Running the CLICSiD Example

2 Running the CLICSiD Example

DDEve is started using the root executable. In the following we describe how to start a display application of $D D E v e$ using the CLICSiD example.

$> root.exe $DD4hepINSTALL/examples/DDEve/DDEve.C

When the command is issued the following display shows up:

Click on ”Dismiss” then the ﬁle browser opens and you have to select a $D D E v e$ conﬁguration ﬁle:

Figure 2: The $D D E v e$ popup dialog to open the XML conﬁguration ﬁle.

Move to the directory $DD4hepINSTALL/examples/CLIDSid/eve and open the $D D E v e$ conﬁguration ﬁle DDEve.xml. The basic idea is that $D D E v e$ as an application is truly generic.

Next you should see the default pane with the instantiated CLICSiD detector:

Figure 3: The $D D E v e$ default view showing the loaded detector.

Then open from the "DD4hep" menu the item "Open Event Data". Move again to the directory $DD4hepINSTALL/examples/CLIDSid/eve and open the sample ﬁle CLICSiD_Events.root containing a sample of events being the output of a DDG4 simulation step:

Figure 4: The popup dialog to open event data ﬁles.

Using the "Views" menu other predeﬁned detector views may be used.

The "Eve" tab on the pane to the left allows to further customize the predeﬁned views, the Evt I/O tab to control which event should be displayed.

Figure 5: An example of a customized view with sub-panes. Please proceed to the XML conﬁguration ﬁle how to create a predeﬁned view.

Figure 6: Calorimeter energy deposits in the ECAL (red) and the HCAL(blue).

Figure 7: HCAL calorimeter deposits together with Monte-Carlo tracks.

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