Abstract
The efficiencies of the fueling system in the KSTAR have been studied for the 2013 experimental results. The absolute amount of injected fuel or deuterium has been calibrated in advance of the main plasma experiments. This includes the primary actuator of fueling, i.e., gas puffing (GP) with piezoelectric valves located on mid-plane, and supersonic molecular beam injector (SMBI). In addition, neutral beam injectors (NBIs) and their base facility chamber also contribute to the amount of fuel injection whenever they are operated. Low fueling efficiency combined with particle loss due to wall retention essentially results in poor performance of density feedback control magnetic fusion devices such as the KSTAR.
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Juhn, J..W., Hahn, S.H., Hong, S.H. et al. Particle balance study for the fueling efficiency in KSTAR experiments 2013. Journal of the Korean Physical Society 65, 1304–1311 (2014). https://doi.org/10.3938/jkps.65.1304
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DOI: https://doi.org/10.3938/jkps.65.1304