Studying Particle Flow with Fireworks


This page explains how to set up an experimental version of Fireworks, to study the particle flow reconstruction.

The modified version of Fireworks is able to display

  • ECAL and HCAL rechits
  • PFClusters
  • Tracks, with their extrapolated position in the calorimeters
  • Blocks
  • PFCandidates
  • PFJets
It is a tool to understand how the particle flow algorithm identifies and reconstructs particles, using these inputs.

To display the particles created by the particle flow algorithm, just use the standard version of Fireworks.

Installation recipe

1. Download the latest stable version of Fireworks, follow the standard installing instructions and test program execution. The following is assumed:

  • Your fireworks directory is ~/Documents/cmsShow-vNum
  • You are either:
    • working on a mac with xcode installed,
    • using an slc5 terminal, have access to an slc5 terminal (e.g. ssh
    • using the chroot method explained here.

2. Assuming successful execution, a CVS environment will now need to be set up in order to obtain the latest particle flow source code. In your fireworks directory (e.g. ~/Documents/cmsShow-vNum) run the following commands:

    cd src/
    export CVS_RSH=ssh
    rm -rf Fireworks/ParticleFlow
    cvs co Fireworks/ParticleFlow

3. Recompile with the new source code.

    cd ../

4. You should now be able to run Fireworks as normal


If you wish to start Fireworks with the PF configuration file then a new command line argument must be passed.

   ./cmsShow -c pflow.fwc data.root
This method can also be used to pass other configuration files to Fireworks upon start-up. e.g.
   ./cmsShow -c example.fwc data.root 
The particle flow configuration file can also be loaded during runtime. In the main Fireworks interface go to File and select Load Configuration OR, press Ctrl and l simultaneously. In the new window open pflow.fwc.

-- ColinBernet - 08-Feb-2011

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Topic revision: r7 - 2011-02-10 - ColinBernet



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