Scientific Commons: D. Naujoks

Major Results from Wendelstein 7-AS Stellarator (2007)

F. Wagner, R. Burhenn, F. Gadelmeier, J. Geiger, M. Hirsch, H. P. Laqua, ...

island divertor operation and the modelling of the results with the EMC3/EIRENE code- confinement issues with emphasis on the differences to tokamaks (isotope effect, density scaling, lack of profile...

Island divertor experiments on the Wendelstein 7-AS stellarator (2007)

K. Mccormick, P. Grigull, R. Burhenn, R. Brakel, H. Ehmler, Y. Feng, ...

Decomposition and sticking of hydrocarbons in the plasma generator PSI-II (2007)

Bohmeyer, W., Markin, A., Naujoks, D., Koch, B., Krenz, G., Baudach, M., ...

Plasma-Surface Interaction in Controlled Fusion (2007)

Naujoks, D.

Plasma-Material Interaction in Controlled Fusion (2006)

Naujoks, D.

Transport and deposition of injected hydrocarbons in the plasma generator PSI-2 (2005)

Bohmeyer,W., Naujoks,D., Markin,A., Arkhipov,I., Koch,B., Schröder,D., ...

Surface Temperature Measurements of Carbon Materials in Fusion Devices (2005)

Hildebrandt,D., Naujoks,D., Sünder,D.

Physics, Technologies and Status of the Wendelstein 7-X Device (2005)

Wagner,F., Andreeva,T., Baldzuhn,J., Benndorf,A., Bolt,H., Boscary,J., ...

Transport and Deposition of Hydrocarbons in the Plasma Generator PSI-2: Experiment and Modelling (2005)

Bohmeyer,W., Naujoks,D., Fussmann,G., Markin,A., Loarte,A., Federici,G.

Transport and deposition of injected hydrocarbons in the plasma generator PSI-2 (2005)

Bohmeyer, W., Naujoks, D., Markin, A., Arkhipov, I., Koch, B., Schröder, D., ...

Surface Temperature Measurements of Carbon Materials in Fusion Devices (2005)

Hildebrandt, D., Naujoks, D., Sünder, D.

Physics, Technologies and Status of the Wendelstein 7-X Device (2005)

Wagner, F., Andreeva, T., Baldzuhn, J., Benndorf, A., Bolt, H., Boscary, J., ...

Transport and Deposition of Hydrocarbons in the Plasma Generator PSI-2: Experiment and Modelling (2005)

Bohmeyer, W., Naujoks, D., Fussmann, G., Markin, A., Loarte, A., Federici, G.

Physics, technologies, and status of the Wendelstein 7-X device. (2005)

Wagner, F., Andreeva, T., Baldzuhn, J., Benndorf, A., Bolt, H., Boscary, J., ...

20th IAEA Fusion Energy Conf., Vilamoura, P, November 1-6, 2004

Transport and Deposition of Hydrocarbons in the Plasma Generator PSI-2 (2004)

Naujoks,D., Bohmeyer,W., Markin,A., Arkhipov,I., Carl,P., Koch,B., ...

Divertors for Helical Devices: Concepts, Plans, Results, and Problems (2004)

König,R., Grigull,P., McCormick,K., Feng,Y., Ehmler,H., Gadelmeier,F., ...

Stationary and transient heat load in the island divertor of W7-AS (2004)

Gadelmeier,F., Herrmann,A., Hildebrandt,D., McCormick,K., Naujoks,D., Grigull,P., ...

Transport and Deposition of Hydrocarbons in the Plasma Generator PSI-2 (2004)

Naujoks, D., Bohmeyer, W., Markin, A., Arkhipov, I., Carl, P., Koch, B., ...

Divertors for Helical Devices: Concepts, Plans, Results, and Problems (2004)

König, R., Grigull, P., McCormick, K., Feng, Y., Ehmler, H., Gadelmeier, F., ...

Stationary and transient heat load in the island divertor of W7-AS (2004)

Gadelmeier, F., Herrmann, A., Hildebrandt, D., McCormick, K., Naujoks, D., Grigull, P., ...

Physics, technologies, and status of the Wendelstein 7-X device. (2004)

Wagner, F., Andreeva, T., Baldzuhn, J., Benndorf, A., Bolt, H., Boscary, J., ...

20th IAEA Fusion Energy Conf., Vilamoura, P, November 1-6, 2004

Thermographic observation of the divertor target plates in the stellarators W7-AS and W7-X (2003)

Hildebrandt,D., Gadelmeier,F., Grigull,P., McCormick,K., Naujoks,D., Sünder,D., ...

Thermography is applied on the stellarator W7-AS to monitor the thermal load of the recently installed divertor targets. A three dimensional numerical code was developed to evaluate power fluxes...

Island divertor experiments on the Wendelstein 7-AS stellarator (2003)

McCormick,K., Grigull,P., Burhenn,R., Brakel,R., Ehmler,H., Feng,Y., ...

A promising new operational regime on the Wendelstein stellarator W7-AS has been discovered, fulfilling the conditions of optimal core behavior in combination with edge parameters suitable for...

Divertor operation in stellarators: results from W7-AS and implications for future devices (2003)

Grigull,P., McCormick,K., Renner,H., Masuzaki,S., König,R., Baldzuhn,J., ...

The research on divertors for stellarators is at the beginning. Extensive studies are being prepared on large helical device (LHD) and W7-X. W7-AS is now being operated with an open island divertor...

Influence of magnetic field configurations on divertor plasma parameters in the W7-AS stellarator (2003)

Grigull,P., McCormick,K., Feng,Y., Werner,A., Brakel,R., Ehmler,H., ...

The new island divertor in W7-AS enables quasi steady-state operation with NBI at very high density including scenarios with stable detachment from the targets. Experiments with reversed B-field...

Major results from Wendelstein 7-AS stellarator (2003)

Wagner,F., Burhenn,R., Gadelmeier,F., Geiger,J., Hirsch,M., Laqua,H. P., ...

W7-AS operates with an island divertor, which utilises the natural edge islands of the low-shear stellarator configuration to divert the plasma. High densities (up to 4×1020m-3) and partly detached...

Effects of the New Island Divertor on the Plasma Performance in the W7-AS Stellarator (2003)

Grigull,P., McCormick,K., Baldzuhn,J., Burhenn,R., Brakel,R., Ehmler,H., ...

The island divertor in the W7-AS stellarator enables access to a new NBI-heated, high density operating regime with promising confinement properties. This regime — the High Density H-Mode —...

Improved Performance of the W7-AS Stellarator with the New Island Divertor (2003)

Brakel,R., Grigull,P., McCormick,K., Burhenn,R., Feng,Y., Sardei,F., ...

The island divertor concept has successfully been realized at W7-AS. The divertor gives access to a new NBI-heated high density regime with densities up to 4×10²⁰m-3 and energy confinement well...

Island divertor experiments on the Wendelstein 7-AS stellarator (2003)

McCormick,K., Grigull,P., Burhenn,R., Brakel,R., Ehmler,H., Feng,Y., ...

Major results from Wendelstein 7-AS stellarator (2003)

Wagner,F., Burhenn,R., Gadelmeier,F., Geiger,J., Hirsch,M., Laqua,H. P., ...

Thermographic observation of the divertor target plates in the stellarators W7-AS and W7-X (2003)

Hildebrandt, D., Gadelmeier, F., Grigull, P., McCormick, K., Naujoks, D., Sünder, D., ...

Thermography is applied on the stellarator W7-AS to monitor the thermal load of the recently installed divertor targets. A three dimensional numerical code was developed to evaluate power fluxes...

Island divertor experiments on the Wendelstein 7-AS stellarator (2003)

McCormick, K., Grigull, P., Burhenn, R., Brakel, R., Ehmler, H., Feng, Y., ...

A promising new operational regime on the Wendelstein stellarator W7-AS has been discovered, fulfilling the conditions of optimal core behavior in combination with edge parameters suitable for...

Divertor operation in stellarators: results from W7-AS and implications for future devices (2003)

Grigull, P., McCormick, K., Renner, H., Masuzaki, S., König, R., Baldzuhn, J., ...

The research on divertors for stellarators is at the beginning. Extensive studies are being prepared on large helical device (LHD) and W7-X. W7-AS is now being operated with an open island divertor...

Influence of magnetic field configurations on divertor plasma parameters in the W7-AS stellarator (2003)

Grigull, P., McCormick, K., Feng, Y., Werner, A., Brakel, R., Ehmler, H., ...

The new island divertor in W7-AS enables quasi steady-state operation with NBI at very high density including scenarios with stable detachment from the targets. Experiments with reversed B-field...

Major results from Wendelstein 7-AS stellarator (2003)

Wagner, F., Burhenn, R., Gadelmeier, F., Geiger, J., Hirsch, M., Laqua, H. P., ...

W7-AS operates with an island divertor, which utilises the natural edge islands of the low-shear stellarator configuration to divert the plasma. High densities (up to 4×1020m-3) and partly detached...

Effects of the New Island Divertor on the Plasma Performance in the W7-AS Stellarator (2003)

Grigull, P., McCormick, K., Baldzuhn, J., Burhenn, R., Brakel, R., Ehmler, H., ...

The island divertor in the W7-AS stellarator enables access to a new NBI-heated, high density operating regime with promising confinement properties. This regime — the High Density H-Mode —...

Improved Performance of the W7-AS Stellarator with the New Island Divertor (2003)

Brakel, R., Grigull, P., McCormick, K., Burhenn, R., Feng, Y., Sardei, F., ...

The island divertor concept has successfully been realized at W7-AS. The divertor gives access to a new NBI-heated high density regime with densities up to 4×10²⁰m-3 and energy confinement well...

Island divertor experiments on the Wendelstein 7-AS stellarator (2003)

McCormick, K., Grigull, P., Burhenn, R., Brakel, R., Ehmler, H., Feng, Y., ...

Experimental observation of Marfes in the W7-AS stellarator (2002)

Wenzel,U., McCormick,K., Hildebrandt,D., Klose,S., Naujoks,D., Thomsen,H.

In the new high-density H-mode of the W7-AS stellarator with island divertor several thermal instabilities were found. Marfes (multifaceted asymmetric radiation from the edge) were observed inboard...

New advanced operational regime on the W7-AS stellarator (2002)

McCormick,K., Grigull,P., Burhenn,R., Brakel,R., Ehmler,H., Feng,Y., ...

A promising new plasma operational regime on the Wendelstein stellarator W7-AS has been discovered. It is extant above a threshold density and characterized by flat density profiles, high energy and...

Island divertor experiments on the W7-AS stellarator (2002)

Gadelmeier,F., Grigull,P., McCormick,K., Brakel,R., Burhenn,R., Ehmler,H., ...

Plasma performance of Wendelstein 7-AS with the new boundary-island divertor modules (2002)

McCormick,K., Grigull,P., Burhenn,R., Brakel,R., Ehmler,H., Feng,Y., ...

New advanced operational regime on the W7-AS stellarator (2002)

McCormick, K., Grigull, P., Burhenn, R., Brakel, R., Ehmler, H., Feng, Y., ...

A promising new plasma operational regime on the Wendelstein stellarator W7-AS has been discovered. It is extant above a threshold density and characterized by flat density profiles, high energy and...

Ion confinement in a linear plasma column (2002)

Naujoks, D.

It is shown by means of PIC (particle-in-cell) simulations that in magnetized plasmas with pressure gradients local charge separation occurs due to different ion and electron gyration radii. The...

Experimental observation of Marfes in the W7-AS stellarator (2002)

Wenzel, U., McCormick, K., Hildebrandt, D., Klose, S., Naujoks, D., Thomsen, H.

In the new high-density H-mode of the W7-AS stellarator with island divertor several thermal instabilities were found. Marfes (multifaceted asymmetric radiation from the edge) were observed inboard...

Island divertor experiments on the W7-AS stellarator (2002)

Gadelmeier, F., Grigull, P., McCormick, K., Brakel, R., Burhenn, R., Ehmler, H., ...

Plasma performance of Wendelstein 7-AS with the new boundary-island divertor modules (2002)

McCormick, K., Grigull, P., Burhenn, R., Brakel, R., Ehmler, H., Feng, Y., ...

The Impact of the New Island Divertor on the Plasma Performance in the W7-AS Stellarator (2002)

Grigull, P., McCormick, K.., Burhenn, R., Brakel, R., Ehrmler, H., Feng, Y., ...

Island divertor investigations on the W7-AS stellarator (2001)

König,R., McCormick,K., Feng,Y., Fiedler,S., Grigull,P., Hildebrandt,D., ...

On the way to divertor detachment in the W7-AS stellarator (2001)

McCormick,K., Grigull,P., König,R., Burhenn,R., Ehmler,H., Feng,Y., ...

Combined sheath and thermal analysis of overheated surfaces in fusion devices (2001)

Naujoks,D., Brooks,J.N.