sector_model: create initial system
sector_model: create initial system

willu47/smif,nismod/smif,nismod/smif,tomalrussell/smif,tomalrussell/smif,willu47/smif,tomalrussell/smif,tomalrussell/smif,willu47/smif,nismod/smif,willu47/smif,nismod/smif