EXIT | exit with warning ifparameters are not saved |
EXFF | exit without saving |
LIST | list ofparameters |
SAVE | saves parameters inthe current parameter file |
SAVE as | prompts for a new parameter filename |
FILE | change param. file withwarning if old parameters are not saved (ILL spectra files are acceptedas well) |
CFG | changes the name ofthe configuration file (default is simres00.cfg) |
RO | sets "optimal" crystalcurvatures (parallel beam focusing for monochromator and sample-to-detectorfocusing for analyzer)(a mask in the form: i j k l (=0 1) specifies whichcurvaturehas to be actually changed e.g. RO 0 1 0 0 changes only ROMV) |
MRO [n] | Optimize crystal curvature using MonteCarlo tracing n=1..4 stands for ROMH..ROAV respectively |
POS x y z | changes sample position (for Monte Carlo only) x isparallel to ki z is vertical. Without parameters it writes the current position |
FLX [f] | set neutron flux [1e14/s/cm^2] |
TEMP [T] | set source temperature [K] |
CRYST [n] | set the crystal name. Crystal parameters (absorption reflectivity etc..) will be read from the "crystal.lib" library. The commandasks for the crystal name which must be the same as in the "crystal.lib"file (ASCII format). n=1|2 means monochromator|analyzer. Withoutparameter the command prints the current setting. Ge 111 is the initialdefault. |
Attention: The d-spacing is contained in the library and
will rewrite the value given from the command line (or the *.res)
file. To modify d-spacing, you need first to edit crystal.lib file
(2nd column).
PLOT | Plot 2 dim. beam profile. Simultaneously, 3 corresponding ASCII data
files are created:
ness_x_i.dat .... projection on y=0 ness_y_i.dat .... projection on x=0 ness_2d_i.dat .... x y z data where i = 1..9 is incremented on each PLOT command |
SVOL | plots the image of sample gaugevolume |
LPROF | plots the lambda distribution across thesample |
DPROF | plots the beam profile along the detector |
TPROF | plots the powder peak profile calculatedfrom the resolution function R(Q) |
MPROF | plots multidetector scan (powder diffraction) |
PRINT n | repeats the last plot command (above), but sends result on the printer using the command defined in the environment variable PGPLOT_ILL_PRINT_CMD. |
GRFDEV | set graphics device string for PGPLOT (default read from PGPLOT_DEV environment variable) |
FLUX | simulates the intensity at the sample starting at the source |
NFLUX | as FLUX, but starts at the sample (FASTER !) |
FLUX 2 | simulates the intensity at the detector, considering an ideal powder sample. Detector distance is then equal to the sum of sample-to-analyzer and analyzer-to-sample distances. Analyzer and collimator 4 are ignored. |
NFLUX 2 | as FLUX 2, but starts at the sample (FASTER !) Use DPROF or PLOT commands to view the result. |
PWD | resolution funciton of a powder diffractometer (COL4 and analyzer ignored) Use TPROF command to view the result. |
PWDS | scan powder peak by multidetector with step DTH Use MPROF command to view the result. |
MONIT n | run simulation from the source to monitor n, placed after:
n=0 ... source n=1 ... guide A n=2 ... guide B n=3 ... collimator 1 n=4 ... monochromator n=5 ... collimator 2 A n=6 ... collimator 2 B n=7 ... Vanad sample (transmission) n=8 ... collimator 3 n=9 ... analyzer n=10 ... collimator 4 Use PLOT command to view the result. |
TAS | Simulates TAS resolution function R(Q,E). Returns Vanad scan width. Other output will be added in next versions. |
ROCK [nev np dth] | simulate rocking curve of the monochromator using narrow, parallel
and monochromatic beam
nev .. number of eventsx1000 per point (default 1) np .. number of points dth .. angular step [min] Use MPROF command to view the result. |
SHELL | permits to perform a single shell command |
Note:
Full set of parameters describing instrument components
is written to the file 'res_setup.txt' after each simulation (commands
NFLUX, ROCK, PWD etc..).