Design and implementation of one key on/off program at the accelerator of CSNS

There are hundreds of electric power supplies and radio frequency equipment in the accelerator of CSNS. Operations of these devices are executed through twenty-odd operator interfaces, which are time-consuming and cumbersome. During these processes, breakdowns are easy to occur but difficult to debug. To simplify the machine operation process, a one-key-on/off-operation program is developed. This program integrates the twenty-odd operator interfaces into a single one. The switch on/off operation of every device is realized in a thread, and the program completes the operation of all the devices concurrently. This program accomplishes the machine snapshot save/restore and the switch on/off operation of all the electric power supplies and radio frequency equipment through a one-button operation in the operator interface. With this program, the time needed to switch on/off all the devices in the machine is reduced from forty minutes to about two minutes. This program could be applied to other facilities.