Running the Fast MC

This example will lead you through reading a 500 GeV ZZ generator and process it via the fastMC. This will output an ascii file (soon we will have shared libraries so you can run the fastMC directly in Root) which you convert to a Root file and then analyze.

The fastMC currently does not run on Windows. We believe this is due to a conflict between Root and the StdHep package.

1. if you just want to try the analysis macro, get the FMC dataset (pybmsSmallZZFMC.root 0.5 MB) from the repository, then proceed to step 6.
2. get the 500 GeV ZZ StdHep dataset ( pybms-ZZ-500-990115-gen-1.dat 1.2 MB) from the repository

3. obtain the parameters file for the Small or Large detector

4. run the fastMC standalone

   • fastMC pybms-ZZ-500-990115-gen-1.dat parameters-file output-file.dat

5. convert the ascii output-file to Root

   • asc2root output-file.dat output-file.root

6. get the canned analysis macro fmc.c and edit it to
   • reference your copy of the Event classes shared library (via gSystem.Load)

   • reference your output-file.root as input (via TFile)

7. fire up Root and execute the macro
   • .x fmc.c

   • draw up a histogram: ClsMult->Draw();

R.Dubois Last Modified: 01/13/04 12:49

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