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8. Physics commands

Macro commands related to Electromagnetic and Hadronic physics of the simulation.

See brief descriptions of the different available physics modules and models on the Physics List page.

Macro command	Type	M?	Description	Example value	Default value
/SEE/physics/addPhysics	string	n	Adding a G4 Physics module	G4IonPhysics	See Physics List
/SEE/physics/listProcesses	-	n	List all processes of all particle types	-	-
/SEE/physics/removeProcess	string, string	n	Remove a process of a particle type	e-, eIoni	-
/SEE/physics/setGammaCut	double u	n	Production range cut for \(\gamma\) *	2.5 mm	1 mm
/SEE/physics/setElectronCut	double u	n	Production range cut for \(e^-\) *	100 nm	1 um
/SEE/physics/setPositronCut	double u	n	Production range cut for \(e^+\) *	10 um	1 um
/SEE/physics/setHadronCut	double u	n	Production range cut for \(p\) and other hadrons *	200 nm	100 nm
/SEE/physics/setAllParticleCuts	double u	n	Production range cut for all particles *	1 um	-
/cuts/setLowEdge	double u	n	Lowest E threshold used when range cut is converted to energy	1 keV	10 eV

* Production range cuts are converted to energy internally.

Default production cuts in Silicon (both in range and energy):

Index : 2     used in the geometry : Yes
 Material : G4_Si
 Range cuts        :  gamma  1 mm           e-  1 um           e+  1 um       proton 100 nm 
 Energy thresholds :  gamma  6.95825 keV    e-  860.484 eV     e+  846.06 eV  proton 10 eV 
 Region(s) which use this couple : 
    Bulk
    Sensitive