Authors: Grant Gorfine

Introduction

This package contains the factories for building the GeoModel Detector Description of the SCT. It builds both the material geometry using the GeoModelKernel and the readout geometry using classes in InDetReadoutGeometry.

The creation of the geometry is initiated by the DetectorTool (SCT_DetectorTool) which is called from GeoModelSvc. The DetectorTool calls a top level factory (eg SCT_DetectorFactory) which starts the building process.

The version of geometry is controlled by the Detector Description tag which can be specified at various levels (ATLAS, InnerDetector or SCT node).

See https://uimon.cern.ch/twiki/bin/view/Atlas/InDetGeometryVersions for current versions supported.

See the InDetDetDescrExample package for examples of how to load the geometry and access detector elements.

Class Overview

The package contains several helper factories which build the different components of the SCT. Some of the other classes are described here:

SCT_DetectorTool: Tool called by GeoModelSvc to start the building process
SCT_DetectorFactory: Top level factory for SCT. It in turn calls the component factories.
SCT_DetectorFactoryCosmic: Top level factory for building SCT barrel for Cosmic run in SR1 building.
SCT_ComponentFactory: Base class for all component factories.
SCT_GeometryManager: General manager.
SCT_Identifier: Helper class for building up the ATLAS Identifier
SCT_DataBase: Access the Detector Description database
SCT_xxxParameters: Interfaces for primary numbers.
SCT_MaterialManager: Interface to the material manager.
SCT_Options: Class to contain various building options.
SCT_DefaultConditions: Class to store default conditions data.