Fix: Geometric decoupling & reduce memory consumption

Detector/DetCRD/scripts/TDR_o1_v01/sim.py

@@ -124,6 +124,9 @@ cal_sensdettool.CalNamesBirksConstants = [0.008415, 0.008415, 0.01, 0.01] # BGO
 
 from Configurables import MarlinEvtSeeder
 evtseeder = MarlinEvtSeeder("EventSeeder")
+
+from Configurables import GeomMetaWriter
+metaWriter = GeomMetaWriter("GeomMetaWriter")
     
 # output
 from Configurables import PodioOutput
@@ -134,7 +137,7 @@ out.outputCommands = ["keep *"]
 # ApplicationMgr
 from Configurables import ApplicationMgr
 mgr = ApplicationMgr(
-    TopAlg = [genalg, detsimalg, out],
+    TopAlg = [genalg, detsimalg, metaWriter, out],
     EvtSel = 'NONE',
     EvtMax = 50,
     ExtSvc = [rndmengine, rndmgensvc, dsvc, geosvc],