1. Proposal #3: Expand ITER rampdown cases
C. Kessel, PPPL
Remaining in H-mode
Keep power as high as possible, for as long as possible in rampdown
Step downs in power with H-L-H transitions
Find power where full back transition occurs, H-L
Ideally control density drop at different rates (probably not possible in H-mode)
H/L-mode combined rampdowns, varying transition time
Vary dIp/dt
Vary dn/dt
L-mode rampdowns (power to zero at end of flattop)
Explore vertical instability saturation of growth rate with rising li
Plasmas diverted for all rampdowns, kappa reduction
Explore fixed strike points, with and without good plasma match to midplane

2. Examine H-L-H “step down” in density with Ip and PICRF rampdown
ICRF drops from 4 to 2 MW

3. ITER rampdown issues: n(t) H or L-mode Vertical stability
Strike points/midplane coupling
Remain diverted to very low Ip