Simulation and optimization in the object-oriented environment of electrophysical laboratories

The modern version (2015) of Simulation Environment of Virtual Electrophysics Labs, including the set of virtual laboratories for basic subsystems of charged particles accelerators research are presented in the article. There is way to provide safe realization of works with options, that require using of hard measures of accident (large electric power, supertension, different types of radiation and so on) and to prevent high expenses. The Simulation Environment can be used, both in educational and in pre-project researches, and also for analysis and optimization of operating abilities.