Research on the measurement and shielding methods of the spatial electromagnetic radiation of the BEPCII Linac

Purpose The research focuses on the related measurement and shielding works for solving the spatial electromagnetic radiation and interference problems of the BEPCII Linac.
Methods The radiation frequency and intensity can be determined by using a set of antennas connected with a spectrum analyser.
Results The source of the radiation is located on the cable connectors of some device panels. The radiation intensity is significantly reduced after wrapping the connectors with the radiation shielding tape.
Conclusions The entire research process includes the selection of a domestically made ultra-wideband antenna, the proposal of the measurement methods, the locating of the radiation source, the performance measurement of the radiation shielding tape and the shielding of the radiation. It provides a whole set of feasible solutions for similar problems in accelerators.