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Report No.

Study of fueling scenario and particle balance in a fusion reactor

Takenaga, Hidenobu; Kawashima, Hisato; Nishio, Satoshi; Tobita, Kenji

A fuelling scenario in a fusion reactor has been investigated, where tritium is fuelled in the main plasma and deuterium is fuelled in both the main plasma and the edge plasma. The tritium fuelling in the main plasma minimizes the tritium fuelling rate necessary for sustaining the high tritium density in the main plasma, resulting in the minimum tritium recycling level at the fixed pumping fraction. The deuterium fuelling in the main plasma sustains the high deuterium density in the main plasma and the deuterium fuelling in the edge plasma enhances the deuterium recycling level for reducing the divertor temperature. Based on this scenario, particle balance was quantitatively investigated using the SlimCS design parameters at 2.95 GW fusion output with consideration of confinement times separately defined for the particles fuelled in the main plasma and the edge plasma.



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Category:Nuclear Science & Technology



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