What are the domestic and international EMC (electromagnetic compatibility) standards for linear accelerators used in radiotherapy?

Linear radiotherapy accelerators (LINACs) are large, high-radiation devices whose EMC standards must comply with GB 9706.1, YY 0505 (domestic), and IEC 60601-1-2 (international). Internally, they contain a high-power microwave source (magnetron/klystron), a pulse modulator, a precision mechanical motion system, and a complex control system. Standards require that the powerful electromagnetic pulses they generate do not interfere with their own dose monitoring system and control computer, while also limiting their interference with the hospital's power grid and other equipment through power lines and space constraints. Due to their extremely high power, they typically require a dedicated shielded treatment room.