WWW Public <fusion.gat.com> Only All <fusion.gat.com> 

Jump to: navigation, search

Equilibrium Mode Variables Specified in the IN1 Namelist

Variables which have no Defaults (and thus require inputs??) are printed in bold.

Free boundary equilibrium mode | Fixed boundary equilibrium mode
NBDRY "Number Boundary". This is the parameter which specifies that solution method is to be fixed boundary or free boundary equilibrium mode. Must set ICONVR=3.
  • -n = write out boundary points in S(shot).t every other n points.
  • 0 = do free boundary equilibrium solution (Default).
  • n = fixed boundary calculation given n boundary points or boundary constraints.

In fixed boundary mode, if successful will write out a x(shot).(time+1) file for free boundary runs using computed flux loop signals.


Free Boundary Equilibrium Mode Variables Specified in the IN1 Namelist

IFCURR "(Integer flag) Fcoil Currents". Only used in free boundary equilibrium calculations.
  • 1 = fixed F coil currents.
  • 0 = variable F-coil currents (Default)

Set = 0 in fitting and fixed boundary equilibrium solutions.


Fixed Boundary Equilibrium Mode Variables Specified in the IN1 Namelist

CFCOIL F coil stabilization constant for fixed boundary option. - = fixed during iterations. Smoothly varying currents or fit boundary closely; more negative implies smoother. (What do positive values mean?) Default = -1.0
ERRBRY "Error Boundary". Fixed boundary convergence criterion. Default = 10-4
FCSUM "F-coil Sum". Identifies which F-coils are included in fitted constraint that the sum of certain F coil currents is equal to zero. Length 18 vector with each entry having 2 possible values
  • 0 = do not include current from this coil in the sum
  • 1 = include current from this coil in the sum (default).

Ignored unless IFREF = 2.

FCZERO "Fcoil Zero". Fitting weights for zero F coil currents in fixed boundary option. Set to 10000 for zero. Default = all 1.0's
FWTBDRY "Fit Weight Boundary". Fitting weight for boundary points, use with NBDRY. Default = all 1.0's
IFREF For use with fixed boundary equilibrium.
  • 1 =determine boundary flux by setting the sum of inner F-coil currents to zero.
  • 2 = sum of F-coil currents zero set by array FCSUM.
  • 3 = minimize F-coil currents.
  • 4 = set boundary flux to PSIBRY.

Default = -1

PSIBRY "Psi Boundary". Flux at the boundary (fixed boundary mode?). Default=0.0
RBDRY "R Boundary". R of fixed boundary in meters. See NBDRY, ZBDRY. Default RBDRY(1)=-1.0
SIGRBD "Sigma R Boundary". R of boundary points uncertainty array in meters. Fixed boundary mode? Default = all 1010
SIGZBD "Sigma Z Boundary". Z of boundary points uncertainty array in meters. Fixed boundary mode? Default = all 1010
ZBDRY "Z Boundary". Z of fixed boundary in meters. See also NBDRY, RBDRY.

Retrieved from "http://fusion.gat.com/theory/Efitin1equilib"