First measurements of line electron density in Uragan-2M plasmas via 140 GHz heterodyne interferometer
Commissioned a microwave 2 mm (140 GHz) superheterodyne interferometer, which allows to start the measurement of linear (average over the length of the chord passing through the plasma) of the electron density at the Uragan-2M torsatron. Compared with the previously used 8 mm interferometer, this di...
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| Datum: | 2017 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2017
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| Schriftenreihe: | Вопросы атомной науки и техники |
| Schlagworte: | |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/122181 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | First measurements of line electron density in Uragan-2M plasmas via 140 GHz heterodyne interferometer / R.O. Pavlichenko, N.V. Zamanov, A.E. Kulaga // Вопросы атомной науки и техники. — 2017. — № 1. — С. 257-260. — Бібліогр.: 7 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | Commissioned a microwave 2 mm (140 GHz) superheterodyne interferometer, which allows to start the measurement of linear (average over the length of the chord passing through the plasma) of the electron density at the Uragan-2M torsatron. Compared with the previously used 8 mm interferometer, this diagnosis will significantly expand the limits of measurement. It is now possible to measure the plasma density up to the 2.43∙10²⁰ m⁻³. New receiving and transmitting waveguide line provided a significant reduction in attenuation of the microwave radiation introduced into the plasma. It ensures that the value of the minimum measured density does not exceed 1.5∙10¹⁶ m⁻³. It is shown that a high signal-to-noise ratio and the temporal efficiency of the detection system allowed to measure the quasi-coherent plasma fluctuations in the range of 3…20 kHz. |
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