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Production a Millepede input binary

1. Reconstruct data with GBL (to this purpose, you need to include the GblDriver and GblOutputDriver in your steering file).

   1. For Montecarlo data:

      1. run the readoout with the steering file: HPS2014ReadoutNoPileup.lcsim
      2. run the recon with the steering file: HPS2014OfflineNoPileUp.lcsim
   2. For real data use as steering file: /org/hps/steering/recon/EngineeringRun2015FullReconGbl2.lcsim
2. Check that at the end of reconstruction a out.gbl ascii file (or, named as you decided in the GblOutputDriver) is produced.
3. Remember that by default the geometry is taken from the database. If you want to force the use of your own geometry, you must provide it in the compact.xml file in a given detector. For MonteCarlo data, set the run number to zero during readout and reconstruction. This is done adding the flag -Drun=0 when running both the readout. For real data, use the -DdisableSvtAlignmentConstants flag.. IMPORTANT: remember to re-compile hps-java before running each time you change the compact.xml file!
4. The out.gblfile is read by a python procedure. You must download with git the current version of the software from the github repository as descrived in the following. This will create a hps-gbl directory. After having configured your account and username for git usage, issue the following commands:
   • git clone https://github.com/perhansson/hps-gbl
   • git submodule init
   • git submodule update
   • git pull
   (the second and third command need to be issued just upon installation, and they are needed since you will have to download something else from github in a while -see following points- and some directories are shared in the github repository).
5. remember to install the GBL software, if you already haven'it. In a directory parallel to hps-gbl download the GBL software using svn:
   • svn co http://svnsrv.desy.de/public/GeneralBrokenLines/tags/v01-16-02 GeneralBrokenLines
   (or check the newest release, and get it). To compile it:
   • cd GeneralBrokenLines/cpp
   • mkdir build; cd build
   • cmake ../
   • make install
   • make doc
6. the gbl python procedure reads the out.gbl file and prepares the binary read by Millepede. You must run python from the hps-gbl directory. This is the shortest syntax (-h shows all possible options):
   • cd hps-gbl
   • python gbltst-hps.py [-h] GBLFILE
   A heap of pdf files are produced containing plots of several quantities for top/bottom halves, with long names that should be self-explaining (but at the moment they are not really so, this must be improved). You will also file a .root file containing the single root histograms, and a .ps file containing a summary of the plots ready to be printed.
   Note: root must be compiled including the python support, otherwise python stops with an error complaining about root libraries missing.

Running Millepede

Create a new compact based on Millepede corrections

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