| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
As it is difficult to set the central solenoid (CS) in a spherical tokamak due to limited space, it is necessary to start-up the plasma current without CS. We propose to use an iron core transformer to start-up the plasma current using the outer vertical field coil without CS. The plasma current start-up experiments have been conducted in STOR-M iron core tokamak after removing the CS.
It was successfully demonstrated that the plasma current start-up can be done by the outer vertical field coil without CS. Although this iron core transformer inevitably saturates, the plasma can be controlled during iron core saturation phase. These two experiments were the first demonstrations in the world.
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