TRANSP 2280


Run Information

Run Time: 0.14-1.0s
ICRF Module: TORIC (New nl Controls)
ICRF Power: 3MW @80MHz (Simulated)
ICRF Duration: 0.14-1.0s
LH Module: LSC
LH Power: 2.7MW @n0=2.75,4.0
LH Duration: 0.15-1.0s
Density Profile: Artificial Barrier r/a=0.5, d=5cm
Chi Modification: Yes, NKEMOD = 0, -2, TKEMOD = 0.2
NLXEIN=.T, XKEMIN=1.e3, XKEMAX=3.e4, NKIMODA= 6, 0	    
TKIMOD= 0.2

Noteworthy Switches:  NZONES=20, LEVGEO=6(VMEC6),
QLIM0=15.0, NBOOSM=2, NJSMBOOT=2, NJSMLH=4,
NRAYSLH=50,hLH=0.002,DTMAXG=0.002, NLTIPRO=.F,
NLTI2=.F

Comments:

This run is a first attempt to create a temperature barrier by inputting chi profiles for ions and electrons. Things appear to work quite well. Results are not wild at all. It seems possible to create a barrier by tweaking the chi's. The average bootstrap fraction is 0.28 and the peak value is 34%. This run has great potential. For more information about the run see the input namelist.


The image below plots the total current vs time.

Integrated Current with Central Density
Legend: 
Total Current: 		White
Lower Hybrid: 		Red
Ohmic Current: 		Green
Bootstrap Current: 	Blue

The figure below shows the actual power spectrum from the TRANSP output.
Power Spectrum

After t=0.2s the chi profiles for both electrons and ions are set as follows.
Chi's