+-------------+ +----------##
| Geant 3.10 | GEANT User's Guide | TRAK200 ##
+-------------+ +----------##
Author(s) : R.Brun Submitted: 01.10.84
Origin : Same Revised: 23.05.86
+----------------------------------+
|CALL GTGAMA |
+----------------------------------+
See block diagrams below.
GTGAMA Block Diagram
VECT,SNEXT,SAFETY Compute distance up to next pair production: SPAIR Compute distance up to next scattering Compton: SCOMP Compute distance up to next photoelectric process: SPHOT Compute distance up to next photofission: SPFIS STEP = minimum of all steps Linear extrapolation If Pair production: CALL GPAIR If Compton scattering: CALL GCOMP If Photoelectric effect: CALL GPHOT If Photofission: CALL GPFIS VECT,STEP,NMEC,LMEC,NGKINE INWVOL,IGNEXT,ISTOP,DESTEP
+--------------------------------+
|CALL GTELEC |
+--------------------------------+
GTELEC Block Diagram VECT,SNEXT,SAFETY Compute SFIELD,SMULS,SLOSS Compute distance up to next Bremsstrahlung: SBREM Compute distance up to next Delta ray production: SDRAY Compute distance up to next positron annihilation point: SANNI STEP = minimum of all steps IF(FIELD=0) linear extrapolation otherwise CALL GUSWIM Check if still in same volume If not reduce step and start again CALL GINVOL Multiple scattering: CALL GMUL / GMOL CALL GINVOL If Bremsstrahlung: CALL GBREM If Delta ray: CALL GDRAY If Positron annihilation: CALL GANNI VECT,STEP,NMEC,LMEC,NGKINE INWVOL,IGNEXT,ISTOP,DESTEP
+--------------------------------+
|CALL GTNEUT |
+--------------------------------+
GTNEUT Block Diagram VECT,SNEXT,SAFETY Compute distance up to next hadronic interaction CALL GUPHAD -> SHADR Compute distance up to decay point -> SDCAY STEP = minimum of all steps Linear extrapolation If hadronic interaction: CALL GUHADR If Decay: CALL GDECAY VECT,STEP,NMEC,LMEC INWVOL,IGNEXT,ISTOP
+--------------------------------+
|CALL GTHADR |
+--------------------------------+
GTHADR Block Diagram VECT,SNEXT,SAFETY Compute SFIELD,SMULS,SLOSS,SDCAY Compute distance up to next Delta ray production SDRAY Compute distance up to next hadronic interaction CALL GUPHAD -> SHADR STEP = minimum of all steps IF(FIELD=0) linear extrapolation otherwise CALL GUSWIM otherwise CALL GUSWIM Check if still in same volume. If not reduce step and start again CALL GINVOL Multiple scattering: CALL GMUL / GMOL CALL GINVOL If Hadronic interaction: CALL GUHADR If Decay: CALL GDECAY If Delta ray : CALL GDRAY VECT,STEP,NMEC,LMEC,NGKINE INWVOL,IGNEXT,ISTOP,DESTEP
+--------------------------------+
|CALL GTMUON |
+--------------------------------+
GTMUON Block Diagram VECT,SNEXT,SAFETY Compute SFIELD,SMUL,SLOSS Compute distance up to decay point -> SDCAY Compute distance up to next Delta ray production SDRAY Compute distance up to next Bremsstrahlung SBREM Compute distance up to next Pair production SPAIR Compute distance up to next Nuclear interaction SMUNU STEP = minimum of all steps IF(FIELD=0) linear extrapolation otherwise CALL GUSWIM Check if still in same volume. If not reduce step and start again CALL GINVOL Multiple scattering: CALL GMUL / GMOL CALL GINVOL If Decay : CALL GDECAY If Delta ray : CALL GDRAY If Brems : CALL GBREMM If Pair : CALL GPAIRM If Nucl. Int.: CALL GMUNU VECT,STEP,NMEC,LMEC INWVOL,IGNEXT,ISTOP