PPT Slide

Conclusions and Recommendations

• For the ARIES-AT equilibria with higher _N and better bootstrap

alignment, the RFCD power requirements are drastically reduced

to ~25 MW from ~80 MW in ARIES-RS.

- Only two RF systems are required (ICRF/FW and LHW).

- In this scenario, need active feedback coils to stabilize RWM.

• Low-energy NBI was considered for both off-axis CD and rotation drive

to stabilize resistive wall mode.

- More NBCD power is required than for LHCD.

- Induced rotation speed is within range for RWM stabilization.

- Off-the shelf NB technology appears sufficient.

• RECOMMENDATIONS for CD and kink stabilization, to preserve

attractiveness of ARIES-AT:

- Baseline scenario : LH off-axis CD, and active feedback coils and/or

innovative RF rotation drive for RWM stabilization

- Backup scenario : NBI off-axis CD and rotation drive

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