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Advancing local helicity injection for non-solenoidal tokamak startup, Bongard, M.W., Bodner, G.M., Burke, M.G., Fonck, R.J., Pachicano, J.L., Perry, J.M., Pierren, C., Reusch, J.A., Rhodes, A.T., Richner, N.J., Rodriguez Sanchez, C., Schaefer, C.E., Weberski, J.D.
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Bongard et al. (2019) studied this question.
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