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Thank you, Gabriele! I will try and report (I am using GRAS, in fact). Svetlana On 9/6/17 3:32 AM, Gabriele Cosmo wrote: > *** Discussion title: Geometry > > Hi Svetlana, > > you can specify NIST materials by their name in your GDML file, and these > should be properly handled in Geant4 (see the sample mat_nist.gdml in > example extended/persistency/gdml/G01). > This will trigger schema validation warnings at the time the GDML file is > parsed, as such configuration is not foreseen by the schema itself, but > materials will be nevertheless properly loaded from the internal > NIST data-base in Geant4. > Hope it helps! > > Gabriele > > --------------------- > On Tue, 05 Sep 2017 18:05:31 GMT, Svetlana Shasharina wrote: >> Hello, A couple of questions: >> >> 1. If I use just G4_Al etc without defining it within gdml, the material >> does not get found. This is strange, because the elements are in the G4 >> source file. Why materials are not found? >> >> 2. So I started usin populating my own database materials.xml file and >> use it with this syntax: >> >> <!DOCTYPE gdml [ >> <!ENTITY materials SYSTEM "materials.xml"> >> >> ]> >> >> But maybe somebody can point me to a comprehensive materials.xml file >> that I could include, instead of me populating this file? >> >> Thanks, Sveta > ------------------------------------------------------------- > Visit this GEANT4 at hypernews.slac.stanford.edu message (to reply or unsubscribe) at: > http://hypernews.slac.stanford.edu/HyperNews/geant4/get/geometry/1546/1.html >