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Software Description
ComTec GmbH
5-19
5.1.11. Dual-parameter spectra with a scaler parameter
If the scaler option is installed, it is possible to have scaler data of scalers 1, 3 and 4 in the event
stamp, see chapter 5.1.6. If such scaler data and ADCs in coincidence mode are are enabled, it
is also possible to create dualparameter spectra of an ADC versus a scaler parameter. The dialog
for creating dualparameter spectra contains then a button labeled “
Add Scaler...
”, see Fig. 5.26.
There is a choice of Scalers S1, S3, S4, and S3xS4 as scaler parameters. Especially interesting
is selecting S3xS4, if for these scalers the Up/Down counting option is enabled. “S3xS4” means
actually that the x-parameter is calculated as S3 + S4 * Sx-range. S3 and S4 could be connected
to counters that are incremented or decremented if the x- or y-coordinate of a beam position on a
target is moved. So it is then possible together with setting conditions on peaks in the ADC
spectrum to create images of element distributions on a target, using
PIXE
or similar methods. In
the dialog the image dimensions can be chosen as
Sx range
and
Sy range
. Press
Apply
to
make
changes actual. The default beam position can be defined with
Sx Offset
and
Sy Offset
.
Fig. 5.26: Creating a dualparameter Scaler spectrum