---

Package Geometry/CommonDetUnit

Source code (CVS tag: @) - Administrative privileges

Description

Base classes modelling tracking detectors and the entry point to the geometry.

Public interface

Detector model:

• GeomDet
• GeomDetUnit
• GeomDetType

Geometry of GeomDet and GeomDetUnit:

• TrackingGeometry is the base class for all tracking geometries (TrackerGeometry, DTGeometry, CSCGeometry, RPCGeometry).
• GlobalTrackingGeometry is a is a single entry point to the geometries of the tracker and muon detectors. Its main purpose is to allow to get an element of the geometry given its DetId, regardless of wich subdetector it belongs. A typical application is to transform to global coordinates the position of a list of simhits or rechits that belong to several different tracking detectors.

Helper classes:

• DetSorting
• DetPositioner
• ModifiedSurfaceGenerator

Modules

The GlobalTrackingGeometry can be created in two ways:

• using globalTrackingGeometry.cfi, that also creates all slave geometries:

  include "Geometry/CommonDetUnit/data/globalTrackingGeometry.cfi"
  

• using bareGlobalTrackingGeometry.cfi, which does not create any of the slave geometries and allows to specify only few of them.

  include "Geometry/CommonDetUnit/data/bareGlobalTrackingGeometry.cfi"
  

Unit tests and examples

• testDetSort.cpp : example and test for DetSorting helper classes.

A test and example application for GlobalTrackingGeometry can be found in package Package Geometry/GlobalTrackingGeometryBuilder .

Status and planned development

Completed.

---

Last updated: @ Author: Nicola Amapane

---