An optical control system used for adjusting the source’s parameters of an ion separator is described. There are two slice microcomputers at HV terminal and the ground respectively. These microcomputers communicate each other with the full-duplex mode through two pieces of optical fiber

in which many parameters are time-share transmitted in the form of optical pulse. This system can stabilize the arc current and temperature

adjust and display all parameters and has safe-guard ability. At HV terminal

the optical coupling technique is used for connecting the CPU and the ion source

and at the ground the CPU can communicate with a control microcomputer.