Search Results - "SOUKHANOVSKII, V"

Electron-density-sensitive Line Ratios of Fe xiii- xvi from Laboratory Sources Compared to CHIANTI by Weller, M. E., Beiersdorfer, P., Soukhanovskii, V. A., Scotti, F., LeBlanc, B. P.

“…We present electron-density-sensitive line ratios for Fe xiii- xvi measured in the spectral wavelength range of 200-440 and an electron density range of (1-4)…”
Get full text

Real-time plasma equilibrium reconstruction and shape control for the MAST Upgrade tokamak by Anand, H., Wehner, W., Eldon, D., Welander, A., Xing, Z., Lvovskiy, A., Barr, J., Cho, E., Sammuli, B., Humphreys, D., Eidietis, N., Leonard, A., Kochan, M., Vincent, C., McArdle, G., Cunningham, G., Thornton, A., Harrison, J., Soukhanovskii, V., Lovell, J.

“…Abstract Real-time magnetic control has been developed to deliver precise control of multiple plasma shape parameters for advanced divertor configurations,…”
Get full text

Extending the low-recycling, flat temperature profile regime in the lithium tokamak experiment-β (LTX-β) with ohmic and neutral beam heating by Boyle, D.P., Anderson, J., Banerjee, S., Bell, R.E., Capecchi, W., Elliott, D.B., Hansen, C., Kubota, S., LeBlanc, B.P., Maan, A., Maingi, R., Majeski, R., Menard, J.E., Oliva, S., Rhodes, T., Soukhanovskii, V., Zakharov, L.

“…Abstract Recent experiments in the lithium tokamak experiment- β (LTX- β ) have extended the duration, performance, operating conditions, and diagnosis of the…”
Get full text

Observation of He-like Satellite Lines of the H-like Potassium K xix Emission by Weller, M. E., Beiersdorfer, P., Lockard, T. E., Brown, G. V., McKelvey, A., Nilsen, J., Shepherd, R., Soukhanovskii, V. A., Hill, M. P., Hobbs, L. M. R., Burridge, D., Hoarty, D. J., Morton, J., Wilson, L., Rose, S. J., Hatfield, P.

“…We present measurements of the H-like potassium (K xix) X-ray spectrum and its He-like (K xviii) satellite lines, which are situated in the wavelength region…”
Get full text

Dependence of divertor heat flux widths on heating power, flux expansion, and plasma current in the NSTX by Gray, T.K., Maingi, R., Soukhanovskii, V.A., Surany, J.E., Ahn, J.-W., McLean, A.G.

“…We report the dependence of the lower divertor surface heat flux profiles, measured from infrared thermography and mapped magnetically to the mid-plane on loss…”
Get full text

Spectroscopic measurement of increases in hydrogen molecular rotational temperature with plasma-facing surface temperature and due to collisional-radiative processes in tokamaks by Yoneda, N., Shikama, T., Scotti, F., Hanada, K., Iguchi, H., Idei, H., Onchi, T., Ejiri, A., Ido, T., Kono, K., Peng, Y., Osawa, Y., Yatomi, G., Kidani, A., Kudo, M., Hiraka, R., Takeda, K., Bell, R.E., Maan, A., Boyle, D.P., Majeski, R., Soukhanovskii, V.A., Groth, M., McLean, A.G., Wilcox, R.S., Lasnier, C., Nakamura, K., Nagashima, Y., Ikezoe, R., Hasegawa, M., Kuroda, K., Higashijima, A., Nagata, T., Shimabukuro, S., Niiya, I., Sekiya, I., Hasuo, M.

“…Abstract Spatially resolved rotational temperature of ground state hydrogen molecules desorbed from plasma-facing surface was measured in QUEST, LTX-β, and…”
Get full text

Enhanced energy confinement and performance in a low-recycling tokamak by Majeski, R, Doerner, R, Gray, T, Kaita, R, Maingi, R, Mansfield, D, Spaleta, J, Soukhanovskii, V, Timberlake, J, Zakharov, L

“…Extensive lithium wall coatings and liquid lithium plasma-limiting surfaces reduce recycling, with dramatic improvements in Ohmic plasma discharges in the…”
Get full text

Continuous improvement of H-mode discharge performance with progressively increasing lithium coatings in the National Spherical Torus Experiment by Maingi, R, Kaye, S M, Skinner, C H, Boyle, D P, Canik, J M, Bell, M G, Bell, R E, Gray, T K, Jaworski, M A, Kaita, R, Kugel, H W, LeBlanc, B P, Mansfield, D K, Osborne, T H, Sabbagh, S A, Soukhanovskii, V A

“…Lithium wall coatings have been shown to reduce recycling, improve energy confinement, and suppress edge localized modes in the National Spherical Torus…”
Get full text

Improved neutral and plasma density control with increasing lithium wall coatings in the Lithium Tokamak Experiment-β (LTX-β) by Maan, A., Boyle, D.P., Majeski, R., Banerjee, S., Francisquez, M., Kaita, R., Wilkie, G.J., Capecchi, W., Kubota, S., Hansen, C., Soukhanovskii, V.

“…A comparison of three sets of Lithium Tokamak Experiment-β (LTX-β) discharges is presented, each with progressively more lithium evaporatively deposited on the…”
Get full text

Measurements and 2-D modeling of recycling and edge transport in discharges with lithium-coated PFCs in NSTX by Canik, J.M., Maingi, R., Soukhanovskii, V.A., Bell, R.E., Kugel, H.W., LeBlanc, B.P., Osborne, T.H.

“…The application of lithium coatings on plasma facing components has been shown to profoundly affect plasma performance in the National Spherical Torus…”
Get full text

Transition to ELM-free improved H-mode by lithium deposition on NSTX graphite divertor surfaces by Mansfield, D.K., Kugel, H.W., Maingi, R., Bell, M.G., Bell, R., Kaita, R., Kallman, J., Kaye, S., LeBlanc, B., Mueller, D., Paul, S., Raman, R., Roquemore, L., Sabbagh, S., Schneider, H., Skinner, C.H., Soukhanovskii, V., Timberlake, J., Wilgen, J., Zakharov, L.

“…Lithium evaporated onto plasma facing components in the NSTX lower divertor has made dramatic improvements in discharge performance. As lithium accumulated,…”
Get full text

Tokamak Power Exhaust with the Snowflake Divertor: Present Results and Outstanding Issues by Soukhanovskii, V. A., Xu, X.

“…A snowflake divertor magnetic configuration (Ryutov in Phys Plasmas 14(6):064502, 2007 ) with the second-order poloidal field null offers a number of possible…”
Get full text

Heat flux management via advanced magnetic divertor configurations and divertor detachment by Kolemen, E., Allen, S.L., Bray, B.D., Fenstermacher, M.E., Humphreys, D.A., Hyatt, A.W., Lasnier, C.J., Leonard, A.W., Makowski, M.A., McLean, A.G., Maingi, R., Nazikian, R., Petrie, T.W., Soukhanovskii, V.A., Unterberg, E.A.

“…The snowflake divertor (SFD) control and detachment control to manage the heat flux at the divertor are successfully demonstrated at DIII-D. Results of the…”
Get full text

Demonstration of Tokamak ohmic flux saving by transient coaxial helicity injection in the national spherical torus experiment by Raman, R, Mueller, D, Nelson, B A, Jarboe, T R, Gerhardt, S, Kugel, H W, Leblanc, B, Maingi, R, Menard, J, Ono, M, Paul, S, Roquemore, L, Sabbagh, S, Soukhanovskii, V

“…Transient coaxial helicity injection (CHI) started discharges in the National Spherical Torus Experiment (NSTX) have attained peak currents up to 300 kA and…”
Get full text

Evaporated lithium surface coatings in NSTX by Kugel, H.W., Mansfield, D., Maingi, R., Bell, M.G., Bell, R.E., Allain, J.P., Gates, D., Gerhardt, S., Kaita, R., Kallman, J., Kaye, S., LeBlanc, B., Majeski, R., Menard, J., Mueller, D., Ono, M., Paul, S., Raman, R., Roquemore, A.L., Ross, P.W., Sabbagh, S., Schneider, H., Skinner, C.H., Soukhanovskii, V., Stevenson, T., Timberlake, J., Wampler, W.R., Wilgren, J., Zakharov, L.

“…Two lithium evaporators were used to evaporate more than 100 g of lithium on to the NSTX lower divertor region. Prior to each discharge, the evaporators were…”
Get full text

Radiative snowflake divertor studies in DIII-D by Soukhanovskii, V.A., Allen, S.L., Fenstermacher, M.E., Hill, D.N., Lasnier, C.J., Makowski, M.A., McLean, A.G., Meyer, W.H., Kolemen, E., Groebner, R.J., Hyatt, A.W., Leonard, A.W., Osborne, T.H., Petrie, T.W.

“…Recent DIII-D experiments assessed the snowflake divertor (SF) configuration in a radiative regime in H-mode discharges with D2 seeding. The SF configuration…”
Get full text

Hydrogen retention in lithium on metallic walls from “in vacuo” analysis in LTX and implications for high-Z plasma-facing components in NSTX-U by Kaita, R., Lucia, M., Allain, J.P., Bedoya, F., Bell, R., Boyle, D., Capece, A., Jaworski, M., Koel, B.E., Majeski, R., Roszell, J., Schmitt, J., Scotti, F., Skinner, C.H., Soukhanovskii, V.

“…The application of lithium to plasma-facing components (PFCs) has long been used as a technique for wall conditioning in magnetic confinement devices to…”
Get full text

Snowflake Divertor Experiments in the DIII-D, NSTX, and NSTX-U Tokamaks Aimed at the Development of the Divertor Power Exhaust Solution by Soukhanovskii, V. A., Allen, S. L., Fenstermacher, M. E., Lasnier, C. J., Makowski, M. A., McLean, A. G., Meier, E. T., Meyer, W. H., Rognlien, T. D., Ryutov, D. D., Scotti, F., Kolemen, E., Bell, R. E., Diallo, A., Gerhardt, S., Kaita, R., Kaye, S., LeBlanc, B. P., Maingi, R., Menard, J. E., Podesta, M., Roquemore, A. L., Groebner, R. J., Hyatt, A. W., Leonard, A. W., Osborne, T. H., Petrie, T. W., Ahn, J.-W, Raman, R., Watkins, J. G.

“…Experimental results from the National Spherical Torus Experiment (NSTX), a medium-size spherical tokamak with a compact divertor, and DIII-D, a large…”
Get full text

Dependence of recycling and edge profiles on lithium evaporation in high triangularity, high performance NSTX H-mode discharges by Maingi, R., Osborne, T.H., Bell, M.G., Bell, R.E., Boyle, D.P., Canik, J.M., Diallo, A., Kaita, R., Kaye, S.M., Kugel, H.W., LeBlanc, B.P., Sabbagh, S.A., Skinner, C.H., Soukhanovskii, V.A.

“…In this paper, the effects of a pre-discharge lithium evaporation variation on highly shaped discharges in the National Spherical Torus Experiment (NSTX) are…”
Get full text

Modeling detachment physics in the NSTX snowflake divertor by Meier, E.T., Soukhanovskii, V.A., Bell, R.E., Diallo, A., Kaita, R., LeBlanc, B.P., McLean, A.G., Podestà, M., Rognlien, T.D., Scotti, F.

“…The snowflake divertor is a proposed technique for coping with the tokamak power exhaust problem in next-step experiments and eventually reactors, where…”
Get full text