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Your search keyword '"Beidler, C. D."' showing total 3 results
Start Over Author "Beidler, C. D." Publisher edp sciences
3 results on '"Beidler, C. D."'

1. ECRH and ECCD scenarios for W7-X

Author

Laqua H.P., Helander P., Geiger J., Erckmann V., Beidler C. D., Marushchenko N. B., Maassberg H., and Turkin Y.

Subjects
Physics, QC1-999
Abstract

The main ECRH scenarios for the W7-X Stellarator are described. Both X2 (low and moderate densities) and O2 scenarios (high density) have been studied. Since O2 scenario cannot be realized without pre-heating, transition from X2 to O2 scenarios has been discussed. Due to a lack of Ohmic transformer, only ECCD is available for compensating the bootstrap current and for controlling the edge rotational transform value. The efficiency of ECCD for all main scenarios has been estimated. All simulations have been performed by a 1D transport code coupled self-consistently with ray-tracing code.

Published
2012
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2. ECRH scenarios with selective heating of trapped/passing electrons in the W7-X Stellarator.

Author

Marushchenko, N. B., Beidler, C. D., Erckmann, V., Geiger, J., Helander, P., Laqua, H. P., Maassberg, H., and Turkin, Y.

Subjects
*STELLARATORS, *RADIO frequency, *MAGNETIC fields, *ION beams, *ELECTRON research
Abstract

Using specific features of the magnetic equilibrium in the W7-X stellarator, the ECRH scenarios with combined X2 and X3 modes are discussed. The RF beams for operation with X2 and X3 modes need to be launched from low- and, via the remote steering launcher, high-field-side, respectivaly, in the different crosssections of the device where the maximum and minimum of the magnetic field located. The aim is to explore the possibility of selective heating of the different classes of electrons, passing and trapped, by changing direction of the beam for X3 or switching between the beams for X2 and X3 launched from the different ports. The numerical predictions for this kind of experiments in W7-X are performed by coupled transport and ray tracing codes. [ABSTRACT FROM AUTHOR]

Published
2015
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3. ECRH and ECCD scenarios for W7-X

Author

Marushchenko, N. B., primary, Beidler, C. D., additional, Erckmann, V., additional, Geiger, J., additional, Helander, P., additional, Laqua, H.P., additional, Maassberg, H., additional, and Turkin, Y., additional

Published
2012
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