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We then fully simulate these events in our detector with SLIC and reconstruct them with algorithms and frameworks provided by PandoraPFA, LCFIVertex and LCFIVertex.org.lcsim.

(Note: This page is currently under construction and is not yet complete)

Required Software

For this tutorial you will need to have the following programs already installed:

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Event Generation With MadGraph and Pythia

Download and Install MadGraph5 and Pythia

Download MadGraph 5 from the MadGraph 5 downloads page after making a free account and unpack the file somewhere.

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$ python2 ./bin/mg5

Generate Events:

For this tutorial we will be simulating the process of two muons colliding with a center of mass energy of 125 GeV, creating a Z* boson which decays into two light quarks. This data will be used to generate detector-specific information that is used by the PandoraPFA photon reconstruction algorithm. A copy of this 'likelihood data' will be provided for the mcdrcal01 detector. For a more complete introduction to MadGraph, simply type mg5> tutorial or refer to the MadGraph 5 Wiki.

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Now we have a .hep file which can be read into SLIC for full detector simulation.

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Installing ILCSoft programs with ilcinstall

Now we will use the ilcinstall program to install the various ilcSoft packages we will need. These will be:

• slic
  • Geant4-based simulation
• slicPandora
  • PandoraPFA event reconstruction algorithms
• PandoraSettings
  • Useful premade settings files for PandoraPFA
• lcfiplus
  • LCFIPlus reconstruction does vertexing, jet finding and flavor tagging.

Installing SLIC

Note: Installing slic SLIC will involve compiling several programs, including Geant4 which is quite large. This will take a while even on a fast machine.
(...Installation of SLIC via ILCInstall...)

Installing others

Running SLIC

(...Link to mcdrcal01 file...)
SLIC Script:

/physics/select FTFP_BERT
/lcio/path /path/to/eventdata
/lcio/fileneame Z_uds_125GeV_iso
/lcio/fileExists delete
/lcdd/url /path/to/mcdrcal01/mcdrcal01.lcdd
/run/initialize
/generator/select stdhep
/generator/filename /path/to/MadGraph5_v1_5_11/my-mumu-z-uds/tag_1_pythia_events.hep
/run/beamOn 5000

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