Fluctuations -> Midplane data -> alt. 2D wavenumber spectrum
General Description
Plots toroidal angle and time-averaged fluctuation power spectra at the outboard midplane. Using the definition
this tool will plot S(r,n) = < | fn(r) | 2 > t or S(kr,n) = < | fn(kr) | 2 > t for n > 0. The user also has the option of plotting the spectrum as a function of kθρs rather than n, where kθ = nq / r. Note that for local (i.e. "flat profile") simulations q / r and ρs are constants giving a linear relation between n and kθ, while in simulations with radially varying profiles, kθρs is a function of r.
Note: becasue of an IDL bug, the colorbar on the right of the plot is disabled by default. This bug does not appear to be a problem when running IDL in OS X, so the colorbar can be easily resotred by "uncommenting" the relevant code.
Sample Images
Image:Midplane krktheta.tiff
Image:Midplane rktheta.tiff
Button Definitions
- Plot
- Generate/regenerate plot
- field up
- Cycles up through all possible fluctuation fields (electrostatic potential, ion and electron density, energy, and temperature)
- field dn
- Cycles down the fluctuation fields
- kr/r
- Toggles x-axis of plot between r and krρs.
- kt/n
- Toggles y-axis between kθρs and toroidal mode number n. For non-local simulations, if the x-axis corresponds to r then the radial dependance of kθρs is accounted for in the plot, while if the x-axis corresponds to kr, the value of kθρs evaluated at r = r0 is used.
- Max kr
- Sets the ploting range of the kr axis (from
 to  ).
- Min power
- Sets minimum power level plotted.
- Max power
- Sets maximum power level plotted.
- PS dump
- Create postscript file from screen image
- Write to .sav file
- Dump data to IDL savefile
- Write to text file
- Dump data to ASCII file
- Done
- Kill plot window
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