Elevation angle alignment of quasi optical receiver mirrors of collective Thomson scattering diagnostic by sawtooth measurements
Artikel i vetenskaplig tidskrift, 2012
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 degrees was found with an accuracy of 0.25 degrees.
radiation
ion temperature
Författare
D. Moseev
Stichting voor Fundamenteel Onderzoek der Materie
Max-Planck-Gesellschaft
F. Meo
Danmarks Tekniske Universitet (DTU)
S. B. Korsholm
Danmarks Tekniske Universitet (DTU)
H. Bindslev
Aarhus Universitet
Vedran Furtula
Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik
M. Kantor
Forschungszentrum Jülich
Russian Academy of Sciences
Stichting voor Fundamenteel Onderzoek der Materie
F. Leipold
Danmarks Tekniske Universitet (DTU)
P. K. Michelsen
Danmarks Tekniske Universitet (DTU)
S. K. Nielsen
Danmarks Tekniske Universitet (DTU)
M. Salewski
Danmarks Tekniske Universitet (DTU)
M. Stejner
Danmarks Tekniske Universitet (DTU)
Review of Scientific Instruments
0034-6748 (ISSN) 1089-7623 (eISSN)
Vol. 83 10 10E337Ämneskategorier
Fysik
DOI
10.1063/1.4737387