BASE010 Simplified Program Flow Chart

MAIN 		 		 		 		 		 		 		 		 		 user routine


   		 GZEBRA 		 		 		 		 		 		 		 		 initialisation of
ZEBRA system, dynamic core allocation 

  		 UGINIT 		 		 		 		 		 		 		 		 user routine


  		 		 GINIT 		 		 		 		 		 		 		 initialisation of
 GEANT variables 

  		 		 GFFGO 		 		 		 		 		 		 		 interpretation of
data records 

  		 		 GZINIT 		 		 		 		 		 		 		 initialisation of
ZEBRA core divisions and link areas 

  		 		 GPART/GSPART 		 		 		 		 		 		 		 creation of the
 particle data structure  JPART 

  		 		 GMATE/GSMATE 		 		 		 		 		 		 		 creation of the 
material data structure  JMATE 

  		 		  user code 		 		 		 		 		 		 		 description
of the geometrical setup, of the sensitive detectors,
creation of data structures
 JVOLUM, JTMED, JROTM, JSETS 

  		 		 GPHYSI 		 		 		 		 		 		 		 preparation of
cross-section and energy-loss tables for all used materials 

  		 GRUN 		 		 		 		 		 		 		 		 loop over events


  		 		 GTRIGI 		 		 		 		 		 		 		 initialisation for
event processing 

  		 		 GTRIG 		 		 		 		 		 		 		 event processing


  		 		 		 GUKINE 		 		 		 		 		 		 (user)  generation
(or input) of event initial kinematics 

  		 		 		 GUTREV 		 		 		 		 		 		 (user) 

  		 		 		 		 GTREVE 		 		 		 		 		 loop over tracks,
including any secondaries generated 

  		 		 		 		 		 GUTRAK 		 		 		 		 (user) 

  		 		 		 		 		 		 GTRACK 		 		 		 control tracking of
current track 

  		 		 		 		 		 		 		 GFINDS 		 		 find current
volume in the geometry tree 

  		 		 		 		 		 		 		 GUSTEP 		 		 (user) recording of
hits in data structure  JHITS and of space points in data structure
 JXYZ 

  		 		 		 		 		 		 		 GUPARA 		 		 called if the particle
falls below the tracking threshold 

  		 		 		 		 		 		 		 		 GTGAMA/GTELEC/... 		 tracking
of particle according to type 

  		 		 		 		 		 		 		 GFSTAT 		  		 fill banks for volume
statistics 

  		 		 		 		 		 		 		 GSTRAC 		  		 store information
of the current track segment 

  		 		 		 		 		 		 		 GUSTEP 		  		 (user) recording of
hits in data structure  JHITS and of space points in data structure
 JXYZ 

  		 		 		 		 		 		 		 GTMEDI 		  		 finds in which           
volume/medium the current space point is 

  		 		 		 		 		 		 		 GUSTEP 		  		 (user) recording of
hits in data structure  JHITS and of space points in data structure
 JXYZ 

  		 		 		 GUDIGI 		 		 		 		 		 		 computation of
digitisations and recording in data structure  JDIGI 

  		 		 		 GUOUT 		 		 		 		 		 		 output of current
event 

  		 		 GTRIGC 		 		 		 		 		 		 		 clearing of memory
for next event 

  		 UGLAST 		 		 		 		 		 		 		 		 (user) 

  		 		 GLAST 		 		 		 		 		 		 		 standard  GEANT
termination 

M.Maire

BASE020