Variables output from EFIT may be in several output files:

                            A EQDSK File

A EQDSK provides various global plasma parameters of interest.

 Variables:
 ---------

AAQ1: minor radius of q=1 surface in m, 100 if not found 

AAQ2: minor radius of q=2 surface in m, 100 if not found 

AAQ3: minor radius of q=3 surface in m, 100 if not found 

ALI: li with normalization average poloidal magnetic defined through
     Ampere's law 

ALPHA: Shafranov boundary line integral parameter 

AOUT: plasma minor radius in m 

AREAO: cross sectional area in m2 

BCENTR: vacuum toroidal magnetic field in Tesla at RCENCM 

BETAP: poloidal b with normalization average poloidal magnetic BPOLAV
       defined through Ampere's law 

BETAPD: diamagnetic poloidal b 

BETAT: toroidal b in % 

BETATD: diamagnetic toroidal b in % 

BPOLAV: average poloidal magnetic field in Tesla defined through Ampere's
        law 

BTAXP: toroidal magnetic field at magnetic axis in Tesla 

BTAXV: vacuum toroidal magnetic field at magnetic axis in Tesla 

CCBRSP: computed external coil currents in Ampere 

CDFLUX: computed diamagnetic flux in Volt-sec 

CHIGAMT: total chi2 MSE 

CHIPRE: total chi2 pressure 

CHIPRE: total chi2 pressure 

CJ1AVE: normalized average current density in plasma outer 5% normalized
        poloidal flux region 

CJOR0: normalized axial flux surface average current density 

CJOR95: normalized flux surface average current density at 95% of normalized
        poloidal flux 

CJOR99: normalized flux surface average current density at 99% of normalized
        poloidal flux 

CPASMA: fitted plasma toroidal current in Ampere-turn 

CPROF: current profile parametrization parameter 

CSILOP: computed flux loop signals in Weber 

DCO2R: line average electron density in m3 from radial CO2 chord 

DCO2V: line average electron density in m3 from vertical CO2 chord 

DOUTL: upper triangularity 

DOUTU: upper triangularity 

ECCURT: measured E-coil current in Ampere 

ELONGM: elongation at magnetic axis 

EOUT: Plasma boundary elongation 

FEXPAN: flux expansion at x point 

FEXPVS: flux expansion at outer lower vessel hit spot 

FLUXX: measured diamagnetic flux in Volt-sec 

JFLAG: error flag, 0 for error 

LFLAG: error flag, > 0 for error 

LIMLOC: plasma configuration. IN, OUT, TOP, and BOT for limiter

	configurations limited at inside, outside, top, and bottom. SNT,
	SNB, and DN for single null top, single null bottom, and double null
	configurations. MAR for marginally diverted configurations. 

MCO2V: number of vertical CO2 density chords 

MCO2R: number of radial CO2 density chords 

JFLAG: error flag, 0 for error 

OBOTT: plasma bottom gap in m 

OBOTS: bottom gap of external second separatrix in m 

OLEFT: plasma inner gap in m 

OLEFS: inner gap of external second separatrix in m 

ORIGHT: plasma outer gap in m 

ORIGHS: outer gap of external second separatrix in m 

ORING: not used 

OTOP: plasma top gap in m 

OTOPS: top gap of external second separatrix in m 

PASMAT: measured plasma toroidal current in Ampere 

PBINJ: neutral beam injection power in Watts 

PP95: normalized P'(y) at 95% normalized poloidal flux 

PSURFA: plasma boundary surface area in m2 

PSIREF: reference poloidal flux in VS/rad 

QMERCI: Mercier stability criterion on axial q(0), q(0) > QMERCI for
        stability 

QMFLAG: axial q(0) flag, FIX if constrained and CLC for float 

QOUT: q at plasma boundary 

QPSIB: q at 95% of poloidal flux 

QQMAGX: axial safety factor q(0) 

QQMIN: minimum safety factor qmin 

QSTA: equivalent safety factor q* 

RCENCM: major radius in m for vacuum field BCENTR 

RCO2R: path length in m of radial CO2 density chord 

RCO2V: path length in m of vertical CO2 density chord 

RCURRT: major radius in m of current centroid 

RMIDIN: inner major radius in m at Z=0.0 

RMIDOUT: outer major radius in m at Z=0.0 

RMAGX: major radius in m at magnetic axis 

RQQMIN: normalized radius of qmin , square root of normalized volume 

ROUT: majpr radius of geometric center in m 

RSEPS: majpr radius of x point in m 

RTTT: Shafranov boundary line integral parameter 

RVSIN: major radius of vessel inner hit spot in m 

RVSOUT: major radius of vessel outer hit spot in m 

S1, S2, S3: Shafranov boundary line integrals 

SEPEXP: separatrix radial expansion in m 

SEPLIM: > 0 for minimum gap in m in divertor configurations, < 0 absolute
        value for minimum distance to external separatrix in limiter 
	configurations 

SEPNOS: radial distance in m between x point and external field line at
        ZNOSE 

SHEARB: magnetic shear at 95% enclosed normalized poloidal flux 

SIBDRY: plasma boundary poloidal flux in Weber/rad 

SIMAGX: boundary poloidal flux in Weber/rad at magnetic axis 

SLANTL: gap to lower outboard limiter in m 

SLANTU: gap to upper outboard limiter in m 

SSEP: outboard radial distance to external second separatrix in m for single
      null configurations. positive for double nulls or single top null 
      and negative for single bottom null. 

SSI01: magnetic shear at 1% of normalized poloidal flux 

SSI95: magnetic shear at 95% of normalized poloidal flux 

TAUMHD: energy confinement time in s 

TAUDIA: diamagnetic energy confinement time in s 

TAVEM: average time in s for magnetic and MSE data 

TERROR: equilibrium convergence error 

TIME: time in s 

TSAISQ: total chi2 from magnetic probes, flux loops, Rogowskiand external
        coils 

VERTN: vacuum field index at current centroid 

VLOOPT: measured loop voltage in volt 

VSURFA: plasma surface loop voltage in volt, E EQDSK only 

VOUT: plasma volume in m3 

WBDOT: time derivative of poloidal magnetic energy in Watt, E EQDSK only 

WBDOT: time derivative of poloidal magnetic energy in Watt, E EQDSK only 

WPDOT: time derivative of plasma stored energy in Watt, E EQDSK only 

WPLASMD: diamagnetic plasma stored energy in Joule 

XNDNT: plasma boundary indentation 

XNNC: vertical stability parameter, vacuum field index normalized to
      critical index value 

YYY2: Shafranov Y2 current moment 

ZCURRT: Z in m at current centroid 

ZMAGX: Z in m at magnetic axis 

ZOUT: Z of geometric center in m 

ZSEPS: Z of x point in m 

ZVSIN: Z of vessel inner hit spot in m 

ZVSOUT: Z of vessel outer hit spot in m


------------------------------------------------------------------------

			      G EQDSK Files 
			      -------------

The G EQDSK file contains information on P', FF', the flux on the
rectangular grid used, q, the boundary, and the limiter contour. A
right-handed cylindrical coordinate system (R, phi, Z) is used. The G EQDSK
provides information on the pressure , poloidal current function, q profile
on a uniform flux grid from the magnetic axis to the plasma boundary and the
poloidal flux function on the rectangular computation grid. Information on
the plasma boundary and the surrounding limiter contour is also provided. 

Variables 
---------

CASE: Identification character string 

NW: Number of horizontal R grid points 

NH: Number of vertical Z grid points 


Namelist OUT1:  

BCENTR: Vacuum toroidal magnetic field in Tesla at RCENTR 

CURRENT: Plasma current in Ampere 

FPOL: Poloidal current function in m-T, F = RBT on flux grid 

FFPRIM: FF'(psi) in (mT)2 / (Weber/rad) on uniform flux grid 

LIMITR: Number of limiter points 

NBBBS: Number of boundary points 

NQPSI: 

PPRIME: P'(psi) in (nt/m2) / (Weber/rad) on uniform flux grid 

PRES: Plasma pressure in nt / m2 on uniform flux grid 

PSIZR: Poloidal flux in Weber/rad on the rectangular grid points 

QPSI: q values on uniform flux grid from axis to boundary 

RBBBS: R of boundary points in meter 

RCENTR: R in meter of vacuum toroidal magnetic field BCENTR 

RDIM: Horizontal dimension in meter of computational box 

RLEFT: Minimum R in meter of rectangular computational box 

RLIM: R of surrounding limiter contour in meter 

RMAXIS: R of magnetic axis in meter 

SIMAG: poloidal flux at magnetic axis in Weber/rad 

SIBRY: poloidal flux at the plasma boundary in Weber/rad 

ZBBBS: Z of boundary points in meter 

ZDIM: Vertical dimension in meter of computational box 

ZLIM: Z of surrounding limiter contour in meter 

ZMAXIS: Z of magnetic axis in meter 

ZMID: Z of center of computational box in meter 


Namelist BASIS  

  KPPFNC  KPPKNT  PPKNT  PPTENS  KFFFNC  KFFKNT  FFKNT 
  FFTENS  KWWFNC  KWWKNT  WWKNT  WWTENS  PPBDRY  PP2BDRY  KPPBDRY  KPP2BDRY 
  FFBDRY  FF2BDRY  KFFBDRY  KFF2BDRY  WWBDRY  WW2BDRY  KWWBDRY  KWW2BDRY 

Namelist CHIOUT

  SAISIL  SAIMPI  SAIPR  SAIIP  
  
Toroidal Current Density  The toroidal current JT related to P'(psi) and
FF'(psi) through  JT (Amp/m2) = R P'(psi) + FF'(psi)/R 

also see https://fusion.gat.com/THEORY/efit/efit_outputs.html

(comments/corrections to bdavis @pppl.gov)