Development of virtual accelerator environment for beam diagnostics

For the proper operation of Dalian Coherent Light Source (DCLS) linac, measurement and control of the electron bunch is essential. In order to test control algorithms and high level physical applications, a virtual accelerator environment is constructed based on ELEGANT code and SDDS Toolkit. The required beam parameter measurement and orbit control tools are tested under this virtual environment and will greatly speed up the development of machine commissioning tools. The design concept and current development status are presented.