Search Results - "KALLENBACH, A"

Recent analysis of key plasma wall interactions issues for ITER by Roth, Joachim, Tsitrone, E., Loarte, A., Loarer, Th, Counsell, G., Neu, R., Philipps, V., Brezinsek, S., Lehnen, M., Coad, P., Grisolia, Ch, Schmid, K., Krieger, K., Kallenbach, A., Lipschultz, B., Doerner, R., Causey, R., Alimov, V., Shu, W., Ogorodnikova, O., Kirschner, A., Federici, G., Kukushkin, A.

“…Plasma wall interaction (PWI) is important for the material choice in ITER and for the plasma scenarios compatible with material constraints. In this paper,…”
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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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Divertor detachment and reattachment with mixed impurity seeding on ASDEX Upgrade by Henderson, S.S., Bernert, M., Brida, D., Cavedon, M., David, P., Dux, R., Février, O., Järvinen, A., Kallenbach, A., Komm, M., McDermott, R., O’Mullane, M.

“…Abstract Using newly developed spectroscopic models to measure the divertor concentration of Ne and Ar, it is shown that the experimental detachment threshold…”
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Divertor enrichment of recycling impurity species (He, N2, Ne, Ar, Kr) in ASDEX Upgrade H-modes by Kallenbach, A., Dux, R., Henderson, S.S., Tantos, C., Bernert, M., Day, C., McDermott, R.M., Rohde, V., Zito, A.

“…Abstract Particle balance calculations are done for the seeding species N 2 , Ne, Ar, Kr as well as He with the aim of obtaining a realistic description of the…”
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Diagnostics for plasma control – From ITER to DEMO by Biel, W., Albanese, R., Ambrosino, R., Ariola, M., Berkel, M.V., Bolshakova, I., Brunner, K.J., Cavazzana, R., Cecconello, M., Conroy, S., Dinklage, A., Duran, I., Dux, R., Eade, T., Entler, S., Ericsson, G., Fable, E., Farina, D., Figini, L., Finotti, C., Franke, Th, Giacomelli, L., Giannone, L., Gonzalez, W., Hjalmarsson, A., Hron, M., Janky, F., Kallenbach, A., Kogoj, J., König, R., Kudlacek, O., Luis, R., Malaquias, A., Marchuk, O., Marchiori, G., Mattei, M., Maviglia, F., De Masi, G., Mazon, D., Meister, H., Meyer, K., Micheletti, D., Nowak, S., Piron, Ch, Pironti, A., Rispoli, N., Rohde, V., Sergienko, G., El Shawish, S., Siccinio, M., Silva, A., da Silva, F., Sozzi, C., Tardocchi, M., Tokar, M., Treutterer, W., Zohm, H.

“…The plasma diagnostic and control (D&C) system for a future tokamak demonstration fusion reactor (DEMO) will have to provide reliable operation near technical…”
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Investigation of helium exhaust dynamics at the ASDEX Upgrade tokamak with full-tungsten wall by Zito, A., Wischmeier, M., Kappatou, A., Kallenbach, A., Sciortino, F., Rohde, V., Schmid, K., Hinson, E.T., Schmitz, O., Cavedon, M., McDermott, R.M., Dux, R., Griener, M., Stroth, U.

“…Abstract An efficient removal of He ash by active pumping in future fusion devices is necessary to avoid fuel dilution and not degrade the core confinement…”
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Comparison of reduced model predictions for divertor detachment onset and reattachment timescales in ASDEX Upgrade and JET experiments by Henderson, S.S., Bernert, M., Brida, D., Cavedon, M., David, P., Dux, R., Février, O., Jacquet, P., Järvinen, A., Kallenbach, A., Karhunen, J., Kirov, K., Komm, M., Lennholm, M., Lomanowski, B., Lowry, C., McDermott, R., Meigs, A., Reimerdes, H., Sun, H., Thomas, B.

“…Abstract Building on prior analysis of ASDEX Upgrade (AUG) experiments (Henderson et al 2023 Nucl. Fusion 63 086024), this study compares simple analytical…”
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Characterisation of electron cyclotron wall conditioning plasma in ASDEX Upgrade by Wauters, T., Buermans, J., Cavalier, J., Huett, E., Ragona, R., Svoboda, J., Bobkov, V., Griener, M., Jacobsen, A.S., Kallenbach, A., Likonen, J., Loarer, T., Lunt, T., Nielsen, S.K., Pitts, R.A., Ricci, D., Rohde, V., Stober, J., Schneider, P., Usoltseva, M., Team, the ASDEX Upgrade

“…Abstract Electron cyclotron wall condition (ECWC) discharges are characterised in ASDEX Upgrade with full tungsten plasma facing components and X2 polarised…”
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Empiricial scaling of inter-ELM power widths in ASDEX Upgrade and JET by Eich, T., Sieglin, B., Scarabosio, A., Herrmann, A., Kallenbach, A., Matthews, G.F., Jachmich, S., Brezinsek, S., Rack, M., Goldston, R.J.

“…The SOL power decay length (λq) deduced from analysis of fully attached divertor heat load profiles from two tokamaks, JET and ASDEX Upgrade with carbon plasma…”
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Plasma-wall interaction and plasma behaviour in the non-boronised all tungsten ASDEX Upgrade by Dux, R., Bobkov, V., Herrmann, A., Janzer, A., Kallenbach, A., Neu, R., Mayer, M., Müller, H.W., Pugno, R., Pütterich, T., Rohde, V., Sips, A.C.C.

“…ASDEX Upgrade has successfully started the second experimental campaign with a full tungsten coverage of the plasma facing components and without using a…”
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Shunt and Rogowski coil measurements on ASDEX Upgrade in support of DEMO detachment control by Giannone, L., El Shawish, S., Herrmann, A., Kallenbach, A., Schuhbeck, K.H., Vayakis, G., Watts, C., Zammuto, I.

“…•Aim to develop designs for performing thermo-current measurements in DEMO.•Experiments with shunts and Rogowski coils were performed in AS-DEX…”
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Long term project in ASDEX upgrade: Implementation of ferritic steel as in vessel wall by Zammuto, I., Giannone, L., Houben, A., Herrmann, A., Kallenbach, A.

“…A long term project is started at the ASDEX Upgrade (AUG) tokamak aimed at the exploration of the compatibility of reduced activation ferritic/martensitic…”
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Plasma surface interactions in impurity seeded plasmas by Kallenbach, A., Balden, M., Dux, R., Eich, T., Giroud, C., Huber, A., Maddison, G.P., Mayer, M., McCormick, K., Neu, R., Petrie, T.W., Pütterich, T., Rapp, J., Reinke, M.L., Schmid, K., Schweinzer, J., Wolfe, S.

“…With tokamak devices developing towards higher heating powers, and carbon plasma facing components being increasingly replaced by high-Z materials like…”
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Power exhaust by SOL and pedestal radiation at ASDEX Upgrade and JET by Bernert, M., Wischmeier, M., Huber, A., Reimold, F., Lipschultz, B., Lowry, C., Brezinsek, S., Dux, R., Eich, T., Kallenbach, A., Lebschy, A., Maggi, C., McDermott, R., Pütterich, T., Wiesen, S.

“…•Stable operation with fully detached targets in all-metal devices demonstrated•Power exhaust achieved at highest heat fluxes with impurity seeding of N, Ne…”
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A new upper divertor with internal coils for ASDEX upgrade – Status of the project by Herrmann, A., Teschke, M., Zammuto, I., Cuevas, M., Dibon, M., Kallenbach, A., Lunt, T., Rohde, V., Schall, G., Vierle, T., Vorbrugg, S., Weißgerber, M., Zohm, H.

“…•The concept for a new upper divertor in ASDEX Upgrade to investigate alternative magnetic configurations is presented. It includes:•in-vessel integration…”
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Real-time wall conditioning by controlled injection of boron and boron nitride powder in full tungsten wall ASDEX Upgrade by Bortolon, A., Rohde, V., Maingi, R., Wolfrum, E., Dux, R., Herrmann, A., Lunsford, R., McDermott, R.M., Nagy, A., Kallenbach, A., Mansfield, D.K., Nazikian, R., Neu, R.

“…In ASDEX Upgrade with full-tungsten wall, boronization is an important tool to control tungsten sources and allow reliable operation at low collisionality. The…”
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Prospects of core–edge integrated no-ELM and small-ELM scenarios for future fusion devices by Viezzer, E., Austin, M.E., Bernert, M., Burrell, K.H., Cano-Megias, P., Chen, X., Cruz-Zabala, D.J., Coda, S., Faitsch, M., Février, O., Gil, L., Giroud, C., Happel, T., Harrer, G.F., Hubbard, A.E., Hughes, J.W., Kallenbach, A., Labit, B., Merle, A., Meyer, H., Paz-Soldan, C., Oyola, P., Sauter, O., Siccinio, M., Silvagni, D., Solano, E.R.

“…One of our grand challenges towards fusion energy is the achievement of a high-performance plasma core coupled to a boundary solution. The high confinement…”
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Neutral pressure and separatrix density related models for seed impurity divertor radiation in ASDEX Upgrade by Kallenbach, A., Bernert, M., Dux, R., Eich, T., Henderson, S.S., Pütterich, T., Reimold, F., Rohde, V., Sun, H.J.

“…•Outer divertor radiation database over broad H-mode data range in ASDEX Upgrade.•Radiation described by two different scalings, relating to impurity neutral…”
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Cracks avoidance with a modified solid tungsten divertor in ASDEX Upgrade by Zammuto, I., Li, M., Herrmann, A., Jaksic, N., Rohde, V., Balden, M., Vorbrugg, S., Matern, G., Greuner, H., Neu, R., Kallenbach, A.

“…To clarify the suitability of solid tungsten as plasma facing material, a new divertor, DIV-III, entered in operation in ASDEX Upgrade (AUG) in 2014. Since the…”
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The X-Point radiating regime at ASDEX Upgrade and TCV by Bernert, M., Wiesen, S., Février, O., Kallenbach, A., Koenders, J.T.W., Sieglin, B., Stroth, U., Bosman, T.O.S.J., Brida, D., Cavedon, M., David, P., Dunne, M.G., Henderson, S., Kool, B., Lunt, T., McDermott, R.M., Pan, O., Perek, A., Reimerdes, H., Sheikh, U., Theiler, C., van Berkel, M., Wijkamp, T., Wischmeier, M.

“…Future fusion reactors require a safe, steady-state divertor operation. With deep divertor detachment, which is typically induced by impurity seeding, the…”
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