Plasma profiles, self-organization and alfven eigenmodes studies using the HIBP diagnostic in the TJ-II stellarator

• Дата: 2023
• Автори: Krupnik, L.I., Barcala, J.M., Cappa, A., Chmyga, O.O., Dreval, M.B., Hidalgo, C., Khrebtov, S.M., Komarov, O.D., Kozachok, O.S., Martínez, J., Molinero, A., Pablos, J.L.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2023
• Назва видання: Problems of Atomic Science and Technology
• Теми: Plasma diagnostics
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/196043
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Plasma profiles, self-organization and alfven eigenmodes studies using the HIBP diagnostic in the TJ-II stellarator / L.I. Krupnik, J.M. Barcala, A. Cappa, O.O. Chmyga, M.B. Dreval, C. Hidalgo, S.M. Khrebtov, O.D. Komarov, O.S. Kozachok, J. Martínez, A. Molinero, J.L. de Pablos, and TJ-II team // Problems of Atomic Science and Technology. — 2023. — № 1. — С. 122-125. — Бібліогр.: 8 назв. — англ.

This paper reports recent experiments in the TJ-II stellarator using a dual Heavy Ion Beam probe diagnostic. The studies were focused on characterizing plasma potential profiles, investigating self-organization mechanisms and Alfven Eigenmodes (AEs). Results showed plasma equipotential measurements consistent with vacuum magnetic surfaces and the presence of zonal flows in the plasma core region. The investigation of Alfven Eigen modes showed their radial localization and poloidal asymmetries in potential and density fluctuations driven by AEs.