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 |
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Journal | Review of Scientific Instruments |
Volume | 83 |
Pages (from-to) | 10E337 |
Number of pages | 3 |
ISSN | 0034-6748 |
DOIs | |
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 |
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Number | 19 |
Country/Territory | United States |
City | Monterey |
Period | 06/05/2012 → 12/05/2012 |