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DD4hep based geometry models for lepton collider detectors (Formerly known as lcgeo)

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lcgeo (Lepton Collider Geometry)

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Implementation of Lepton Collider detector models in DD4hep.

lcgeo is distributed under the GPLv3 License

License

Requirements

DD4hep built with Geant4 and LCIO

Download and Installation

Download

  • git clone https://github.com/iLCSoft/lcgeo.git

  • cd lcgeo ; mkdir build ; cd build

Initialize dependency

  • source __path_to_DD4hep__/bin/thisdd4hep.sh

  • cmake -DBoost_NO_BOOST_CMAKE=ON ..

Build

  • make -j4 install

Initialize

  • source ../bin/thislcgeo.sh

Running some examples

go to cd ./example

Create single particle input file

Modify the python script ./example/lcio_particle_gun.py in order to create an LCIO input file with single particles:

  • export PYTHONPATH=${LCIO}/src/python:${ROOTSYS}/lib:$PYTHONPATH
  • python lcio_particle_gun.py

There is also example input file with 10 singe muons: ./mcparticles.slcio

Run the simulation:

  • ddsim --compactFile ../ILD/compact/ILD_o1_v05/ILD_o1_v05.xml --inputFiles mcparticles.slcio -N 10

This creates an lcio file simple_lcio.slcio with sim hits and MCParticles.

You can look at it in the usual way

  • anajob simple_lcio.slcio

  • dumpevent simple_lcio.slcio 1

Change the ddsim command line parameters as needed to read other input files.

Event displays:

There are several ways for visualizing the detector geometry and the simulated events:

  1. CED event display

    ced2go -d gear_ILD_o1_v05_ORG.xml -t ced2go-template.xml simple_lcio.slcio

  2. teveDisplay

    ln -s simple_lcio.slcio teve_infile.slcio

    teveDisplay ../ILD/compact/ILD_o1_v05/ILD_o1_v05.xml

  3. DDEve:

    root

    .x $DD4hepINSTALL/examples/DDEve/DDEve.C()

    and then load

    ../ILD/compact/ILD_o1_v05/DDEve.xml

Running the reconstruction with Marlin (EXPERIMENTAL)

  1. create a gear file from the DD4hep detector model, e.g.

    convertToGear default ../trunk/ILD/compact/ILD_o1_v05.xml gear_ILD_o1_v05_dd4hep.xml

    [ Friendly reminder: in order to work you need to explicitly build DD4hep with GEAR enabled. Use the flag -DDD4HEP_USE_GEAR="ON" for the cmake command. ]

    Note: currently this might still be incomplete and you can copy missing information for example from the original Mokka gear files ( or use $DDSIM/example/gear_ILD_o1_v05_dd4hep.xml )

  2. run simulation (as described above), e.g.:

    python ddsim.py ../ILD/compact/ILD_o1_v05/ILD_o1_v05.xml

  3. run the standard reconstruction ( tracking only so far ):

    Marlin ../example/ild_dd4hep_stdreco.xml
    --global.LCIOInputFiles=./simple_lcio.slcio --MyLCIOOutputProcessor.LCIOOutputFile=./simple_lcio_REC.slcio

  4. look at the result w/ the CED event display, e.g.

    ced2go -d ../example/gear_ILD_o1_v05_ORG.xml -t ../example/ced2go-template.xml simple_lcio_REC.slcio

License and Copyright

Copyright (C), lcgeo Authors

lcgeo is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License long with this program. If not, see http://www.gnu.org/licenses/.

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