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The g2t Event Record
Table: g2t_event_st [0] : ====================================================================================== int eg_label 0 : Event label from event generator int event_type 0 : specifies trigger, pileup, cosmic, laser int ge_rndm[0] 9876 : geant random seeds at start of event [1] 54321 : int merge_info[0] 0 : as yet unspecified [1] 0 : [2] 0 : [3] 0 : [4] 0 : [5] 0 : [6] 0 : [7] 0 : [8] 0 : [9] 0 : int n_event 1 : Event number int n_part_neut_east 0 : number of participant neutrons int n_part_neut_west 0 : number of participant neutrons int n_part_prot_east 0 : number of participant protons int n_part_prot_west 0 : number of participant protons int n_run 0 : Run number int n_track_eg_fs 54 : Number of final state event gen. tracks int n_track_prim 74 : Number of primary tracks (w/o parent) int polarization[0] 0 : polarization info, as yet unspecified [1] 0 : [2] 0 : [3] 0 : [4] 0 : [5] 0 : [6] 0 : [7] 0 : [8] 0 : [9] 0 : int prim_vertex_p 1 : Id of first primary vertex in event float b_impact 0 : Impact parameter float phi_impact 0 : Azimuth of reaction plane float time_offset 0 : time offset in seconds wrt trigger event int subprocess_id 0 : Pythia subprocess Id int n_binary 0 : binary collisions int n_wounded_east 0 : wounded in the east nucleus int n_wounded_west 0 : wounded in the west nucleus int njets 0 : number of jets int n_rejected 0 : number of events rejected prior to the current one
Table: particle_st [0] : [1] : [2] : [3] : [4] : [5] : ====================================================================================== int isthep 3 : 3 : 3 : 3 : 3 : 3 : status code of the entry int idhep 2212 : 2212 : -1 : 21 : -1 : 21 : particle identity, accordingly to the PDG standard int jmohep[0] 0 : 0 : 1 : 2 : 3 : 4 : pointer(s) to position where the mother(s) stored [1] 0 : 0 : 1 : 2 : 3 : 4 : int jdahep[0] 0 : 0 : 0 : 0 : 0 : 0 : pointers to position of the first/last daughter [1] 0 : 0 : 0 : 0 : 0 : 0 : float phep[0] 0 : 0 :-0.82897 :-0.55208 :-0.67265 : -1.5853 : p4 and mass (GeV) [1] 0 : 0 : -2.2937 : 0.5708 : -1.7229 : 0.50817 : [2] 250 : -250 : 6.6566 : -13.94 : 5.7228 : -13.523 : [3] 250 : 250 : 7.0893 : 13.962 : 6.0142 : 13.625 : [4] 0.93827 : 0.93827 : 0 : 0 : 0 : 0 : float vhep[0] 0 : 0 : 0 : 0 : 0 : 0 : production vertex (mm) and time (mm/c) [1] 0 : 0 : 0 : 0 : 0 : 0 : [2] 0 : 0 : 0 : 0 : 0 : 0 : [3] 0 : 0 : 0 : 0 : 0 : 0 : ---------------------------------------------------------------------------------------
Table: g2t_vertex_st [0] : [1] : [2] : [3] : [4] : [5] : ====================================================================================== char ge_volume[0] "_eg_�� �`�""_eg_�� �`�""_eg_�� �`�""_eg_�� �`�""_eg_�� �`�""_eg_�� �`�" GEANT volume name int daughter_p 74 : 60 : 72 : 40 : 44 : 62 : Id of first daughter in linked list int eg_label 161 : 140 : 158 : 110 : 116 : 143 : generator label (or 0 if GEANT vertex) int eg_proc 0 : 0 : 0 : 0 : 0 : 0 : generator production mechanism (if any) int event_p 1 : 1 : 1 : 1 : 1 : 1 : pointer to event int ge_medium 0 : 0 : 0 : 0 : 0 : 0 : GEANT Medium int ge_proc 0 : 0 : 0 : 0 : 0 : 0 : >0 GEANT, =0 event generator int id 1 : 2 : 3 : 4 : 5 : 6 : primary key int is_itrmd 0 : 0 : 0 : 0 : 0 : 0 : flags intermediate vertex int n_daughter 54 : 8 : 3 : 3 : 2 : 2 : Number of daughter tracks int n_parent 0 : 0 : 0 : 0 : 0 : 0 : number of parent tracks int next_itrmd_p 0 : 0 : 0 : 0 : 0 : 0 : Id of next intermedate vertex int next_prim_v_p 0 : 0 : 0 : 0 : 0 : 0 : Id of next primary vertex int parent_p 0 : 0 : 0 : 0 : 0 : 0 : Id of first parent track float eg_tof 0 : 0 : 0 : 0 : 0 : 0 : generator vertex production time float eg_x[0] 0 : 0 : 0 : 0 : 0 : 0 : generator vertex coordinate (Cartesian) [1] 0 : 0 : 0 : 0 : 0 : 0 : [2] 0 : 0 : 0 : 0 : 0 : 0 : float ge_tof 0 :1.2096e-25 :2.4191e-20 :6.3012e-21 :6.0053e-25 :4.6536e-24 : GEANT vertex production time float ge_x[0] 0 :0.00019821 : 32.187 : 3.165 :-0.00063131 :0.00028898 : GEANT vertex coordinate (Cartesian) [1] 0 :0.00013085 : -78.608 : -15.29 :-0.00030285 :-0.00031378 : [2] 0 :0.0010721 : -186.39 : -52.409 :-0.0054096 :0.042274 : ---------------------------------------------------------------------------------------
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