of 0.47 GHz are being considered for efficient off-axis current generation in high performance DIII-D…”
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Tests of advanced RF off-axis current drive techniques on DIII-D by Pinsker, R.I., Chen, X., Lohr, J.M., Moeller, C.P., Porkolab, M., Brookman, M.W., Petty, C.C., Wukitch, S.J., Wallace, G.M., Buttery, R.J.

“…The establishment of reactor-relevant radiofrequency heating and current drive techniques is a focus of work on DIII-D in the next five-year period. This paper…”
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High Field Side Lower Hybrid Current Drive Simulations for Off- axis Current Drive in DIII-D by Wukitch, S.J., Shiraiwa, S., Wallace, G.M., Bonoli, P.T., Holcomb, C., Pinsker, R.I.

“…Efficient off-axis current drive scalable to reactors is a key enabling technology for developing economical, steady state tokamak. Previous studies have…”
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Application of ECH to the Study of Transport in ITER Baseline Scenario-like Discharges in DIII-D by Pinsker, R.I., Austin, M.E., Ernst, D.R., Garofalo, A.M., Grierson, B.A., Hosea, J.C., Luce, T.C., Marinoni, A., McKee, G.R., Perkins, R.J., Petty, C.C., Porkolab, M., Rost, J.C., Schmitz, L., Solomon, W.M., Taylor, G., Turco, F.

“…Recent DIII-D experiments in the ITER Baseline Scenario (IBS) have shown strong increases in fluctuations and correlated reduction of confinement associated…”
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Toroidally resolved structure of divertor heat flux in RMP H-mode discharges on DIII-D by Jakubowski, M.W., Evans, T.E., Fenstermacher, M.E., Lasnier, C.J., Wolf, R.C., Baylor, L.R., Boedo, J.A., Burrell, K.H., deGrassie, J.S., Gohil, P., Mordijck, S., Laengner, R., Leonard, A.W., Moyer, R.A., Petrie, T.W., Petty, C.C., Pinsker, R.I., Rhodes, T.L., Schaffer, M.J., Schmitz, O., Snyder, P.B., Stoschus, H., Osborne, T.H., Orlov, D.M., Unterberg, E.A., Watkins, J.G.

“…As shown on DIII-D edge localized modes (ELMs) can be either completely eliminated or mitigated with resonant magnetic perturbation (RMP) fields. Two infrared…”
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Gyroradius scaling of electron and ion transport by Petty, CC, Luce, TC, Pinsker, RI, Burrell, KH, Chiu, SC, Gohil, P, James, RA, Wròblewski, D

“…The scaling of heat diffusion with relative gyroradius [rho][sub *] is measured on the DIII-D tokamak using dimensionally similar discharges. For the first…”
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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%)…”
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Energy Transport in Tokamak Plasmas with Central Current Density Control Using Fast Waves by Forest, CB, Petty, CC, Austin, ME, Baity, FW, Burrell, KH, Chiu, SC, Chu, MS, deGrassie, JS, Gohil, P, Hyatt, AW, Ikezi, H, Lazarus, EA, Murakami, M, Pinsker, RI, Porkolab, M, Prater, R, Rice, BW, Staebler, GM, Strait, EJ, Taylor, TS, Whyte, DG

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Vulnerability of Feedthroughs Operated at a Low-Impedance Point on DIII-D by Baity, F.W., Pinsker, R.I., Fredd, E.H., Greenough, N.L., Horton, A.R., Martin, W.C.

“…Two vacuum feedthrough ceramics failed in separate incidents on DIII-D when operating at high power with the feedthrough near a low-voltage point in the…”
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Initial operation of the NSTX phased array for launching high harmonic fast waves by Ryan, P.M, Wilson, J.R, Swain, D.W, Pinsker, R.I, Carter, M.D, Gates, D, Hosea, J.C, Mau, T.K, Menard, J.E, Mueller, D, Sabbagh, S.A, Wilgen, J.B

“…A high harmonic fast wave (HHFW) antenna array, designed to provide up to 6 MW of power at 30 MHz for heating and current drive applications, has been operated…”
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Results of NSTX heating experiments by Mueller, D., Ono, M., Bell, M.G., Bell, R.E., Bitter, M., Bourdelle, C., Darrow, D.S., Efthimion, P.C., Fredrickson, E.D., Gates, D.A., Goldston, R.J., Grisham, L.R., Hawryluk, R.J., Hill, K.W., Hosea, J.C., Jardin, S.C., Ji, H., Kaye, S.M., Kaita, R., Kugel, H.W., Johnson, D.W., LeBlanc, B.P., Majeski, R., Mazzucato, E., Medley, S.S., Menard, J.E., Park, H.K., Paul, S.F., Phillips, C.K., Redi, M.H., Rosenberg, A.L., Skinner, C.H., Soukhanovskii, V.A., Stratton, B., Synakowski, E.J., Taylor, G., Wilson, J.R., Zweben, S.J., Dorland, W.D., Peng, Y.K.M., Barry, R., Bigelow, T., Bush, C.E., Carter, M., Maingi, R., Menon, M., Ryan, P.M., Swain, D.W., Wilgen, J., Sabbagh, S.A., Paoletti, F., Bialek, J., Zhu, W., Raman, R., Jarboe, T.R., Nelson, B.A., Maqueda, R.J., Wurden, G.A., Pinsker, R.I., Schaffer, M., Ferron, J., Lao, L., Stutman, D., Finkenthal, M., Wampler, W., Kubota, S., Peebles, W.A., Gilmore, M., Mau, T.K., Lee, K.C., Domier, C.W., Deng, B.H., Johnson, M., Luhmann, N.C., Bonoli, P., Bers, A., Ram, A., Akers, R., Takase, Y., Ejiri, A., Ono, Y., Shiraiwa, S., Nishino, N., Mitarai, O., Nagata, M., Yang, J.G., Na, H., Pacella, D.

“…The National Spherical Torus Experiment (NSTX) at Princeton University, Princeton, NJ, is designed to assess the potential of the low-aspect-ratio spherical…”
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Internal Electric Field Structure of Launched Fast Magnetosonic Waves in the DIII-D Tokamak by Lee, J. H., Peebles, W. A., Jaeger, E. F., Doyle, E. J., Luhmann, N. C., Petty, C. C., Pinsker, R. I., Prater, R., Rhodes, T. L.

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The 6 MW, 110 GHz ECH system for the DIII-D tokamak by Callis, R.W., Cary, W.P., Ellis, R., Gorelov, Y.A., Grunloh, H.J., Lohr, J., Peavy, J.J., Pinsker, R.I., Ponce, D., Prater, R.

“…Summary form only given. Six 110 GHz gyrotrons have been installed and are operational on the DIII-D tokamak. Three gyrotrons are built by Gycom and have a…”
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Absorption of fast waves by electrons on the DIII-D tokamak by PETTY, C. C, PINSKER, R. I, LUCE, T. C, PRATER, R, MAYBERRY, M. J, PORKOLAB, M, BAITY, F. W, BONOLI, P. T, CHIU, S. C, DE HAAS, J. C. M, GOULDING, R. H, HOFFMAN, D. J

“…Efficient direct heating of electrons by fast waves has been observed on the DIII-D tokamak. The measured fast-wave heating efficiency was independent of…”
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RF arc detection using harmonic signals by Rogers, J.H., LaRue, P., Phelps, D.A., Pinsker, R.I.

“…A new technique for arc detection in high power RF systems is being tested on the TFTR and DIII-D ICRF systems. Because the arc is nonlinear, it generates…”
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ICH RF system data acquisition and real time control using a microcomputer system by Cary, W.P., Allen, J.A., Pinsker, R.I., Petty, C.C.

“…On the basis of the rapidly increasing power, speed, and decreasing cost of the personal computer (microcomputer) it was felt that a real time data acquisition…”
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Experimental test of a two-port decoupler in the DIII-D fast wave current drive system by Pinsker, R.I., Petty, C.C., Cary, W.P., Baity, F.W., Goulding, R.H.

“…The DIII-D fast wave current drive (FWCD) system employs a pair of resonant loops of transmission line to reduce the four element phased antenna array to a…”
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System for tunerless operation of a four-element phased array antenna for fast wave current drive by Pinsker, R.I., Baity, F.W., Cary, W.P., Petty, C.C., Callis, R.W., DeGrassie, J.S., Martin, W.C.

“…A simple transmission line configuration for powering a four-element phased antenna array is described. This system, called the balanced feed configuration…”
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System control and data acquisition of the two new FWCD RF systems at DIII-D by Harris, T.E., Allen, J.C., Cary, W.P., Ferguson, S.W., Petty, C.C., Pinsker, R.I.

“…The Fast Wave Current Drive (FWCD) system at DIII-D has increased its available radio frequency (RF) power capabilities with the addition of two new high power…”
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