PPT Slide

RF Current Drive on “AT Plasma”

• Current drive is required in two locations :

- On-axis: provides bootstrap seed and controls q(0)

- Off-axis: controls qmin location and enhances _ limit.

• Radio frequency systems are used for integrability to fusion power core.

• RF power launch location

and spectra are selected for

maximum CD efficiency

and profile alignment.

• For an AT plasma with

R=5.5 m, A=4, I=19 MA,

Bo=8 T, _N=6.0, the CD

requirements are:

- On-axis: ICRF @ 95 MHz,

12 MW, I/P = 0.02 A/W

- Off-axis: LHW @ 3.6 GHz,

50 MW, I/P = 0.02 A/W

AT Plasma:

_N = 6.0, IBS/I = 0.94

= 16 keV, Zeff = 1.8

_B = 6.32

On-axis

CD:

ICRF/FW

Off-axis

CD:

LHW

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