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Your search keyword '"Wilde F."' showing total 28 results
Start Over Author "Wilde F." Publication Type Conference Materials
28 results on '"Wilde F."'

15. ECRH at W7-X - Concurrent Operation of 10 Gyrotrons

Author

Braune, H., primary, Brunner, K.J., additional, Laqua, H. P., additional, Marsen, S., additional, Moseev, D., additional, Noke, F., additional, Purps, F., additional, Schneider, N., additional, Schulz, T., additional, Stange, T., additional, Uhren, P., additional, and Wilde, F., additional

Published
2018
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16. Developments of fusion gyrotrons for W7-X, ITER and EU DEMO: Ongoing activities and future plans of KIT

Author

Jelonnek, J., primary, Aiello, G., additional, Avramidis, K., additional, Gantenbein, G., additional, Grossetti, G., additional, Illy, S., additional, Ioannidis, Z. C., additional, Jin, J., additional, Kalaria, P., additional, Marek, A., additional, Pagonakis, I. G., additional, Rzesnicki, T., additional, Ruess, S., additional, Ruess, T., additional, Scherer, T., additional, Schmid, M., additional, Strauss, D., additional, Thumm, M., additional, Wilde, F., additional, Wu, C., additional, and Zein, A., additional

Published
2017
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22. Distribution of oil in sea ice: Laboratory Experiments for 3-dimensional microCT investigations.

Author

Salomon, M. L., Maus, S., Arntsen, M., O'Sadnick, M., Petrich, C., and Wilde, F.

Abstract

With increasing exploration and operations in the Arctic, resulting in a growing risk for oil spills, a sound understanding of fate, detection and impact of hydrocarbons in sea ice is vital for planning and spill response. Sea ice contains pores and channels forming a network of effective porosity. During the growth season (October-March) oil becomes entrained and encapsulated in the ice quickly and remains trapped in the ice as a relatively static and discrete layer. With increasing ice temperature in spring, the interconnectivity of the pores increases and gives rise to movement of oil to the surface. To enhance understanding of oil distribution in sea ice, laboratory experiments of oil in ice were conducted. The ice was imaged with 3-D synchrotron Xray micro-tomography (SRμCT), a non-destructive method ideally to obtain accurate measurements. An understanding of these processes is a prerequisite for optimal timing of oil spill clean-up as well as the interpretation of remote sensing data. This paper describes the measurement process and preliminary results in the context of future research opportunities to explore these applications, ranging from small in-situ experiments (5-10 cm)-, to ship tank experiments and field experiments. [ABSTRACT FROM AUTHOR]

Published
2016

23. Layout and first results of the nanotomography endstation at the P05 beamline at PETRA III.

Author

Ogurreck, M., Greving, I., Marschall, F., Vogt, H., Last, A., do Rosario, J. J., Leib, E. W., Beckmann, F., Wilde, F., and Müller, M.

Subjects
TOMOGRAPHY, NANOTECHNOLOGY, PIXELS, PRISMS, OPTICAL devices
Abstract

The Helmholtz-Zentrum Geesthacht operates the P05 Imaging Beamline at the DESY storage ring PETRA III. This beamline is dedicated to micro- and nanotomography with two endstations. This paper will present the nanotomography endstation layout and first results obtained from commissioning and test experiments. First tests have been performed with CRLs as X-ray objectives and newly developed rolled X-ray prism lenses as condenser optics. This setup allows a resolution of 100nm half period with an effective detector pixel size of 15nm. A first tomograph of a photonic glass sample was measured in early 2014. [ABSTRACT FROM AUTHOR]

Published
2015
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27. 2018 Status on KIT Gyrotron Activities.

Author

Avramidis, K., Gantenbein, G., Illy, S., Ioannidis, Z. C., Jin, J., Kalaria, P., Marek, A., Pagonakis, I. Gr., Rzesnicki, T., Ruess, T., Schmid, M., Wu, C., Zein, A., Jelonnek, John, Ruess, S., Thumm, M., Wilde, F., Aiello, G., Grossetti, G., and Scherer, T.

Subjects
ELECTRON cyclotron resonance heating, GYROTRONS, CURRENT-drive heating, NUCLEAR fusion, MILLIMETER waves, SUBMILLIMETER waves
Published
2018
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28. Concurrent operation of 10 gyrotrons at W7-X - experience and improvement opportunities.

Author

Braune, H., Brunner, K. J., Laqua, H. P., Marsen, S., Moseev, D., Noke, F., Purps, F., Schneider, N., Schulz, T., Stange, T., Uhren, P., and Wilde, F.

Subjects
ELECTRON cyclotron resonance heating, GYROTRONS, STELLARATORS, PLASMA confinement, CURRENT-drive heating
Abstract

At the stellarator Wendelstein 7-X (W7-X) Electron Cyclotron Resonance Heating (ECRH) is the main heating system for steady-state operation and was the only available heating system during the operation phase OP1.2a in 2017. The ECRH, equipped with 10 operational 140 GHz gyrotrons [1], was used for different tasks at W7-X such as wall conditioning, controlled plasma start-up from the neutral gas up to steady state plasma control and different heating scenarios such as X2-mode and O2-mode heating as well as current drive (ECCD). The operational experiences and improvement opportunities of the ECRH plant will be discussed. [ABSTRACT FROM AUTHOR]

Published
2018
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