/*! @page pag_concepts_scan Scans

\section sec_scanning Scanning

PMSCO with EDAC currently supports the following scan axes.

- kinetic energy E
- polar angle theta T
- azimuthal angle phi P
- analyser angle alpha A

The following combinations of these scan axes are allowed (see pmsco.data.SCANTYPES).

- E
- E-T
- E-A
- T-P (hemispherical or hologram scan)

@attention The T and A axes cannot be combined.
If a scan of one of them is specified, the other is assumed to be fixed at zero!
This assumption may change in the future,
so it is best to explicitly set the fixed angle to zero in the scan file.

@remark According to the measurement geometry at PEARL,
alpha scans are implemented in EDAC as theta scans at phi = 90 in fixed cluster mode.
The switch to fixed cluster mode is made by PMSCO internally,
no change of angles or other parameters is necessary in the scan or project files
besides filling the alpha instead of the theta column.


*/
