Search Results - "Mertens, Ph"

Investigation of the impact of transient heat loads applied by laser irradiation on ITER-grade tungsten by Huber, A, Arakcheev, A, Sergienko, G, Steudel, I, Wirtz, M, Burdakov, A V, Coenen, J W, Kreter, A, Linke, J, Mertens, Ph, Philipps, V, Pintsuk, G, Reinhart, M, Samm, U, Shoshin, A, Schweer, B, Unterberg, B, Zlobinski, M

“…Cracking thresholds and crack patterns in tungsten targets after repetitive ITER-like edge localized mode (ELM) pulses have been studied in recent simulation…”
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Impact of the ITER-like wall on divertor detachment and on the density limit in the JET tokamak by Huber, A., Brezinsek, S., Groth, M., de Vries, P.C., Riccardo, V., van Rooij, G., Sergienko, G., Arnoux, G., Boboc, A., Bilkova, P., Calabro, G., Clever, M., Coenen, J.W., Beurskens, M.N.A., Eich, T., Jachmich, S., Lehnen, M., Lerche, E., Marsen, S., Matthews, G.F., McCormick, K., Meigs, A.G., Mertens, Ph, Philipps, V., Rapp, J., Samm, U., Stamp, M., Wischmeier, M., Wiesen, S.

“…L-mode and H-mode density limits with the ITER-like wall (ILW) have been investigated in the recent experimental campaign and compared with experiments in the…”
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First direct comparative test of single crystal rhodium and molybdenum mirrors for ITER diagnostics by Litnovsky, A., Krasikov, Yu, Rasinski, M., Kreter, A., Linsmeier, Ch, Mertens, Ph, Unterberg, B., Breuer, U., Wegener, T.

“…•Optical and laser-based diagnostics in ITER will use mirrors to observe plasma.•Single crystal materials are among the best mirror materials.•Single crystal…”
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Erosion and screening of tungsten during inter/intra-ELM periods in the JET-ILW divertor by Huber, A., Brezinsek, S., Huber, V., Sertoli, M., Sergienko, G., Borodkina, I., Baruzzo, M., Kirschner, A., Borodin, D., Mailloux, J., Aleiferis, S., Carvalho, P., Lawson, K., Linsmeier, Ch, Meigs, A., Menmuir, S., Mertens, Ph, Pawelec, E., Shaw, A.

“…Intra-ELM tungsten sources, which dominate the total W source, are quantified in the inner and outer divertor of JET-ILW. The amount of the sputtered W atoms…”
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Investigation of H-mode density limit in mixed protium–deuterium plasmas at JET with ITER-like wall by Huber, A., Sergienko, G., Groth, M., Keeling, D., Wischmeier, M., Douai, D., Lerche, E., Perez von Thun, C., Brezinsek, S., Huber, V., Boboc, A., Brix, M., Carvalho, I.S., Chankin, A.V., Delabie, E., Jepu, I., Kachkanov, V., Kiptily, V., Kirov, K., Linsmeier, Ch, Litherland-Smith, E., Lowry, C.G., Maggi, C.F., Mailloux, J., Meigs, A.G., Mertens, Ph, Poradzinski, M., Zastrow, K.-D., Zlobinski, M.

“…•Analysis reveals a clear relationship between isotope mass and H-mode density limit.•Hydrogen exhibits significantly lower density limit, up to 35% reduction…”
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Calculation of cracking under pulsed heat loads in tungsten manufactured according to ITER specifications by Arakcheev, A.S., Skovorodin, D.I., Burdakov, A.V., Shoshin, A.A., Polosatkin, S.V., Vasilyev, A.A., Postupaev, V.V., Vyacheslavov, L.N., Kasatov, A.A., Huber, A., Mertens, Ph, Wirtz, M., Linsmeier, Ch, Kreter, A., Löwenhoff, Th, Begrambekov, L., Grunin, A., Sadovskiy, Ya

“…A mathematical model of surface cracking under pulsed heat load was developed. The model correctly describes a smooth brittle–ductile transition. The elastic…”
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The radiated power limit in impurity seeded JET-ILW plasmas by Huber, A., Wischmeier, M., Wiesen, S., Bernert, M., Chankin, A.V., Aleiferis, S., Brezinsek, S., Huber, V., Sergienko, G., Giroud, C., Groth, M., Jachmich, S., Linsmeier, Ch, Lomanowski, B., Lowry, C., Matthews, G.F., Meigs, A.G., Mertens, Ph, Silburn, S., Telesca, G.

“…The total radiated fraction is examined in high density H-mode plasmas (Greenwald fraction of about 85 %) in JET by the variation of the auxiliary heating…”
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Bulk tungsten in the JET divertor: Potential influence of the exhaustion of ductility and grain growth on the lifetime by Mertens, Ph, Thompson, V., Matthews, G.F., Nicolai, D., Pintsuk, G., Riccardo, V., Devaux, S., Sieglin, B.

“…The divertor of the ITER-like Wall in JET currently includes a solid tungsten row for the outer strike point. The use of plasma-facing tungsten in fusion…”
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Thermal analysis of an exposed tungsten edge in the JET divertor by Arnoux, G., Coenen, J., Bazylev, B., Corre, Y., Matthews, G.F., Balboa, I., Clever, M., Dejarnac, R., Devaux, S., Eich, T., Gauthier, E., Frassinetti, L., Horacek, J., Jachmich, S., Kinna, D., Marsen, S., Mertens, Ph, Pitts, R.A., Rack, M., Sergienko, G., Sieglin, B., Stamp, M., Thompson, V.

“…•We provide experimental evidences that melting of the JET tungsten divertor is achieved by transients only.•The measurements show that less than half the…”
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Hydrocarbon injection for quantification of chemical erosion yields in tokamaks by Brezinsek, S., Pospieszczyk, A., Borodin, D., Stamp, M.F., Pugno, R., McLean, A.G., Fantz, U., Manhard, A., Kallenbach, A., Brooks, N.H., Groth, M., Mertens, Ph, Philipps, V., Samm, U.

“…Chemical erosion of carbon can be described as function of the incident ion flux, the ion energy and the surface temperature. Spectroscopy on the hydrocarbon…”
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Deuterium retention in tungsten under combined high cycle ELM-like heat loads and steady-state plasma exposure by Huber, A., Sergienko, G., Wirtz, M., Steudel, I., Arakcheev, A., Brezinsek, S., Burdakov, A., Dittmar, T., Esser, H.G., Freisinger, M., Kreter, A., Linke, J., Linsmeier, Ch, Mertens, Ph, Möller, S., Reinhart, M., Terra, A., Unterberg, B.

“…•The impact on the deuterium retention of simultaneous exposure to laser and plasma has been compared to the impact of sequential exposure and to plasma…”
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Comparative H-mode density limit studies in JET and AUG by Huber, A., Bernert, M., Brezinsek, S., Chankin, A.V., Sergienko, G., Huber, V., Wiesen, S., Abreu, P., Beurskens, M.N.A., Boboc, A., Brix, M., Calabrò, G., Carralero, D., Delabie, E., Eich, T., Esser, H.G., Groth, M., Guillemaut, C., Jachmich, S., Järvinen, A., Joffrin, E., Kallenbach, A., Kruezi, U., Lang, P., Linsmeier, Ch, Lowry, C.G., Maggi, C.F., Matthews, G.F., Meigs, A.G., Mertens, Ph, Reimold, F., Schweinzer, J., Sips, G., Stamp, M., Viezzer, E., Wischmeier, M., Zohm, H.

“…•Operation phases are identical for both tokamaks. Density limit is found close to the Greenwald limit.•Detachment, as well as the X-point MARFE itself, does…”
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Toroidal plasma rotation induced by the dynamic ergodic divertor in the TEXTOR Tokamak by FINKEN, K. H, ABDULLAEV, S. S, NICOLAI, A, WOLF, R. C, ZIMMERMANN, O, DE BAAR, M, BERTSCHINGER, G, BIEL, W, BREZINSEK, S, BUSCH, C, DONNE, A. J. H, ESSER, H. G, DE BOCK, M. F. M, FARSHI, E, GERHAUSER, H, GIESEN, B, HARTING, D, HOEKZEMA, J. A, HOGEWEIJ, G. M. D, HÜTTEMANN, P. W, JACHMICH, S, JAKUBOWSKA, K, KALUPIN, D, VON HELLERMANN, M, KELLY, F, KIKUCHI, Y, KIRSCHNER, A, KOCH, R, KORTEN, M, KRETER, A, KROM, J, KRUEZI, U, LAZAROS, A, LITNOVSKY, A, JAKUBOWSKI, M, LOOZEN, X, LOPES CARDOZO, N. J, LYSSOIVAN, A, MARCHUK, O, MATSUNAGA, G, MERTENS, Ph, MESSIAEN, A, NEUBAUER, O, NODA, N, PHILIPPS, V, JASPERS, R, POSPIESZCZYK, A, REISER, D, REITER, D, ROGISTER, A. L, SAKAMOTO, M, SAVTCHKOV, A, SAMM, U, SCHMITZ, O, SCHORN, R. P, SCHWEER, B, KOSLOWSKI, H. R, KRÄMER-FLECKEN, A, LEHNEN, M, LIANG, Y

“…The first results of the Dynamic Ergodic Divertor in TEXTOR, when operating in the m/n=3/1 mode configuration, are presented. The deeply penetrating external…”
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Improved radiation measurements on JET – First results from an upgraded bolometer system by Huber, A., McCormick, K., Andrew, P., de Baar, M.R., Beaumont, P., Dalley, S., Fink, J., Fuchs, J.C., Fullard, K., Fundamenski, W., Ingesson, L.C., Kirnev, G., Lomas, P., Mast, F., Jachmich, S., Matthews, G.F., Mertens, Ph, Meigs, A., Philipps, V., Rapp, J., Saibene, G., Sanders, S., Sartori, R., Stamp, M.F., Zeidner, W.

“…To improve the quality of radiation measurements, two new bolometric cameras with horizontal and vertical views of the plasma cross-section have been installed…”
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Detailed design of a solid tungsten divertor row for JET in relation to the physics goals by Mertens, Ph

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Velocity distribution of helium and neon atoms released from graphite and tungsten limiters in TEXTOR by Lindner, P., Brix, M., Mertens, Ph, Pospieszczyk, A., Samm, U., Schweer, B., Unterberg, B.

“…The release mechanisms of noble gases from plasma-facing components were observed spectroscopically in the TEXTOR plasma boundary by determining the velocity…”
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Molecular and Atomic Deuterium in the Plasma Edge of TEXTOR-94 by Brezinsek, S., Mertens, Ph, Pospieszczyk, A., Sergienko, G., Greenland, P. T.

“…This paper gives a short overview of the spectroscopic measurements of atomic and molecular deuterium in front of a graphite test limiter in the plasma edge of…”
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Magnetic configuration effects on the Wendelstein 7-X stellarator by Dinklage, A., Beidler, C. D., Helander, P., Fuchert, G., Maaßberg, H., Rahbarnia, K., Sunn Pedersen, T., Turkin, Y., Wolf, R. C., Alonso, A., Andreeva, T., Blackwell, B., Bozhenkov, S., Buttenschön, B., Czarnecka, A., Effenberg, F., Feng, Y., Geiger, J., Hirsch, M., Höfel, U., Jakubowski, M., Klinger, T., Knauer, J., Kocsis, G., Krämer-Flecken, A., Kubkowska, M., Langenberg, A., Laqua, H. P., Marushchenko, N., Mollén, A., Neuner, U., Niemann, H., Pasch, E., Pablant, N., Rudischhauser, L., Smith, H. M., Schmitz, O., Stange, T., Szepesi, T., Weir, G., Windisch, T., Wurden, G. A., Zhang, D.

“…The two leading concepts for confining high-temperature fusion plasmas are the tokamak and the stellarator. Tokamaks are rotationally symmetric and use a large…”
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Conceptual studies on spectroscopy and radiation diagnostic systems for plasma control on DEMO by Gonzalez, W., Biel, W., Mertens, Ph, Tokar, M., Marchuk, O., Linsmeier, Ch

“…The roadmap to the realization of fusion energy describes a path towards the development of a DEMO tokamak reactor, which is expected to provide electricity…”
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Influence of Methane Fuelling on the 2-D Line Radiation Distribution in the JET MkIIGB Divertor by Huber, A, Brezinsek, S, Coad, P, Itami, K, Jachmich, S, Kirschner, A, Matthews, G F, Mertens, Ph, Philipps, V, Popieszczyk, A, Schweer, B, Sergienko, G, Stamp, M, Contributors to the EFDA-JET Work programme

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