In modern high energy accelerators, with the increase of charge in a bunch or a bunch train, the induced transient beam loading voltages become higher and higher when the beams pass through the standing wave cavities.

Based on the beam loading theory in storage ring, traditional mode with large detuned angle and tuned mode of RF system in the injection process of Hefei light source (HLS) were calculated and disadvantages of these two modes were analyzed.

Beam transient ch.