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How to apply transformations on the geometry? (Alignment) [message #15051] Tue, 30 July 2013 16:24 Go to previous message
Felix Boehmer is currently offline  Felix Boehmer
Messages: 149
Registered: May 2007
Location: Munich
first-grade participant

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Dear experts,

is there some way of manipulating the geometry of single detectors in order to be able to study mis-alignment effects (or do proper tracking on real data...)?

Since the geometries are modular it looks like the framework would be (in principle) well-fitted to do this, for example FairModule::ConstructRootGeometry() could take an optional TGeoCombiTrans as an argument which is then applied on the nodes before adding them...

As far as I see it, right now one would have to create a new geometry file for every such case and smuggle it into the above routine. This seems extremely hackish to me. Are there plans for such an implementation? Or is there such a thing already? (I am working on an older branch as some of you might know...)


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