Scientific Commons: D. Hildebrandt

Wastewater is generated in the batch production process of water-based paints when vessels and filling lines are washed between batches. This results in a diluted paint wash water stream. The wash...

Thermal response of structural and contaminated carbon surfaces to heat pulses (2007)

Hildebrandt, D., Dübner, A.

Optical design study for divertor observation at the stellarator W7-X (2006)

König, R., Hildebrandt, D., Hübner, T., Klinkhamer, F., Moddemeijer, K., Vliegenthart, W.

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

Hildebrandt,D., Naujoks,D., Sünder,D.

Development of an actively cooled periscope head suitable for divertor observation during quasi-continuous operation of the W7-X stellarator (2005)

König,R., Grosser,K., Hildebrandt,D., Ogorodnikova,O. V., Von Sehren,C., Klinger,T.

W7-AS: One step of the Wendelstein stellarator line (2005)

Wagner,F., Baeumel,S., Baldzuhn,J., Basse,N., Brakel,R., Burhenn,R., ...

Exposure of metal mirrors in the scrape-off layer of TEXTOR (2005)

Wienhold,P., Litnovski,A., Phillips,V., Schweer,B., Sergienko,G., Oelhafen,P., ...

Thermal Surface Properties of CFC-NB31 (2005)

Hildebrandt,D., Boscary,J., Roedig,M.

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

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

Development of an actively cooled periscope head suitable for divertor observation during quasi-continuous operation of the W7-X stellarator (2005)

König, R., Grosser, K., Hildebrandt, D., Ogorodnikova, O. V., Von Sehren, C., Klinger, T.

W7-AS: One step of the Wendelstein stellarator line (2005)

Wagner, F., Baeumel, S., Baldzuhn, J., Basse, N., Brakel, R., Burhenn, R., ...

Exposure of metal mirrors in the scrape-off layer of TEXTOR (2005)

Wienhold, P., Litnovski, A., Phillips, V., Schweer, B., Sergienko, G., Oelhafen, P., ...

Thermal Surface Properties of CFC-NB31 (2005)

Hildebrandt, D., Boscary, J., Roedig, M.

Nonlinear Heat Transport in Anisotropic Divertor Targets Irradiated by Laser Pulses (2004)

Bachmann,P., Hildebrandt,D., Sünder,D.

Investigation of Infrared Emission from Carbon Microstructure on a 30 Micron Spatial Scale (2004)

Herrmann,A., Balden,M., Bohmeyer,W., Hildebrandt,D.

Surface Layer Deposition in ASDEX Upgrade with a Tungsten Wall as Measured by SIMS, AES and PIXE (2004)

Schneider,W., Rohde,V., Krieger,K., Hildebrandt,D., Neu,R.

The Influence of Contamination Layers on Surface Temperature Measurements of Carbon Materials in Fusion Devices (2004)

Hildebrandt,D., Sünder,D.

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

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

Development of cooled UV, visible and IR windows for quasicontinuous operation of the W7-X stellarator (2004)

König,R., Ogorodnikova,O., Hildebrandt,D., Grosser,K., Sehren,C. Von, Baldzuhn,J., ...

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., ...

Temperature Measurements of Carbon Materials in Fusion Devices at High Heat Fluxes (2004)

Hildebrandt,D., Sünder,D., Herrmann,A.

Nonlinear Heat Transport in Anisotropic Divertor Targets Irradiated by Laser Pulses (2004)

Bachmann, P., Hildebrandt, D., Sünder, D.

Investigation of Infrared Emission from Carbon Microstructure on a 30 Micron Spatial Scale (2004)

Herrmann, A., Balden, M., Bohmeyer, W., Hildebrandt, D.

Surface Layer Deposition in ASDEX Upgrade with a Tungsten Wall as Measured by SIMS, AES and PIXE (2004)

Schneider, W., Rohde, V., Krieger, K., Hildebrandt, D., Neu, R., ASDEX Upgrade Team

The Influence of Contamination Layers on Surface Temperature Measurements of Carbon Materials in Fusion Devices (2004)

Hildebrandt, D., Sünder, D.

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

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

Development of cooled UV, visible and IR windows for quasicontinuous operation of the W7-X stellarator (2004)

König, R., Ogorodnikova, O., Hildebrandt, D., Grosser, K., Sehren, C. Von, Baldzuhn, J., ...

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., ...

Temperature Measurements of Carbon Materials in Fusion Devices at High Heat Fluxes (2004)

Hildebrandt, D., Sünder, D., Herrmann, A.

Development of Cooled UV, Visible and IR Windows for Quasicontinuous Operation of the W7-X Stellarator (2004)

Koenig, R., Ogorodnikova, O., Hildebrandt, D., Grosser, K., Sehren, C. Von, Baldzuhn, J., ...

Arcing at B4C-covered limiters exposed to a SOL-plasma (2003)

Laux,M., Schneider,W., Wienhold,P., Jüttner,B., Huber,A., Balden,M., ...

Plasma sprayed B4C-layers considered as wall coatings for the W7X stellarator have been studied during and after exposure to TEXTOR and after arcing experiments in vacuum. Arcing through the B₄C...

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...

Short and long range transport of materials eroded from wall components in fusion devices (2003)

Wienhold,P., Philipps,V., Kirschner,A., Huber,A., Von Seggern,J., Esser,H. G., ...

Carbon sources and the sinks have been quantified in TEXTOR and are discussed in terms of short and long range transport. The major source (22 g/h) is the graphite belt limiter, but part (10 g/h) of...

Erosion and deposition at the ALT-II limiter of TEXTOR (2003)

Mayer,M., Wienhold,P., Hildebrandt,D., Schneider,W.

A new method for the determination of massive erosion and deposition on plasma facing components has been developed and was tested successfully on a graphite tile of the ALT-II limiter of TEXTOR. The...

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...

Divertor concept for the Wendelstein 7-X stellarator: Theoretical studies of the boundary and engineering (2003)

Renner,H., Boscary,J., Grote,H., Schneider,R., Sharma,D., Hildebrandt,D., ...

The stellarator Wendelstein 7-X is under construction in Greifswald. For energy and particle exhaust under stationary conditions ten divertor units are arranged along the helical edge of the...

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 —...

Assessment of Intrinsic Impurity Behaviour in ASDEX Upgrade (2003)

Neu,R., Pugno,R., Rohde,V., Dux,R., Eich,T., Fahrbach,H. U., ...

Heat Propagation in Anisotropic Targets Irradiated by Laser Pulses (2003)

Bachmann,P., Hildebrandt,D., Sünder,D.

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...

Ion beam analysis methods in the studies of plasma facing materials in controlled fusion devices (2003)

Rubel,M., Wienhold,P., Hildebrandt,D.

Application of ion beam analysis techniques in the studies of material transport and fuel inventory in the controlled fusion devices is exemplified. Enhanced proton scattering on the carbon isotopes...

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., ...

An experimental simulation of distillation column profiles using a batch apparatus (2003)

Tapp, M., Kauchali, S., Hausberger, B., McGregor, C., Hildebrandt, D., Glasser, D.

Arcing at B4C-covered limiters exposed to a SOL-plasma (2003)

Laux, M., Schneider, W., Wienhold, P., Jüttner, B., Huber, A., Balden, M., ...

Plasma sprayed B4C-layers considered as wall coatings for the W7X stellarator have been studied during and after exposure to TEXTOR and after arcing experiments in vacuum. Arcing through the B₄C...

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...

Short and long range transport of materials eroded from wall components in fusion devices (2003)

Wienhold, P., Philipps, V., Kirschner, A., Huber, A., Von Seggern, J., Esser, H. G., ...

Carbon sources and the sinks have been quantified in TEXTOR and are discussed in terms of short and long range transport. The major source (22 g/h) is the graphite belt limiter, but part (10 g/h) of...

Erosion and deposition at the ALT-II limiter of TEXTOR (2003)

Mayer, M., Wienhold, P., Hildebrandt, D., Schneider, W.

A new method for the determination of massive erosion and deposition on plasma facing components has been developed and was tested successfully on a graphite tile of the ALT-II limiter of TEXTOR. The...

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...

Divertor concept for the Wendelstein 7-X stellarator: Theoretical studies of the boundary and engineering (2003)

Renner, H., Boscary, J., Grote, H., Schneider, R., Sharma, D., Hildebrandt, D., ...

The stellarator Wendelstein 7-X is under construction in Greifswald. For energy and particle exhaust under stationary conditions ten divertor units are arranged along the helical edge of the...

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 —...

Assessment of Intrinsic Impurity Behaviour in ASDEX Upgrade (2003)

Neu, R., Pugno, R., Rohde, V., Dux, R., Eich, T., Fahrbach, H.U., ...

Heat Propagation in Anisotropic Targets Irradiated by Laser Pulses (2003)

Bachmann, P., Hildebrandt, D., Sünder, D.

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...

Ion beam analysis methods in the studies of plasma facing materials in controlled fusion devices (2003)

Rubel, M., Wienhold, P., Hildebrandt, D.

Application of ion beam analysis techniques in the studies of material transport and fuel inventory in the controlled fusion devices is exemplified. Enhanced proton scattering on the carbon isotopes...

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

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

A new quasi-stationary, very high density plasma regime on the W7-AS stellarator (2002)

Jaenicke,R., Bäumel,S., Baldzuhn,J., Brakel,R., Burhenn,R., Ehmler,H., ...

Stellarators have the intrinsic property of steady state operation. However, on present-day stellarators the pulse length is usually not only limited due to technical reasons, but also by physical...

Erosion and migration of tungsten employed at the central column heat shield of ASDEX Upgrade (2002)

Krieger,K., Gong,X., Balden,M., Hildebrandt,D., Maier,H., Rohde,V., ...

In ASDEX Upgrade, tungsten was employed as plasma facing material at the central column heat shield in the plasma main chamber. The campaign averaged tungsten erosion flux was determined by measuring...

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., ...

Design and operational diagnostics of the W7-X divertor (2002)

Hildebrandt,D., Laux,M., Sachtleben,J., Boscary,J., Grote,H., ...

Overview on recent W7-AS results (2002)

Jaenicke,R., Bäumel,S., Baldzuhn,J., 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., ...

A new quasi-stationary, very high density plasma regime on the W7-AS stellarator (2002)

Jaenicke, R., Bäumel, S., Baldzuhn, J., Brakel, R., Burhenn, R., Ehmler, H., ...

Stellarators have the intrinsic property of steady state operation. However, on present-day stellarators the pulse length is usually not only limited due to technical reasons, but also by physical...

Erosion and migration of tungsten employed at the central column heat shield of ASDEX Upgrade (2002)

Krieger, K., Gong, X., Balden, M., Hildebrandt, D., Maier, H., Rohde, V., ...

In ASDEX Upgrade, tungsten was employed as plasma facing material at the central column heat shield in the plasma main chamber. The campaign averaged tungsten erosion flux was determined by measuring...

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...

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., ...

Design and operational diagnostics of the W7-X divertor (2002)

Hildebrandt, D., Laux, M., Sachtleben, J., Boscary, J., Grote, H., ...

Overview on recent W7-AS results (2002)

Jaenicke, R., Bäumel, S., Baldzuhn, J., 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., ...

Edge transport barrier formation and ELM phenomenology in the W7-AS stellarator (2001)

Grigull,P., Hirsch,M., Baldzuhn,J., Ehmler,H., Gadelmeier,F., Giannone,L., ...