Commit 4f8a0180 authored by Valentina Fioretti's avatar Valentina Fioretti
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Edit getting_started.md

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doc/getting_started.md

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## Configuration keywords



### Activating simulation from particle list



The primary particles in Geant4 can be randomly generated from a distribution defined in GPS by means of the macro file, or can be defined from a list, that describes for each row the particle type, energy, direction cosines and position from where the particle is generated.



- `EVENT.PRIMARY.LIST.ACTIVATE` = 0/1 to activate the use of lists (default = 0)

- `EVENT.PRIMARY.FORMAT` = 0 (ASCII), 1 (ROOT), 2 (FITS) (default = 0)

- `EVENT.PRIMARY.LIST.FILENAME` = path to the file

## Primary input definition



## Geometry