Data Repository files
TITLE: The Role of Far-Field RF Sheats in SOL Losses of HHFW POwer on NSTX,
and Implications for Near-Field Studies of ICRF Antennae
AUTHORS: R. J. Perkins, J. C. Hosea, M. A. Jaworski, et al.
;;;FIGURE 2;;;
Fig2.dat contains five columns. The first column is the bias voltage
values, in volts, which goes on the horizontal axis. The remaining
four columns are the collected currents at each bias voltage for each
of the subplots: Fig. a-d.
The smooth red curves are the fits, Eq. 1 from the text. Fit parameters are:
Fig 1a: I_sat = 0.230, V_fl = -1.249, T_e = 19.74
Fig 1b: I_sat = 0.015, V_fl = -8.522, T_e = 18.36
Fig 1c: I_sat = 0.015, V_fl = -11.92, T_e = 21.27
Fig 1a: I_sat = 0.034, V_fl = -14.42, T_e = 43.37
;;;FIGURE 3;;;
In each of the files Fig3a-d.dat, the first column is the average RF
power for each sweep in megawatts, the values on the horizontal axis.
In Fig3a.dat, the second column is the change in floating potential in
volts, and th third column is the error of this quantity, in volts.
In Fig3b.dat, the second column is the electron temperature from the
fitting procedure in eV, and the third column is the error in electron
temperature, again in eV. The fourth column is the ion saturation
current from the fitting procedure in amps, and the fifth column is
the error in this quantity again in amps.
In Fig3c.dat, the second column is the RF voltage, computed from
Eq. 5, in volts, and the third column is the error in volts.
In Fig3d.dat, the second column is the RF conribution to the sheath
heat transmission factorassuming rectified currents, computed from
Eq. 9. This quantity is dimensionless. The errors for this quantity
are in the third column. The fourth column is the RF contribution to
the sheath heat transmission factor assuming rectified voltages,
Eq. 8, and the fifth column is the error in this quantity. Columns
four and five are dimensionless.