Fast ion millimeter wave collective Thomson scattering diagnostics on TEXTOR and ASDEX upgrades

S. Michelsen, Søren Bang Korsholm, H. Bindslev, F. Meo, Poul Michelsen, E.L. Tsakadze, J. Egedal, P. Woskov, J.A. Hoekzema, F. Leuterer, E. Westerhof

Publikation: Bidrag til tidsskriftKonferenceartikelForskningpeer review

Abstrakt

Collective Thomson scattering (CTS) diagnostic systems for measuring fast ions in TEXTOR and ASDEX Upgrade are described in this article. Both systems use millimeter waves generated by gyrotrons as probing radiation and the scattered radiation is detected with heterodyne receivers having 40 spectral channels at TEXTOR and 50 spectral channels at ASDEX Upgrade. The antenna patterns of probe and receiver, both steerable, determine size and location of the measuring volume, and the direction of the resolved fast ion velocity. With overmoded transmission lines, consisting of waveguides and quasioptical mirrors, the antenna patterns depend on the alignment of the entire transmission line. Alignment is aided by visible laser beams relayed by small optical mirrors, inserted in the quasioptical mirrors. (C) 2004 American Institute of Physics.
OriginalsprogEngelsk
TidsskriftReview of Scientific Instruments
Vol/bind75
Udgave nummer10
Sider (fra-til)3634-3636
ISSN0034-6748
DOI
StatusUdgivet - 2004
Udgivet eksterntJa
Begivenhed15. Topical conference on high-temperature plasma diagnostics - San Diego, CA, USA
Varighed: 19. apr. 200422. apr. 2004

Konference

Konference15. Topical conference on high-temperature plasma diagnostics
LandUSA
BySan Diego, CA
Periode19/04/200422/04/2004

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