Results 161 to 170 of about 108,499 (193)

Divertor geometry optimization for ASDEX Upgrade

Journal of Nuclear Materials, 1997
Abstract One of the critical questions to be solved for ITER (or any other reactor) is the power exhaust problem (compatible with particle exhaust). Optimized divertors have to be tested in existing geometries based mainly on the idea of closing them very efficiently to the main chamber and, by the choice of the plate and baffle geometry, positively ...
Schneider, R., Bosch, H., Neuhauser, J., Coster, D., Lackner, K., Kaufmann, M.   +5 more
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B2-Eirene modelling of ASDEX Upgrade

Journal of Nuclear Materials, 1997
Abstract The extension of the computational region of the coupled fluid plasma, Monte-Carlo neutrals code, B2-Eirene, to the plasma center is discussed. The simulation of completely detached H-mode plasma is presented, as is the modelling of He and Ne compression.
Coster, D., Schneider, R., Neuhauser, J., Bosch, H., Wunderlich, R., Fuchs, C., Mast, F., Kallenbach, A., Dux, R., Becker, G., Braams, B., Reiter, D.   +11 more
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MHD phenomena in ASDEX Upgrade and TEXTOR

Nuclear Fusion, 1999
MHD phenomena in ASDEX Upgrade in standard shear discharge regimes as well as in weak and reversed shear discharges are investigated. The onset of neoclassical tearing modes leads to the most serious β limit at ASDEX Upgrade. The βp value for the onset of neoclassical tearing modes is found to be proportional to the poloidal ion gyroradius for ...
S Günter, A Gude, H.R Koslowski, M Maraschek, S.D Pinches, S Sesnic, Q Yu, ASDEX Upgrade Team   +7 more
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The tungsten divertor experiment at ASDEX Upgrade

Plasma Physics and Controlled Fusion, 1996
Tungsten-coated tiles, manufactured by plasma spray on graphite, were mounted in the divertor of the ASDEX Upgrade tokamak and cover almost 90% of the surface facing the plasma in the strike zone. Over 600 plasma discharges have been performed to date, around 300 of which were auxiliary heated with heating powers up to 10 MW. The production of tungsten
Neu, R., Asmussen, K., Krieger, K., Thoma, A., Bosch, H., Deschka, S., Dux, R., Engelhardt, W., GarciaRosales, C., Gruber, O., Herrmann, A., Kallenbach, A., Kaufmann, M., Mertens V, Ryter, F., Rohde V, Roth, J., Sokoll, M., Stabler, A., Suttrop, W., Weinlich, M., Zohm, H., Alexander, M., Becker, G., Behler, K. ; https://orcid.org/0000-0003-2845-8024, Behringer, K., Behrisch, R., Bergmann, A., Bessenrodt-Weberpals, M., Brambilla, M., Brinkschulte, H., Büchl, K., Carlson, A., Chodura, R., Coster, D., Cupido, L., deBlank, H., Hempel, S., Drube, R., Fahrbach, H., Feist, J., Feneberg, W., Fiedler, S., Franzen, P., Fuchs, J., Fussmann, G., Gafert, J., Gehre, O., Gernhardt, J., Haas, G., Herppich, G., Herrmann, W., Hirsch, S., Hoek, M., Hoenen, F., Hofmeister, F., Hohenöcker, H., Jacobi, D., Junker, W., Kardaun, O., Kass, T., Kollotzek, H., Köppendörfer, W., Kurzan, B., Lackner, K., Lang, P., Lang, R., Laux, M., Lengyel, L., Leuterer, F., Manso, M., Maraschek, M., Mast, K., McCarthy, P., Meisel, D., Merkel, R., Müller, H., Münich, M., Murmann, H., Napiontek, B., Neu, G., Neuhauser, J., Niethammer, M., Noterdaeme, J., Pasch, E., Pautasso, G., Peeters, A., Pereverzev, G., Pitcher, C., Poschenrieder, W., Raupp, G., Reinmuller, K., Riedl, R., Rohr, H., Salzmann, H., Sandmann, W., Schilling, H., Schlögl, D., Schneider, H., Schneider, R., Schneider, W., Schramm, G., Schweinzer, J., Scott, B., Seidel, U., Serra, F., Speth, E., Silva, A., Steuer, K., Stober, J., Streibl, B., Treutterer, W., Troppmann, M., Tsois, N., Ulrich, M., Varela, P., Verbeek, H., Verplancke, P., Vollmer, O., Wedler, H., Wenzel, U., Wesner, F., Wolf, R., Wunderlich, R., Zasche, D., Zehetbauer, T., Zehrfeld, H.   +126 more
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ASDEX UPGRADE: THE FIRST PERIOD OF OPERATION

1993
The first plasma in ASDEX Upgrade (AUG) was produced on 21stMarch '91 after more than 8 years of design, manufacture, and assembly. During the first operational period until August '92, with 1949 shots, the control and safety systems were commissioned in parallel with plasma discharges. Most discharges were run with He, but also H and D discharges were
Streibl, B., Behler, K. ; https://orcid.org/0000-0003-2845-8024, McCarthy, P., Drube, R., Ernesti, J., Finkelmeyer, H., Gernhardt, J., Gruber, O., Herppich, G., Hupfloher, H., Jacobi, D., Klement, G., Kollotzek, H., Koeppendoerfer, W., Lackner, K., Mattes, K., Mertens, V., Neu, G., Noterdaeme, J., Oswald, J., Poschenrieder, W., Raupp, G., Richter, H., Richter, T., Schneider, H., Schramm, G., Schweizer, S., Seidel, U., Vernickel, H., Wieczorek, A., Wesner, F., Woyke, W., Zasche, D.   +32 more
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A “Universal Time” system for ASDEX upgrade

Fusion Engineering and Design, 2003
For the new generation of intelligent controllers for plasma diagnostics, discharge control and long-pulse experiment control a new time system supporting steady state real-time operation has been devised. A central unit counts time at nanosecond resolution, covering more than the experiment lifetime.
Raupp, G., Cole, R., Behler, K. ; https://orcid.org/0000-0003-2845-8024, Fitzek, M., Heimann, P., Lohs, A., Lüddecke, K., Neu, G., Schacht, J., Treutterer, W., Zasche, D., Zehetbauer, T., Zilker, M., ASDEX Upgrade Team   +13 more
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Experience with the ECRH system of ASDEX-Upgrade

Fusion Engineering and Design, 2001
The 140 GHz ASDEX-Upgrade ECRH system uses four gyrotrons to generate a total power of 2 MW in a Gaussian beam for 2 s. External magnetic perturbations, originating from the poloidal stray magnetic field of the tokamak air core transformer, and also from the cryomagnet of the adjacent gyrotron, influence the startup of the oscillation and the electron ...
Leuterer, F., Beckmann, M., Brinkschulte, H., Monaco, F., Münich, M., Ryter, F., Schütz, H., Empacher, L., Gantenbein, G., Förster, W., Kasparek, W., Schüller, P., Schwörer, K., Borchegowski, A., Fix, A., Illin, V., Popov, L., Sigalaev, V., Tai, E.   +18 more
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The RF system and matching procedure for ASDEX and ASDEX upgrade

Fusion Engineering and Design, 1994
Abstract The ICRH system outline of both the former ASDEX and the present ASDEX Upgrade experiment is described with regard to the matching procedure. The matching experience gained from the operation of ICRH on ASDEX lead to improvements in the ICRH operation on ASDEX Upgrade.
Hofmeister, F., Braun, F., Wesner, F.
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ASDEX UPGRADE POWER SUPPLY SYSTEM

1986
ASDEX Upgrade, the successor to the ASDEX device, is a new tokamak now under construction at Garching [1]. This experiment has a reactor-like divertor with the divertor coils located outside the toroidal field coils. This makes the power and energy requirements high since the total number of ampere-turns of the multipole coils increases approximately ...
Blaumoser, M., Kottmair, M., Wieczorek, A., Gruber, O.   +3 more
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POSITION AND SHAPE CONTROL ON ASDEX-UPGRADE

1993
ASDEX Upgrade utilizes a feedback control system for the plasma current, position and shape, which is novel in its approach to control local and global equilibrium parameters, its algorithm for the determination of the plasma equilibrium (via a function parameterization technique from magnetic measurements), its fully digital implementation, and its ...
Gruber, O., Gernhardt, J., McCarthy, P., Lackner, K., Seidel, U., Schneider, W., Woyke, W., Zehrfeld, H.   +7 more
openaire   +2 more sources