Resolve "Split subsystems into their own directories."

Closes #20 (closed)

benchmarks/roman_pots/roman_pot_simu.sh

 #!/bin/bash
 
+if [[ ! -n  "${JUGGLER_DETECTOR}" ]] ; then 
+  export JUGGLER_DETECTOR="topside"
+fi
+
+if [[ ! -n  "${JUGGLER_N_EVENTS}" ]] ; then 
+  export JUGGLER_N_EVENTS=1000
+fi
+
 ddsim --runType batch -N 300 \
+
+npsim --runType batch \
+      -v WARNING \
+      --part.minimalKineticEnergy 0.5*GeV  \
+      --numberOfEvents ${JUGGLER_N_EVENTS} \
+      --compactFile ${DETECTOR_PATH}/${JUGGLER_DETECTOR}.xml \
 	--inputFiles ./data/forward_ions.hepmc \
-	--compactFile benchmarks/trackers/roman_pot.xml \
-	--outputFile ./sim_output/roman_pot_out.root
+      --outputFile sim_output/${JUGGLER_SIM_FILE}