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Event
Generation on the Farm with OSCAR
Here
we will generate some events using OSCAR (Object
oriented Simulation for Cms Analysis and Reconstruction) the GEANT4 based
CMS detector simulation. First
we create the OSCAR directory structure and set up the environment
correctly.
cd $TOP
scram project OSCAR OSCAR_2_4_6
cd OSCAR_2_4_6/src
cmscvsroot OSCAR
cvs co -r OSCAR_2_4_6 Workspace
cd Workspace/
eval `scram runtime -csh`
rehash
The
OSCAR executable is provided with the OSCAR release so let's
not compile it here. In the ORCA part we will learn how to
build executables. The OSCAR simulation part is very time consuming.
It takes at least
a day (24 h) to simulate 300 Z'-> jj events.
If you are not serious about the output don't use up all the
slots in the batch system for lengthy jobs! Be nice to your
fellow physicists! So let's only produce a few events here.
cd
$SCRIPTS
setup kerberos
setup fbsng
fbs submit zprime_mumu_oscar.jdf 8 10000 5
This
will submit job with 8 processes into the batch queue where
each process
will process 5 events (That will take about half an hour.)
1.
General setup
2. Available data sets in
DST format
3. Event generation on the farm
with CMKIN (Pythia), Analysis of the generator level output.
4. Simulate the events with
OSCAR
5. Digitize with ORCA and produce
DST's
6. Run a muon ROOT Tree maker
looking at the DST and make some simple plots
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