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Information × Registration Number 0214U006985, 0113U006380 , R & D reports Title Development and introduction of new plasma diagnostics on the basis of multifrequency microwave scatterometry at Uragan-2M device and plasma confinment in combined magnetic configuration of stellarator with open trap popup.stage_title Head Voitsenya Vladimir Sergeevich, Доктор фізико-математичних наук Registration Date 25-04-2014 Organization National Science Center "Kharkiv Institute of Physics and Technology popup.description2 A scheme was developed by theory, which can provide to measure (for the first time) on stellarators Uragan-2M and Uragan-3M the radial profile of density of electrons and its evolution during RF discharge time, when probing plasma volume by SHF (super-high frequency) waves. This is possible due to a monosemantic dependence of plasma profile on the derivative of phase shift on probing frequency. Taking into account modern progress in a SHF technique, it was suggested to use plasma probing on several close frequencies, in such a way that the derivative of phase shift with a high accuracy is proportional to the differences of phase shifts on some frequencies. With the object of finding the optimal location of a RF antenna for plasma production and heating near a location of a magnetic field strength reduction, detail calculations of magnetic field strength distribution were provided. Three zones with different properties of charged particles confinement were singled out: stellarator zone, magnetic mirror zone, and a flying-off zone. Antenna has to be located in the flying-off zone, closely to the border of magnetic mirror zone. By the use of a self-consistent numerical model for RF plasma production and heating, the calculations were carried out of an optimal location of antenna. The results demonstrated that process of plasma production goes without problems: the flying-off zone (i.e., a zone with bad plasma confinement) is filling in with a plasma, what is necessary for passing through RF waves to the central zone of plasma column. Product Description popup.authors Барон Дем'ян Ілліч Грігорьєва Людмила Іванівна Евсюков Олександр Вікторович Козуля Михайло Михайлович Коновалов Володимир Григорович Коровін Валерій Борісович Котенко Володимир Григорович Красюк Олександр Юрійович Лозин Олексий Васильович Махов Михайло Миколайович Миронов Юрій Костінтинович Моісеенко Володимир Евгенович ОЖЕРЕЛЬЕВ Федор Іванович Пашнев Валерій Костінтинович Рижков Іван Володимирович Солодовченко Сергій Іванович СОРОКОВОЙ Едуард Леонідович Чернишенко Віктор Якович Шаповал Анатолій Миколайович Штань Анатолій Федорович popup.nrat_date 2020-04-02 Close