TKD Pattern Simulations

Once you have a complete TKD master pattern simulation, the next step is to set up your detector parameters and grain orientations to compute actual patterns. For this help page, we will assume that you already know the relevant parameters, and you simply want to compute TKD patterns.

The relevant program is called EMTKD, and you generate the name list file template by typing:

EMTKD -t

Most of the parameters of this program are similar to those used by the EMEBSD program, so we refer the user to the help pages for that program; the one-line explanations in the template file, reproduced here, should be sufficiently clear.

 &TKDdata
! template file for the EMTKD program
!
! distance between scintillator and illumination point [microns]
 L = 15000.0,
! tilt angle of the camera (positive below horizontal, [degrees])
 thetac = 10.0,
! CCD pixel size on the scintillator surface [microns]
 delta = 50.0,
! number of CCD pixels along x and y
 numsx = 640,
 numsy = 480,
! pattern center coordinates in units of pixels
 xpc = 0.0,
 ypc = 0.0,
! angle between normal of sample and detector
 omega = 0.0,
! transfer lens barrel distortion parameter
 alphaBD = 0.0,
! energy range in the intensity summation [keV]
 energymin = 5.0,
 energymax = 20.0,
! name of angle file (euler angles or quaternions); path relative to EMdatapathname
 anglefile = 'testeuler.txt',
! 'tsl' or 'hkl' Euler angle convention parameter
 eulerconvention = 'tsl',
! name of EBSD master output file; path relative to EMdatapathname
 masterfile = 'master.h5',
! name of Monte Carlo output file; path relative to EMdatapathname
 energyfile = 'MC.h5',
! name of output file; path relative to EMdatapathname
 datafile = 'EBSDout.h5',
! incident beam current [nA]
 beamcurrent = 150.0,
! beam dwell time [micro s]
 dwelltime = 100.0,
! binning mode (1, 2, 4, or 8)
 binning = 1,
! intensity scaling mode 'not' = no scaling, 'lin' = linear, 'gam' = gamma correction
 scalingmode = 'not',
! gamma correction factor
 gammavalue = 1.0,
! should a circular mask be applied to the data? 'y', 'n'
 maskpattern = 'n',
! number of threads (default = 1)
 nthreads = 1,
 /