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  Mirror development for the 140 GHz ECRH system of the stellarator W7-X

Hailer, H., Dammertz, G., Erckmann, V., Gantenbein, G., Hollmann, F., Kasparek, W., et al. (2003). Mirror development for the 140 GHz ECRH system of the stellarator W7-X. Fusion Engineering and Design, 66-68, 639-644. doi:10.1016/S0920-3796(03)00264-3.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-3128-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-315C-8
Genre: Journal Article

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 Creators:
Hailer, H.1, Author
Dammertz, G.1, Author
Erckmann, V.2, Author              
Gantenbein, G.1, Author
Hollmann, F.3, Author              
Kasparek, W.1, Author
Leonhardt, W.1, Author
Schmid, M.1, Author
Schüller, P. G.1, Author
Thumm, M.1, Author
Weissgerber, M.4, 5, Author              
Affiliations:
1Universität Stuttgart, Institut für Plasmaforschung, Pfaffenwaldring 31, D-70569, Stuttgart, Germany; Forschungszentrum Karlsruhe, Association Euratom-FZK, IHM, Postfach 3640, D-76021, Karlsruhe, Germany, ou_persistent22              
2W7-X: Physics (PH), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856305              
3External Organizations, ou_persistent22              
4Central Technical Service (ZTE), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856299              
5Integrated Technic Center (ITZ), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856289              

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Free keywords: 22nd Symposium on Fusion Technology (SOFT 2002), Helsinki, 2002-09-09 to 2002-09-13
 Abstract: For the future stellarator W7-X in Greifswald, a powerful electron cyclotron resonance heating (ECRH) system at 140 GHz with a total RF power of 10 MW CW is under construction. The transmission of the radiation from the gyrotron hall to the machine will be realized via a fully optical system consisting of more than 160 water cooled mirrors. This paper describes the design of the mirrors and presents results of calculations of the thermo–mechanical properties. Experimental verification of the calculations showed that mirror deformation under application of a heat load equivalent to the absorbed power from a 1 MW mm-wave beam is in the tolerable range. Water cooled mirrors of the single-beam type have been used successfully during conditioning of a prototype gyrotron with a mm-wave power of 850 kW and a pulse length of up to 180 s. To test and optimize in-situ measurements of beam parameters and power of the CW ECRH system on W7-X, these mirrors are equipped with different diagnostics.

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Language(s): eng - English
 Dates: 2003
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Degree: -

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Title: Fusion Engineering and Design
  Alternative Title : Fusion Eng. Des.
Source Genre: Journal
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Publ. Info: Copyright © 2003 Elsevier B.V. All rights reserved
Pages: - Volume / Issue: 66-68 Sequence Number: - Start / End Page: 639 - 644 Identifier: -