Identification of the primary processes that lead to the drop in divertor target ion current at detachment in TCV
Using SOLPS-ITER, we model a TCV conventional divertor discharge density ramp to understand the role of various processes in the loss of target ion current. We find that recombination is not a strong contributor to the rollover of the target ion current at detachment. In contrast, the divertor ion source appears to play a central role in magnitude (the source of most of the ion target current) and time, apparently dropping during the density ramps as a result of a drop in power available for ionization.
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Fil, A., Dudson, B., Lipschultz, B., Moulton, D., Verhaegh, K., Fevrier, O., & Wensing, M. (2018). Identification of the primary processes that lead to the drop in divertor target ion current at detachment in TCV. Contributions to Plasma Physics, 58(6-8), 746–750. https://doi.org/10.1002/ctpp.201700171
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WOS:000443937100046
2018-07-01
58
6-8
746
750
16th International Workshop on Plasma Edge Theory in Fusion Devices (PET), Marseille, FRANCE, Sep 27-29, 2017
REVIEWED
EPFL