This wiki explains how to view electron-proton collision events. The analysis package is described in FpadSoft

We will use e-p events shown in http://atlaswww.hep.anl.gov/hepsim/index.php?c=emp&e=141&t=all. The full simulations are located under the tag “rfull001”, which corresponds to SiD simulations.

You can run Jas3 to visualize the simulated events. Install Jas3 as:

wget http://java.freehep.org/maven2/org/freehep/jas-assembly/3.1.3/jas-assembly-3.1.3-distribution.tar.gz -O - | tar -xz;
cd jas-assembly-3.1.3/
./jas3

For windows: use the Jas download page and then run it using “jas3.bat”. Then install the needed plugins [View]-[Plugin manager] and install HEP packages “visualization”- “Wired4”, and “org.lcsim”. Restart Jas3.

Then copy the detector geometry file to the local directory where the file “jas” is:

wget http://atlaswww.hep.anl.gov/asc/hepsim/soft/detectors/sidloi3_heprep.tgz -O - | tar -xz;

This will create a directory “detector”. This detector corresponds to “rfull001” tag used for the reconstruction of events in http://atlaswww.hep.anl.gov/hepsim/index.php?c=emp&e=141&t=all.

Now we can visualize the detector as [File]-[Open data source]-[HepRep] XML and select file “detector/sidloi3/sidloi3.heprep”. This is how to do this using the command line:

./jas3 detector/sidloi3/sidloi3.heprep

Now you should see the detector layout.

Next, we will read the simulated events: Open any *.slcio file you copied from HepSim using the menu [File]-[Open data source]-[LCIO] For e-p events, use this LCIO file from rfull001.

wget http://mc.hep.anl.gov/asc/hepsim/events/ep/141gev/lepto6ard_dis5q2//rfull001/lepto6ard_dis5q2_0001_pandora.slcio

Then click a small button [Go] (top menu bar). It will process events. Then select again [File]-[New]-[Wired 4 view]. If you want to see how data records are organized inside the slcio file, do this [File]-[New]-[LCSim Event browser]

Please read FpadSoft

— Sergei Chekanov 2016/01/22 20:36