98
edits
TJ-II: Validation of neutral beam current drive: Difference between revisions
TJ-II: Validation of neutral beam current drive (view source)
Revision as of 16:02, 21 January 2022
, 21 January 2022→Description of the activity
| Line 20: | Line 20: | ||
However, since both bootstrap and NBCD are contributing to the toroidal plasma current, the validation of NBCD needs first a numerical computation of the bootstrap contribution, ideally with a validated tool. | However, since both bootstrap and NBCD are contributing to the toroidal plasma current, the validation of NBCD needs first a numerical computation of the bootstrap contribution, ideally with a validated tool. | ||
Validating bootstrap current is a long standing issue in TJ-II ECRH plasmas. Experimental proposals devoted to this task have been unsuccessful because of the difficulties encountered to achieve pulses long enough to observe current stabilization. Two | Validating bootstrap current is a long standing issue in TJ-II ECRH plasmas. Experimental proposals devoted to this task have been unsuccessful because of the difficulties encountered to achieve pulses long enough to observe current stabilization. Two days are requested to carry out this proposal. In its first part, and following the procedure described in http://fusionwiki.ciemat.es/wiki/TJ-II:Validation_of_bootstrap_predictions (Velasco et al.), we will | ||
carry out an attempt to achieve long ECRH pulses, looking for a current stabilization phase, in order to fulfill as best the possible the goals detailed in the proposal by Velasco et al. If proved unfeasible, we will switch to NBI plasma and carry out the rest of the experiments. | carry out an attempt to achieve long ECRH pulses, looking for a current stabilization phase, in order to fulfill as best the possible the goals detailed in the proposal by Velasco et al. If proved unfeasible, we will switch to NBI plasma and carry out the rest of the experiments. | ||