Search Results - "Suttrop, W."

First observation of edge localized modes mitigation with resonant and nonresonant magnetic perturbations in ASDEX Upgrade by Suttrop, W, Eich, T, Fuchs, J C, Günter, S, Janzer, A, Herrmann, A, Kallenbach, A, Lang, P T, Lunt, T, Maraschek, M, McDermott, R M, Mlynek, A, Pütterich, T, Rott, M, Vierle, T, Wolfrum, E, Yu, Q, Zammuto, I, Zohm, H

“…First experiments with nonaxisymmetric magnetic perturbations, toroidal mode number n=2, produced by newly installed in-vessel saddle coils in the ASDEX…”
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Turbulence characterization during the suppression of edge-localized modes by magnetic perturbations on ASDEX Upgrade by Leuthold, N., Suttrop, W., Willensdorfer, M., Birkenmeier, G., Brida, D., Cavedon, M., Dunne, M., Conway, G.D., Fischer, R., Gil, L., Happel, T., Hennequin, P., Kappatou, A., Kirk, A., Manz, P., McDermott, R.M., Vicente, J., Zohm, H., Upgrade Team, the ASDEX, MST1 Team, the EUROfusion

“…Abstract We study localized edge turbulence in the ASDEX Upgrade tokamak that appears if resonant magnetic perturbations (RMP) are applied to suppress edge…”
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Active control of Alfvén eigenmodes by external magnetic perturbations with different spatial spectra by Gonzalez-Martin, J., Garcia-Munoz, M., Galdon-Quiroga, J., Todo, Y., Dominguez-Palacios, J., Dunne, M., Jansen Van Vuuren, A., Liu, Y.Q., Sanchis-Sanchez, L., Spong, D., Suttrop, W., Wang, X., Willensdorfer, M.

“…Abstract Alfvén eigenmodes have been suppressed and excited in tokamak plasmas by (just) modifying the poloidal spectra of externally applied static magnetic…”
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Progress towards edge-localized mode suppression via magnetic perturbations in hydrogen plasmas by Leuthold, N., Suttrop, W., Paz-Soldan, C., Dunne, M.G., Fischer, R., Hinson, E., Knolker, M., Laggner, F., Logan, N.C., Osborne, T., Orlov, D., Schmitz, L., Shafer, M., Willensdorfer, M.

“…Abstract The suppression of edge-localized modes (ELMs) by applying resonant magnetic perturbations (RMPs) is well studied in low collisionality deuterium…”
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Progress in extrapolating divertor heat fluxes towards large fusion devices by Sieglin, B, Faitsch, M, Eich, T, Herrmann, A, Suttrop, W

“…Heat load to the plasma facing components is one of the major challenges for the development and design of large fusion devices such as ITER. Nowadays fusion…”
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Field-Line Localized Destabilization of Ballooning Modes in Three-Dimensional Tokamaks by Willensdorfer, M, Cote, T B, Hegna, C C, Suttrop, W, Zohm, H, Dunne, M, Strumberger, E, Birkenmeier, G, Denk, S S, Mink, F, Vanovac, B, Luhmann, L C

“…Field-line localized ballooning modes have been observed at the edge of high confinement mode plasmas in ASDEX Upgrade with rotating 3D perturbations induced…”
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Plasma performance and operational space with an RMP-ELM suppressed edge by Paz-Soldan, C., Gu, S., Leuthold, N., Lunia, P., Xie, P., Kim, M.W., Kim, S.K., Logan, N.C., Park, J.-K., Suttrop, W., Sun, Y., Weisberg, D.B., Willensdorfer, M.

“…Abstract The operational space and global performance of plasmas with edge-localized modes (ELMs) suppressed by resonant magnetic perturbations (RMPs) are…”
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Active Control of Alfvén Eigenmodes by Externally Applied 3D Magnetic Perturbations by Gonzalez-Martin, J, Garcia-Munoz, M, Galdon-Quiroga, J, Todo, Y, Dominguez-Palacios, J, Dunne, M, van Vuuren, A Jansen, Liu, Y Q, Sanchis, L, Spong, D, Suttrop, W, Wang, X, Willensdorfer, M

“…The suppression and excitation of Alfvén eigenmodes have been experimentally obtained, for the first time, by means of externally applied 3D perturbative…”
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Beam-Ion Acceleration during Edge Localized Modes in the ASDEX Upgrade Tokamak by Galdon-Quiroga, J, Garcia-Munoz, M, McClements, K G, Nocente, M, Hoelzl, M, Jacobsen, A S, Orain, F, Rivero-Rodriguez, J F, Salewski, M, Sanchis-Sanchez, L, Suttrop, W, Viezzer, E

“…The acceleration of beam ions during edge localized modes (ELMs) in a tokamak is observed for the first time through direct measurements of fast-ion losses in…”
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Helium plasma operations on ASDEX Upgrade and JET in support of the non-nuclear phases of ITER by Hakola, A., Balden, M., Baruzzo, M., Bisson, R., Brezinsek, S., Dittmar, T., Douai, D., Dunne, M., Garzotti, L., Groth, M., Henriques, R., Horvath, L., Jepu, I., Joffrin, E., Kappatou, A., Keeling, D., Krieger, K., Labit, B., Lennholm, M., Likonen, J., Loarte, A., Lomas, P., Lowry, C., Maslov, M., Matveev, D., Pitts, R.A., Plank, U., Rasinski, M., Ryan, D., Saarelma, S., Silburn, S., Solano, E.R., Suttrop, W., Tala, T., Tsitrone, E., Vianello, N., Wauters, T., Widdowson, A., Wischmeier, M., Exploitation Team, the EUROfusion Tokamak, Team, the ASDEX Upgrade

“…Abstract For its initial operational phase, ITER has until recently considered using non-nuclear hydrogen (H) or helium (He) plasmas to keep nuclear activation…”
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Error field detection and correction studies towards ITER operation by Piron, L., Paz-Soldan, C., Pigatto, L., Zanca, P., Sauter, O., Putterich, T., Bettini, P., Bonotto, M., Cunningham, G., De Tommasi, G., Ferron, N., Gambrioli, M., Graham, G., De Vries, P., Gribov, Y., Hu, Q., Kirov, K., Logan, N.C., Lennholm, M., Mattei, M., Maraschek, M., Markovic, T., Manduchi, G., Martin, P., Pironti, A., Polevoi, A.R., Ravensbergen, T., Ryan, D., Sieglin, B., Suttrop, W., Terranova, D., Teschke, W., Valcarcel, D.F., Vincent, C.

“…Abstract In magnetic fusion devices, error field (EF) sources, spurious magnetic field perturbations, need to be identified and corrected for safe and stable…”
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Experimental study of trapped-electron-mode properties in tokamaks : Threshold and stabilization by collisions by RYTER, F, ANGIONI, C, PEETERS, A. G, LEUTERER, F, FAHRBACH, H.-U, SUTTROP, W

“…Trapped electron modes are one of the candidates to explain turbulence driven electron heat transport observed in tokamaks. This instability has two…”
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Preliminary analysis of alternative divertors for DEMO by Militello, F., Aho-Mantila, L., Ambrosino, R., Body, T., Bufferand, H., Calabro, G., Ciraolo, G., Coster, D., Di Gironimo, G., Fanelli, P., Fedorczak, N., Herrmann, A., Innocente, P., Kembleton, R., Lilburne, J., Lunt, T., Marzullo, D., Merriman, S., Moulton, D., Nielsen, A.H., Omotani, J., Ramogida, G., Reimerdes, H., Reinhart, M., Ricci, P., Riva, F., Stegmeir, A., Subba, F., Suttrop, W., Tamain, P., Teschke, M., Thrysoe, A., Treutterer, W., Varoutis, S., Wensing, M., Wilde, A., Wischmeier, M., Xiang, L.Y.

“…A physics and engineering analysis of alternative divertor configurations is carried out by examining benefits and problems by comparing the baseline single…”
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2D heat flux in ASDEX Upgrade L-Mode with magnetic perturbation by Faitsch, M., Sieglin, B., Eich, T., Herrmann, A., Suttrop, W.

“…•The 2D heat flux pattern in presence of MP is studied in ASDEX Upgrade.•Transport qualifiers in the SOL do not change in presence of MP.•The heat flux…”
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Final steps to an all tungsten divertor tokamak by Neu, R., Bobkov, V., Dux, R., Kallenbach, A., Pütterich, Th, Greuner, H., Gruber, O., Herrmann, A., Hopf, Ch, Krieger, K., Maggi, C.F., Maier, H., Mayer, M., Rohde, V., Schmid, K., Suttrop, W.

“…Currently 85% of the plasma facing components of ASDEX Upgrade are tungsten coated. Carbon influx from W PFCs is still observed but a reduction of the C…”
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Deformation measurement of internal components of ASDEX Upgrade using optical strain sensors by Vorpahl, C., Suttrop, W., Ebner, M., Streibl, B., Zohm, H.

“…► A fibre-optic measurement for the deformation of in-vessel components has successfully been installed and commissioned at ASDEX Upgrade. ► This technology…”
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Mode analysis limitations of ECE-I & ECE measurements at the plasma edge by Vanovac, B., Denk, S.S., Wolfrum, E., Willensdorfer, M., Suttrop, W., Fischer, R., Luhmann, N.C.

“…Interpretation of the Electron Cyclotron Emission (ECE) and ECE Imaging (ECE-I) measurements concerning the measurement position and the radiation temperature…”
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Power inverter design for ASDEX Upgrade saddle coils by Teschke, M., Suttrop, W., Rott, M.

“…► A cost effective inverter topology for AUG's 16 in-vessel saddle coils has been found. ► Use of commercially available power modules is possible. ► Exchange…”
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Modification of scrape-off layer transport and turbulence by non-axisymmetric magnetic perturbations in ASDEX Upgrade by Müller, H.W., Lunt, T., Suttrop, W., Eich, T., Fischer, R., Fuchs, J.C., Herrmann, A., Kočan, M., de Marné, P., Wolfrum, E.

“…A brief survey of the status of ELM mitigation by non-axisymmetric magnetic perturbations in ASDEX Upgrade is presented. ELM mitigation occurs for a wide range…”
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In-vessel saddle coils for MHD control in ASDEX Upgrade by Suttrop, W., Gruber, O., Günter, S., Hahn, D., Herrmann, A., Rott, M., Vierle, T., Seidel, U., Sempf, M., Streibl, B., Strumberger, E., Yadikin, D., Neubauer, O., Unterberg, B., Gaio, E., Toigo, V., Brunsell, P.

“…A set of 24 in-vessel saddle coils is planned for MHD control experiments in ASDEX Upgrade. These coils can produce static and alternating error fields for…”
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