Spice_icon SPICE
Spectrometer Instrument Control Environment


begin:

The begin command begins a new experiment.

The syntax for the begin command is:

                  begin

This command will pop up the following dialog box which must be filled in before the new experiment will begin:
begin pop-up window
If a single crystal sample is selected, the user can choose how the initial orientation will be specified.  The available choices are:

1. Specify a scattering plane - vectors which define the scattering plane and the lattice constants must be given with this option.  NOTE: with this option, the 1st vector which defines the plane (h1,k1,l1) is assumed to be along the lower arc.
2. Start with no orientation specified - the lattice constants are specified with this option but no moves in Q-space will be allowed until a valid orientation has been specified.  For information on how to define an orientation see How to align a single crystal.
3. Keep last used orientation - this option will retain the orientation last used in the program.  This option is included primarily for cases where the same sample will be used in sebsequent experiments.

After the form is filled out, hit the Begin New Experiment button to initialize the new experiment.



This command can also be accessed from the GUI by choosing
File - New - Experiment from the pull-down menus as shown in the following image.
GUI begin