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Your search keyword '"Doelman, N"' showing total 2 results
Start Over Author "Doelman, N" Topic power electronics
2 results on '"Doelman, N"'

1. Status of Resonant Diplexer Development for high-power ECRH Applications.

Author

Kasparek, W., Plaum, B., Lechte, C., Filipovic, E., Erckmann, V., Grünwald, G., Hollmann, F., Maraschek, M., Michel, G., Monaco, F., Müller, S., Noke, F., Purps, F., Schubert, M., Schütz, H., Stober, J., Wagner, D., Van den Braber, R., Doelman, N., and Fritz, E.

Subjects
RESONATORS, ELECTRON cyclotron resonance sources, CYCLOTRONS, PLASMA gases, POWER electronics
Abstract

Characteristics of ring resonator diplexers for high-power ECRH are briefly reviewed. Commissioning experiments performed on ASDEX Upgrade with the diplexer Mk IIa are presented, which demonstrate slow and fast switching of the power between two launchers, and thus the capability for efficient suppression of neoclassical tearing modes and simultaneous central heating of the plasma. The development of the compact diplexer Mk IIIb is discussed, and test results are presented. Finally, an evacuated design for 170 GHz is shown. [ABSTRACT FROM AUTHOR]

Published
2012
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2. Commissioning of inline ECE system within waveguide based ECRH transmission systems on ASDEX upgrade.

Author

Bongers, W. A., Kasparek, W., Doelman, N., Van den Braber, R., Van den Brand, H., Meo, F., de Baar, M. R., Amerongen, F. J., Donné, A. J. H., Elzendoorn, B. S. Q., Erckmann, V., Goede, A. P. H., Giannone, L., Grünwald, G., Hollman, F., Kaas, G., Krijger, B., Michel, G., Lubyako, L., and Monaco, F.

Subjects
ELECTRON cyclotron resonance sources, CYCLOTRONS, WAVEGUIDES, POLARIZATION (Nuclear physics), POWER electronics
Abstract

A CW capable inline electron cyclotron emission (ECE) separation system for feedback control, featuring oversized corrugated waveguides, is commissioned on ASDEX upgrade (AUG). The system is based on a combination of a polarization independent, non-resonant, Mach-Zehnder diplexer equipped with dielectric plate beam splitters [2, 3] employed as corrugated oversized waveguide filter, and a resonant Fast Directional Switch, FADIS [4, 5, 6, 7] as ECE/ECCD separation system. This paper presents an overview of the system, the low power characterisation tests and first high power commissioning on AUG. [ABSTRACT FROM AUTHOR]

Published
2012
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