PSD-TRICS Count and Tricsscan Command
New Commands
As of 2005, the normal SICS scan command can be used for TRICS. There is
now a special command:
scan2d
which switches to PSD scan mode. Switching to single detector mode is
achieved through:
scan1d
H, k and l are now virtual motors in SICS and can be scanned normally.
Obsolete Commands
Several special commands have been defined for TRICS with a PSD:
- count mode preset
- counts with all three detectors. The parameter mode defines which
counting mode is used, supported are preset for counting up to a
preset monitor or timer for counting for a specified time intervall.
The second prameter preset is either the preset monitor or the preset
counting time, depending on the mode choosen. Both parameters are
optional, if they are notc specified values from the last run will be used.
count does not store any data.
- tricsscan start step np mode preset
- This command creates a new data file and then performs a scan in omega,
storing meausured data after each step. start step np define the
scan range in omega. Start is the start position, step the step width to
use and np is the number of steps to do. The optional parameters mode and
preset have the same meaning as in the count command described above.
Mode and preset how data is collected at each step in omega.
- psdrefscan filename step np mode preset
- reads reflection HKL values from file filename and performs
tricsscans for each reflection. These will be done eith step width
step, the number of steps np with counting mode mode and a preset of
preset. These parameters have the same meaning as described above. If the
{\bf hkl nb 1} command has been given before the invocation of this scan,
reflections will be searched in normal beam geometry. psdrefscan, however,
will only print the normal four circle angles, though.
- detscan start step np mode preset
- Detscan performs a scan in two theta. This may be useful for detector
calibrations. Arguments as described above.
- phscan start step np mode preset
- Phscan performs a scan in phi. This can be usefule for orienting a
crystal. Arguments as described above.
- o2tscan2d start step np mode preset
- O2tscan2d performs a omega - two-theta scan with the PSD.
Arguments as described above.
- hklscan2d
- For a scan in reciprocal space with the PSD, see the
documentation for hklscan. Please note that
for a PSD HKL scan, all commans have to start with hklscan2d.