SONGRuiying~1 YANG Jihua~2 SHI Huidong~1 LVChaofeng~1 SUQingjie~1 SONG Ruiqing~1 1. Realization of digital AFC and AVC based on beam loading in RF system of a petal-shaped E-beam irradiator[J]. Nuclear techniques, 2011, 34(12): 916-920.
SONGRuiying~1 YANG Jihua~2 SHI Huidong~1 LVChaofeng~1 SUQingjie~1 SONG Ruiqing~1 1. Realization of digital AFC and AVC based on beam loading in RF system of a petal-shaped E-beam irradiator[J]. Nuclear techniques, 2011, 34(12): 916-920.DOI:
accelerating cavity and beam acceleration of the petal-shaped accelerator developed at Ningbo Superpower High-tech Co.
Ltd.The stability requirement on amplitude-frequency characteristics are derived by considering the beam loading and cavity detuning.The implementation scheme of low level controller based on digital AFC and AVC is proposed.The working process and implementation method of AFC and PID algorithm are described.Test results show that the stability index of cavity voltage is less than 0.8%
and the digital AFC and AVC closed-loop function has been proved by a 24-h test operation of the system.