WP#02/2012 – Checking Overlaps in Existing G4 Baseline Geometry

Collaborative partners: CERN

Recently unexpected overlaps have been discovered in coil cryostat tube description. They are not presented in XML and Persint and arise later when Athena is running. Reason should be in XML->GeoModel->G4 transformation or in fault of G4 Boolean processor. Purpose of WP is to check G4 baseline geometry how it looks like in Athena and in case of finding unexpected overlaps modifying G4 volumes in order to avoid them.

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