LCDD Homepage

Introduction

This is the homepage for the Linear Collider Detector Description (LCDD) XML format and C++ software package. It is an extension of the GDML software package, which is an XML geometry format and parser. LCDD is capable of modelling most Geant4 solids and therefore a wide variety of physics detectors including full detector designs and testbeams.

LCDD is a library rather than executable binary. The SLIC package uses it for geometry data input into Geant4.

Schemas

The LCDD XML format is composed of the following schemas.

• lcdd.xsd - container element
• lcdd_header.xsd - header with metadata on the detector
• lcdd_display.xsd - visualization attributes
• lcdd_fields.xsd - field definition and global assignment
• lcdd_sensitive_detectors.xsd.html - sensitive detectors with virtuals segmentations and reference to an ID'ing scheme
• lcdd_iddict.xsd - ID dictionary
• lcdd_limits.xsd - Limits
• lcdd_regions.xsd - regions

It also includes an embedded GDML element. This format has the following schemas.

• gdml.xsd
• gdml_core.xsd
• gdml_materials.xsd
• gdml_solids.xsd
• gdml_replicas.xsd
• gdml_parameterised.xsd

The LCDD and GDML schemas together provide a complete format for Linear Collider detector description and simulation.

Documentation

The SLAC-hosted Confluence Wiki is a place to post comments and find a few write-ups on the LCDD package.

The Getting Started Guide ... also has a Section on the LCDD Geometry Format.

Release Notes

• v1r8p0
• 1.12.0

Source Code

Here are quick instructions for checking out LCDD from CVS.

bash
export CVSROOT=:pserver:anonymous@cvs.freehep.org:/cvs/lcd
cvs co lcdd

There is also Doxygen-generated C++ documentation.

Feedback

Use the Jira Bug Tracker to formally report bugs and feature requests for LCDD.