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

doi:10.1063/1.1779611

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

Research output: Contribution to journal › Conference article › Research › peer-review

Abstract

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.

Original language	English
Journal	Review of Scientific Instruments
Volume	75
Issue number	10
Pages (from-to)	3634-3636
ISSN	0034-6748
DOIs	https://doi.org/10.1063/1.1779611
Publication status	Published - 2004
Event	15. Topical conference on high-temperature plasma diagnostics - San Diego, CA, United States Duration: 19 Apr 2004 → 22 Apr 2004

Conference

Conference	15. Topical conference on high-temperature plasma diagnostics
Country/Territory	United States
City	San Diego, CA
Period	19/04/2004 → 22/04/2004

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title = "Fast ion millimeter wave collective Thomson scattering diagnostics on TEXTOR and ASDEX upgrades",

abstract = "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.",

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year = "2004",

doi = "10.1063/1.1779611",

language = "English",

volume = "75",

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journal = "Review of Scientific Instruments",

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T1 - Fast ion millimeter wave collective Thomson scattering diagnostics on TEXTOR and ASDEX upgrades

AU - Michelsen, S.

AU - Korsholm, Søren Bang

AU - Bindslev, H.

AU - Meo, F.

AU - Michelsen, Poul

AU - Tsakadze, E.L.

AU - Egedal, J.

AU - Woskov, P.

AU - Hoekzema, J.A.

AU - Leuterer, F.

AU - Westerhof, E.

PY - 2004

Y1 - 2004

N2 - 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.

AB - 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.

KW - 2-E tekno

U2 - 10.1063/1.1779611

DO - 10.1063/1.1779611

M3 - Conference article

SN - 0034-6748

VL - 75

SP - 3634

EP - 3636

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 10

T2 - 15. Topical conference on high-temperature plasma diagnostics

Y2 - 19 April 2004 through 22 April 2004

ER -

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

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