Search Results - "Zamperini, S."

Design and physics basis for the upcoming DIII-D SAS-VW campaign to quantify tungsten leakage and transport in a new slot divertor geometry by Abrams, T, Sinclair, G, Nichols, J H, Unterberg, E A, Donovan, D C, Duran, J, Elder, J D, Glass, F, Grierson, B A, Guo, H Y, Hall, T, Ma, X, Maurizio, R, McLean, A G, Murphy, C, Nguyen, R, Rudakov, D L, Stangeby, P C, Thomas, D M, Zamperini, S A

“…Abstract A set of experiments are planned to exploit the high SOL collisionality enabled by a tightly baffled slot divertor geometry to suppress tungsten…”
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SiC as a core-edge integrated wall solution in DIII-D by Zamperini, S., Abrams, T., Nichols, J., Unterberg, E., Lasa, A., Stangeby, P., Bringuier, S., Rudakov, D., Elder, J.D.

“…[Display omitted] •SiC walls are compared to the current graphite walls in DIII-D.•SiC is expected to lower Zeff in the modeled L-mode due to lower sputtering…”
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Transport of tungsten to collector probes in DIII-D by Zamperini, S., Donovan, D., Unterberg, E., Stangeby, P., Nichols, J., Duran, J., Elder, D., Neff, A., Rudakov, D., Zach, M.

“…•Double-sided collector probes were inserted in the SOL of DIII-D to collect tungsten.•The asymmetric deposition profiles are explained in terms of a simple 2D…”
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Density fluctuation statistics and turbulence spreading at the edge of L–mode plasmas by Khabanov, F.O., Hong, R., Diamond, P. H., Tynan, G. R., Yan, Z., McKee, G. R., Chrystal, C., Scotti, F., Yu, G., Zamperini, S. A., Zhu, Y.

“…Abstract Long-wavelength density fluctuations ( k ρ i <1) are studied using beam emission spectroscopy (BES) at the edge of DIII-D L-mode plasmas ( ρ =…”
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Use of isotopic tungsten tracers and a stable-isotope-mixing model to characterize divertor source location in the DIII-D metal rings campaign by Unterberg, E.A., Donovan, D.C., Duran, J.D., Stangeby, P.C., Zamperini, S., Abrams, T., Rudakov, D.L., Wampler, W.R., Zach, M.P.

“…•A basic model is presented that aided the first-time use of isotopic W tracers in a fusion device.•Using the model, upstream probe deposition shows that the W…”
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Density fluctuation statistics and turbulence spreading at the edge of L–mode plasmas by Khabanov, F. O., Hong, R., Diamond, P. H., Tynan, G. R., Yan, Z., McKee, G. R., Chrystal, C., Scotti, F., Yu, G., Zamperini, S. A., Zhu, Y.

“…Abstract Long-wavelength density fluctuations ( k ρ i <1) are studied using beam emission spectroscopy (BES) at the edge of DIII-D L-mode plasmas ( ρ =…”
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Turbulent drifts of impurity ions as an explanation for anomalous radial transport in the far-SOL of DIII-D by Zamperini, S.A., Bernard, T.A., Rudakov, D.L, Boedo, J.A

“…Abstract Successful fusion reactor operation relies on minimal core contamination by impurities, otherwise too much power may be radiated and harm performance…”
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DIII-D research to provide solutions for ITER and fusion energy by Abrams, A., Anand, H., Battey, A., Beidler, M., Bortolon, A., Braun, A., Bringuier, S., Brown, W., Buczek, S., Buttery, R., Carlstrom, T., Casali, L., Chen, Y., Coda, S., Coffee, R., Dautt-Silva, A., Demers, D., Di Genova, S., Eidietis, N., Ernst, D., Fajardo, M., Flanagan, S., Freiberger, S., Fu, L., Garcia, F., Garcia, A., Hager, R., Hammett, G., Hicok, J., Holcomb, C., Hollmann, E., Holm, A., Huang, Y., Humphreys, D., Jung, E., Kennedy, J., Kostadinova, E., Kramer, G., Lin, Z., Lin, Z., Liu, D., Liu, Z., Liu, C., Luce, T., Maingi, R., Major, M., Marini, C., Moeller, C., Nelson, A., Nguyen, R., Nichols, J., Nocente, M., Okabayashi, M., Pajares Martinez, A., Parsons, M., Periasamy, L., Pharr, M., Pigatto, L., Piglowski, D., Popovic, Z., Ra, O., Raines, T., Rath, K., Reed, R., Reiman, A., Richner, N., Riggs, G., Rognlien, T., Rosati, R., Ross, M., Schellpfeffer, J., Scotti, F., Seltzman, A., Shi, N., Sierra, C., Sips, G., Slendebroek, T., Smith, D., Song, X., Spong, D., Stangeby, P., Stoltzfus-Dueck, T., Su, D., Sun, P., Sun, X., Truong, D., Turco, F., Van Compernolle, B., van Kampen, R., Viezzer, E., Wang, Z., Watkins, J., Wei, X., Wilks, T., Yang, X., Yang, J., Zamengo, A., Zeller, K., Zhang, B., Zuniga, C.

“…The DIII-D tokamak has elucidated crucial physics and developed projectable solutions for ITER and fusion power plants in the key areas of core performance,…”
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Investigating the effect of BT direction on W source-to-core pathways during the SAS-VW campaign on DIII-D by Mateja, J.D., Zamperini, S.A., Odstrcil, T., Nichols, J.H., Ray, T.E., Cacheris, A., Abrams, T., McLean, A.G., Sinclair, G., Messer, S.H., Maurizio, R., Thomas, D.M., Donovan, D.C.

“…•Larger core tungsten contamination from outer target in favorable Bt.•Strike point in slot vertex decreases contamination ratio between Bt directions.•Bt…”
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Collector probe analysis of tungsten transport to the far-SOL from the DIII-D SAS-VW divertor experiment by Messer, S.H., Mateja, J.D., Nichols, J.H., Cacheris, A., Duran, J.D., Zamperini, S.A., Sinclair, G., Donovan, D., Abrams, T., Odstrcil, T., Ren, J., Garcia, W., Unterberg, E.A., Stangeby, P.C., Rudakov, D.L., Elder, J.D., Watkins, J.

“…Experimental results from the 2022 tungsten (W)-coated Small Angle Slot (SAS-VW) divertor campaign at DIII-D coupled with interpretive 3DLIM modelling show…”
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Reproduction of collector probe deposition profiles using the far-SOL impurity transport code 3DLIM by Zamperini, S.A., Elder, J.D., Stangeby, P.C., Nichols, J.H., Donovan, D.C., Duran, J.D., Unterberg, E.A., Rudakov, D.L.

“…•DIII-D collector probe deposition patterns are successfully reproduced in 3DLIM.•3DLIM requires tungsten to enter far-SOL from inner target direction when…”
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13C surface characterization of midplane and crown collector probes on DIII-D by Duran, J.D., Donovan, D.C., Nichols, J.H., Unterberg, E.A., Zamperini, S.A., Abrams, T., Perillo, R., Ren, J., Rudakov, D.L., Shafer, M.W., Stangeby, P.C., Taussig, D.A., Wilcox, R.S., Zach, M.P.

“…•Dual collector probe system developed for increasing poloidal resolution of SOL impurities.•Basic stable isotopic mixing model developed for carbon-12 and…”
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The administrative procedures of a physical education program in a school district of twenty to twenty-five thousand population by Zamperini, Pete S

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