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Information × Registration Number 0220U102146, 0119U101343 , R & D reports Title Studies in the torsatron U-2M and U-3M of the structure of the plasma cord, MHD plasma activity and HF methods of creating and heating the plasma. popup.stage_title Head Moiseienko Volodymyr Ye., Registration Date 10-03-2020 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description2 A high-frequency discharge study was conducted for the preparation of internal vacuum surfaces using an improved antenna. The new T-shaped antenna can be used with continuous cleaning modes in toroidal magnetic traps. Mode without a magnetic field showed the presence of plasma along the whole toroidal vacuum chamber, but its performance significantly decreases with distance. High-frequency refraction mode in a weak magnetic field can reduce the number of monolayers to several units. The efficiency of this mode can be compared with the efficiency of impulse treatment lines. It is shown that it is possible to enter up to 3 kW of plasma power with a duration of more than 200 minutes. Plasma discharges with the help of a new T-shaped antenna are implemented as a regular procedure for the installation of Hurricane-2M. Also, a new (dipole) antenna was constructed, manufactured and installed on the U-2M. The first experimental results of this antenna were obtained in the mode of high frequency cleaning in a weak magnetic field. Subsequent experiments are aimed at developing technologies for high-frequency cleaning of surfaces, which could be used on the largest in the world Weldelstein-7ex. As part of this phase of the project, a triple probe collection and processing system was developed and manufactured. Experimental verification and validation of this system have been carried out. With the help of the triple probe method and the data collection and processing system, measurements of time evolution and profiles of density and temperature of electrons, plasma potential were made. The obtained data were compared with the data of the double Langmuir probe. This diagnostic can be used as the standard method for plasma diagnostics at the Hurricane-2M installation.  Product Description popup.authors GLAZUNOV Gennady P. GRIGORIEVA Lyudmila I. DREVAL Mykola B KOVTUN Yuriy V. KOZULYA Mykhaylo M. KULIK Yulia S. MAZNICHENKO Sergey M. MOISEENKO Vladimir E PAVLICHENKO Rostislav O. ROMANOV Vladislav S. SUSKO Evgeny V. TARASOV Igor K popup.nrat_date 2020-04-02 Close