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Information × Registration Number 0223U000568, 0121U109316 , R & D reports Title Investigation of high-frequency generation and heating of plasma, combined discharges and discharges of direct current for treatment of walls of vacuum chambers and advanced methods of diagnostics of plasma and condition of vacuum surfaces. popup.stage_title Head Moiseenko Vladimir Ev., Кандидат фізико-математичних наук Registration Date 12-01-2023 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description2 A study of plasma creation using high-frequency (HF) discharges in the range of ion-cyclotron frequencies on U-2M in a H2+He mixture at a controlled hydrogen concentration was conducted. An antenna similar to the W7-X antenna operated with monopole phasing with a supplied high-frequency power of ~ 100 kW. The calculations of the trajectory of microwave rays confirmed the possibility of using the peripheral part of the radiation of the horn antenna to obtain information about the plasma under study. This makes it possible to further use refraction-based microwave diagnostic methods at installations for magnetic confinement of plasma, primarily in the U-2M stellarator, where it is not possible to change the angle of inclination of the horn antennas. A saw-tooth high-voltage voltage generator up to 4 kV with a frequency of (40 -:- 200) hertz was designed and created for scanning the energy of the ion energy analyzer. This makes it possible to measure the ion energy distribution based on the data of the recharging neutral flows in the range up to 18 keV at the Uragan-2M installation. The study of the scenarios of treatment of internal vacuum surfaces with a high-frequency discharge plasma in a low magnetic field was carried out.  Product Description popup.authors GLAZUNOV Gennady P. DREVALʹ Mykola B Kovtun Yurii Viktorovych KOZULYA Mykhaylo М. KRASYUK Oleksandr Yu KULIK Yulia S. LYSTOPAD Viktor M. MAZNICHENKO Sergey M. MARTSENYUK Yuriy P. MOISEENKO Volodymyr E Syusko Yevhen V. popup.nrat_date 2023-01-12 Close