Temperature Modification: Yes, through NKEMOD=0,-1 and TKEMOD=0.150
Density Modification: Yes, through freezing the profile at 0.2 s
Chi Modification: No
Current to limit q(0) set: Yes, used: No
Comments:
From TRANSP 2190 it looked like fixing the density would provide some interesting results
and it certainly does. Strong shear reversal is maintained throughout the run, eventhough towards the end enough ohmic sneaks
in on axis to bring q(0) to 1. The run is primarily LH current supported. An interesting next step would be to switch from running in
a constant current regime to one where the ohmic transformer is open. The LH current really jumps around in this case. It can't be the
density, but now possibly the temperature plays a role. This effect seems only noticable once the density is calm. This result makes
a cryopump look like a very good option.
For more information see the input namelist.
The image below plots the total current vs time. Overplotted is the temperature taken at a region near where there
is a lot of activity, r/a=0.275. This shows no definite correlation with the temperature.
Legend:
Total Current: White
Lower Hybrid: Red
Ohmic Current: Green
Bootstrap Current: Blue
Electron Temperature: Cyan
