The first observation of the hot ion mode at the Globus-M2 spherical tokamak
Г. С. Курскиев, I. V. Miroshnikov, Н.В. Сахаров, В. К. Гусев, Yu. V. Petrov, V.B. Minaev, И. М. Балаченков, Н. Н. Бахарев, Ф. В. Чернышев, V.Yu. Goryainov, A. A. Kavin, Н. А. Хромов, E.O. Kiselev, S. V. Krikunov, K.M. Lobanov, A. D. Melnik, A. N. Novokhatskii, Sergey V. Filippov, N. S. Zhiltsov, A. B. Mineev, Е. Е. Мухин, М. И. Патров, А. В. Петров, А. М. Пономаренко, В. В. Солоха, K.D. Shulyatiev, П. Б. Щеголев, O. M. Skrekel, A. Yu. Telnova, E. E. Tkachenko, E. A. Tukhmeneva, В. А. Токарев, S. Yu. Tolstyakov, В. И. Варфоломеев, A. V. Voronin, A. Yu. Yashin, V. A. Solovey, E.G. Zhilin
Abstract
Abstract Hot ion mode was recently achieved at the Globus-M2 spherical tokamak when the toroidal magnetic field was as high as 0.9 T and plasma current 0.35 MA. The injection of two neutral beams with a total power of 0.7 MW and an energy of 30 keV into a plasma with major radius 0.36 m and minor radius 0.22 m (aspect ratio 1.6) made it possible to heat the plasma ions up to 4 keV, while electron density in the plasma center was as high as 8 × 10 19 m −3 . The achievement of high temperatures became possible due to the good thermal insulation of the plasma.