NU JPsi Simulations

__Quick Start__

1. Copy /work/halld/home/sdobbs/jpsi_mc
2. To load software configurations, use setup_jlab.csh script, e.g., "source setup_jlab.csh"
3. Optional, check out your own copy of latest software and build it:
   1. HDDS geometry package: svn co https://halldsvn.jlab.org/repos/trunk/hdds
   2. sim-recon: svn co https://halldsvn.jlab.org/repos/trunk/sim-recon
   3. Designate local build area by setting HALLD_MY
   4. J/psi event generator: svn co https://halldsvn.jlab.org/repos/trunk/home/sdobbs/bggen_jpsi - place in local build area
4. Build/develop plugin: /work/halld/home/sdobbs/halld_my/ccbar_recon

__Simulations__

Example files are located at.

/work/halld/home/sdobbs/jpsi_mc/

The simulation chain looks like the following:

bggen_jpsi
hdgeant
mcsmear hdgeant.hddm
hd_root -PPLUGINS=analysis_plugin hdgeant_smeared.hddm

Where

• bggen_jpsi generates the 4-vectors of the reaction. It is one of the many generator programs that does so.
• hdgeant simulates the path of the generated particles through the detector using GEANT
• mcsmear simulates the response of the detector
• hd_root is the main analysis program