Updated target geometry and material handling in CVT Eloss

[raffaelladevita]

Needed for RG-C

• Target geometry and materials are now read from the CCDB table /geometry/materials/target. The target volumes are defined in the table according to the following rules:
  • surfaces are identified by layer and should be defined for layer = 1, 2, and 3,
  • multiple sublayers, identified by component, can be added with different materials,
  • layer=1 component=1 is the target material and should always be present,
  • the target material is assumed to be a full cylinder (min radius should be 0) while the other surfaces are "tubes",
  • for layer 1, the target material volume is created and any additional sublayer is assumed to be equivalent to the target cell walls,
  • for layer 2 and 3, when multiple sublayers are defined, the surface radius and length are set to the largest values among the sublayers,
• ELoss in the target cell accounts for the vertex position and, therefore, the raster in the RG-C case.
• Geometry class singleton now loads geometry for the actual run number.

[raffaelladevita]

Tested by Noemie on RG-A and RG-C geometries
updated_geom_RGA.pdf
updated_geom_RGC.pdf