Первое Применение Диагностики Плазмы Пучком Тяжелых Ионов Для Измерения Потенциала Плазмы При Ко-Инжекции Высокоэнергичных Нейтральных Атомов В Токамак ТУМАН-3М

Heavy ion beam probe (HIBP) diagnostics on TUMAN-3M tokamak was updated to provide measurements in the regime with neutral beam injection co-directed with plasma current (co-NBI). By means of HIBP plasma potential measurements in the center of plasma were carried out. Plasma potential evolution in the discharge with L-H transition (transition to improved confinement mode) is in good agreement with the concept of negative radial electric field generation during the formation of transport barrier.