Obsolete web page for info and historical purposes only!
Transfer of models from CAD systems to GEANT
GEANT is normally not capable of adapting
detector models constructed in CAD systems since
one can define objects in a CAD system which do not have any representation
in GEANT. Different approaches to solve
this problem are basically:
Insert physics simulation processes (including particle tracking)
into CAD systems
Approximate CAD models using GEANT geometry
Restrict CAD systems to produce only GEANT geometry
Include geometric representations of CAD systems in GEANT
More information about different approaches can be find
Below is a list of the tools available.
The approach used in DDT is to restrict CAD systems to produce only GEANT geometry.
DDT allows one to transfer detector geometry from
AutoCAD to GEANT. DDT is a "GEANT Shape Editor" within AutoCAD.
The approach used in PROGEANT is to restrict CAD systems to produce only GEANT geometry.
PROGEANT allows one to exchange detector geometry between GEANT and
3D-PSM, a CAD system from ItalCAD.
PROGEANT is a "GEANT Shape Editor" within 3D-PSM.
PROGEANT is a bi-directional interface.
The approach used in EUGENIE is to restrict CAD systems to produce only GEANT geometry.
EUGENIE allows one to exchange detector geometry between GEANT and
EUGENIE is a "GEANT Shape Editor" within EUCLID.
EUGENIE is a bi-directional interface.
The approach used in OCTAGON is to approximate CAD models using GEANT geometry.
OCTAGON takes DXF files generated by AutoCAD or VersaCAD, reconstructs a 3-d model and
reduces the model to a tree of boxes with a chosen resolution. This tree of boxes can then be absorbed into
any standard GEANT geometry. OCTAGON is suitable for absorbing one or a few CAD objects into an
existing GEANT representation of a detector.
The approach used in JuGENT is to restrict CAD systems to produce only GEANT geometry.
The JuGENT program reads IGES files, recognises GEANT shapes and produces a
"parameter file" which can be read by GEANT - or a Fortran file which
may be run with GEANT to create the model. JuGENT currently (1995) recognises 7
of the 16 GEANT shapes, and could be developed. For further information, contact
The approach used in GEREP is to include geometric representations of CAD systems in GEANT.
GEREP is an application for the proposed future object-oriented
GEANT 4 toolkit. It is able to
perform particle tracking in detector models described using B-Rep of
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Last updated 14.09.95
This page is obsolete and not maintained. For up to date
information, please consult EDMS or the IT web site