Commissioning and first results of the 174 GHz collective Thomson scattering diagnostic at Wendelstein 7-X
Moseev, D.; Ponomarenko, S.; Laqua, H. P.; Stange, T.; Nielsen, S. K.; Braune, H.; Gantenbein, G. 1; Illy, S. 1; Jelonnek, J. 1; Kasparek, W.; Kuleshov, A.; Krier, L.
1; Lechte, C.; Marsen, S.; Nishiura, M.; Plaum, B.; Ragona, R.; Ruess, T.
1; Salewski, M.;
1; Lechte, C.; Marsen, S.; Nishiura, M.; Plaum, B.; Ragona, R.; Ruess, T.
1; Salewski, M.; Abstract (englisch):
Collective Thomson Scattering (CTS) diagnostics measure the scattering spectrum of monochromatic incident radiation off collective fluctuations in the plasma. In this contribution, we present the first results from the upgraded CTS diagnostic at Wendelstein 7-X (W7-X) operating in the frequency range between 172 and 176 GHz. This frequency range allows for minimization of noise originating from the electron cyclotron emission in the plasma. Consequently, the good signal-to-noise ratio allows measurements of fast ions or bulk plasma parameters with higher temporal resolution compared with the previously used 140 GHz system.
| Zugehörige Institution(en) am KIT | Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM) |
| Publikationstyp | Zeitschriftenaufsatz |
| Publikationsdatum | 26.03.2024 |
| Sprache | Englisch |
| Identifikator | ISSN: 1748-0221 KITopen-ID: 1000169714 |
| HGF-Programm | 31.13.02 (POF IV, LK 01) Plasma Heating & Current Drive Systems |
| Erschienen in | Journal of Instrumentation |
| Verlag | Institute of Physics Publishing Ltd (IOP Publishing Ltd) |
| Band | 19 |
| Heft | 03 |
| Seiten | Art.-Nr. C03056 |
| Projektinformation | EUROfusion (EU, EU 9. RP, 101052200) |
| Bemerkung zur Veröffentlichung | 20th International Symposium on Laser-Aided Plasma Diagnostics, Kyoto, 10th–14th September 2023 |
| Schlagwörter | Microwave radiometers; Microwave Antennas |
| Nachgewiesen in | Dimensions Web of Science Scopus |
| Globale Ziele für nachhaltige Entwicklung |