Conference paper · Journal article
Elevation angle alignment of quasi optical receiver mirrors of collective Thomson scattering diagnostic by sawtooth measurements
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
| Language: | English |
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| Publisher: | American Institute of Physics |
| Year: | 2012 |
| Pages: | 10E337 |
| Proceedings: | 19th Topical Conference High-Temperature Plasma Diagnostics |
| ISSN: | 10897623 and 00346748 |
| Types: | Conference paper and Journal article |
| DOI: | 10.1063/1.4737387 |
| ORCIDs: | Korsholm, Søren Bang , Leipold, Frank , Michelsen, Poul , Nielsen, Stefan Kragh , Salewski, Mirko and Stejner Pedersen, Morten |
