HADCalSystem

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• Defines a LayeredTube (HADCalBarrel) from the input ascii file spec for barrel and two SlicedCones (HADCalEndcap) for endcaps. Layers are added for each from specs from the ascii file.
  • a very thin first layer, composed of air, is inserted into each subdetector so that the MCParticle position at the front face of the calorimeter can be stored.
  • the SlicedCone allows the endcaps to have inner radii follow a polar angle boundary.
• Contains the digitized hit map CellMap, an STL map, based on the CellArray templated class (allowing reuse by EMCalSystem).
  • Digitizer and DigitizerInterface objects are created for each layer via CellArray, with HADCalid and MCvsE as the template arguments; the layer number is also passed in. Insensitive layers are given a special layer number (99999).  Each digitizer references the main list in EMCalSystem.
  • HADCalId takes the space point and layer number to calculate a unique identifier that is used as the key in the map. It uses the segmentation values given in the input ascii file to create the hit ID (see Reference Geometry).
  • Hit information is stored in MCvsE, which contains the total deposited energy as well as another map storing the energy deposited per hit per MCParticle.

R.Dubois Last Modified: 01/13/04 12:43