Elevation angle alignment of quasi optical receiver mirrors of collective Thomson scattering diagnostic by sawtooth measurements

D. Moseev; Fernando Meo; Søren Bang Korsholm; Henrik Bindslev; V. Furtula; M. Kantor; Frank Leipold; Poul Michelsen; Stefan Kragh Nielsen; Mirko Salewski; Morten Stejner Pedersen

doi:10.1063/1.4737387

Elevation angle alignment of quasi optical receiver mirrors of collective Thomson scattering diagnostic by sawtooth measurements

D. Moseev, Fernando Meo, Søren Bang Korsholm, Henrik Bindslev, V. Furtula, M. Kantor, Frank Leipold, Poul Michelsen, Stefan Kragh Nielsen, Mirko Salewski, Morten Stejner Pedersen

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Abstract

Localized measurements of the fast ion velocity distribution function and the plasma composition measurements are of significant interest for the fusion community. Collective Thomson scattering (CTS) diagnostics allow such measurements with spatial and temporal resolution. Localized measurements require a good alignment of the optical path in the transmission line. Monitoring the alignment during the experiment greatly benefits the confidence in the CTS measurements. An in situ technique for the assessment of the elevation angle alignment of the receiver is developed. Using the CTS diagnostic on TEXTOR without a source of probing radiation in discharges with sawtooth oscillations, an elevation angle misalignment of 0.9◦ was found with an accuracy of 0.25◦. © 2012 American Institute of Physics

Original language	English
Journal	Review of Scientific Instruments
Volume	83
Pages (from-to)	10E337
Number of pages	3
ISSN	0034-6748
DOIs	https://doi.org/10.1063/1.4737387
Publication status	Published - 2012
Event	19th Topical Conference High-Temperature Plasma Diagnostics - Monterey, United States Duration: 6 May 2012 → 12 May 2012 Conference number: 19

Conference

Conference	19th Topical Conference High-Temperature Plasma Diagnostics
Number	19
Country/Territory	United States
City	Monterey
Period	06/05/2012 → 12/05/2012

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Moseev, D., Meo, F., Korsholm, S. B., Bindslev, H., Furtula, V., Kantor, M., Leipold, F., Michelsen, P., Nielsen, S. K., Salewski, M., & Stejner Pedersen, M. (2012). Elevation angle alignment of quasi optical receiver mirrors of collective Thomson scattering diagnostic by sawtooth measurements. Review of Scientific Instruments, 83, 10E337. https://doi.org/10.1063/1.4737387

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title = "Elevation angle alignment of quasi optical receiver mirrors of collective Thomson scattering diagnostic by sawtooth measurements",

abstract = "Localized measurements of the fast ion velocity distribution function and the plasma composition measurements are of significant interest for the fusion community. Collective Thomson scattering (CTS) diagnostics allow such measurements with spatial and temporal resolution. Localized measurements require a good alignment of the optical path in the transmission line. Monitoring the alignment during the experiment greatly benefits the confidence in the CTS measurements. An in situ technique for the assessment of the elevation angle alignment of the receiver is developed. Using the CTS diagnostic on TEXTOR without a source of probing radiation in discharges with sawtooth oscillations, an elevation angle misalignment of 0.9◦ was found with an accuracy of 0.25◦. {\textcopyright} 2012 American Institute of Physics",

author = "D. Moseev and Fernando Meo and Korsholm, \{S{\o}ren Bang\} and Henrik Bindslev and V. Furtula and M. Kantor and Frank Leipold and Poul Michelsen and Nielsen, \{Stefan Kragh\} and Mirko Salewski and \{Stejner Pedersen\}, Morten",

year = "2012",

doi = "10.1063/1.4737387",

language = "English",

volume = "83",

pages = "10E337",

journal = "Review of Scientific Instruments",

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publisher = "American Institute of Physics",

note = "19th Topical Conference High-Temperature Plasma Diagnostics, HTPD 2012 ; Conference date: 06-05-2012 Through 12-05-2012",

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T1 - Elevation angle alignment of quasi optical receiver mirrors of collective Thomson scattering diagnostic by sawtooth measurements

AU - Moseev, D.

AU - Meo, Fernando

AU - Korsholm, Søren Bang

AU - Bindslev, Henrik

AU - Furtula, V.

AU - Kantor, M.

AU - Leipold, Frank

AU - Michelsen, Poul

AU - Nielsen, Stefan Kragh

AU - Salewski, Mirko

AU - Stejner Pedersen, Morten

N1 - Conference code: 19

PY - 2012

Y1 - 2012

N2 - Localized measurements of the fast ion velocity distribution function and the plasma composition measurements are of significant interest for the fusion community. Collective Thomson scattering (CTS) diagnostics allow such measurements with spatial and temporal resolution. Localized measurements require a good alignment of the optical path in the transmission line. Monitoring the alignment during the experiment greatly benefits the confidence in the CTS measurements. An in situ technique for the assessment of the elevation angle alignment of the receiver is developed. Using the CTS diagnostic on TEXTOR without a source of probing radiation in discharges with sawtooth oscillations, an elevation angle misalignment of 0.9◦ was found with an accuracy of 0.25◦. © 2012 American Institute of Physics

AB - Localized measurements of the fast ion velocity distribution function and the plasma composition measurements are of significant interest for the fusion community. Collective Thomson scattering (CTS) diagnostics allow such measurements with spatial and temporal resolution. Localized measurements require a good alignment of the optical path in the transmission line. Monitoring the alignment during the experiment greatly benefits the confidence in the CTS measurements. An in situ technique for the assessment of the elevation angle alignment of the receiver is developed. Using the CTS diagnostic on TEXTOR without a source of probing radiation in discharges with sawtooth oscillations, an elevation angle misalignment of 0.9◦ was found with an accuracy of 0.25◦. © 2012 American Institute of Physics

U2 - 10.1063/1.4737387

DO - 10.1063/1.4737387

M3 - Conference article

C2 - 23126995

SN - 0034-6748

VL - 83

SP - 10E337

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

T2 - 19th Topical Conference High-Temperature Plasma Diagnostics

Y2 - 6 May 2012 through 12 May 2012

ER -

Elevation angle alignment of quasi optical receiver mirrors of collective Thomson scattering diagnostic by sawtooth measurements

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