| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2014: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2013: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
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| Outline of Final Research Achievements |
Reduction of the heat flux to plasma facing components (PFC) is the most critical issue for the realization of fusion power plant. Plasma detachment is thought to be one of the most promising methods to reduce the heat load onto the PFC. We have investigated the dependence of the property of the plasma detachment on the magnetic structure by using a linear plasma device. In magnetically contracting plasmas toward the PFC, plasma density goes up along the magnetic filed, leading to the enhancement of the volumetric plasma recombination. Therefore, the magnetically contracting plasma has an advantage for the formation of plasma detachment. It is also found that the variation of magnetic connection length leads to the transition from attached plasma to detached one. It can be concluded that control of magnetic structure including connection length and its gradient is the effective method to control plasma detachment.
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