Anti-Interference Design in Cable SGEMP Experiment

Cable system generated electromagnetic pulse (SGEMP) refers to the phenomenon that X-ray interacts with the cable to produce electron, which then excites current and voltage response. The ideal irradiation environment for cable SGEMP experiment is pure X-ray, usually produced by accelerators. But, in practice, the accelerator will also produce strong electromagnetic pulse (EMP) radiation when producing X-rays. It is difficult to obtain a pure X-ray environment, which brings difficulties to experimental measurement. This article presents an anti-interference design in the cable SGEMP experiment for coaxial cable, which can effectively reduce the external EMP interference, and reduce the coupling of the electrons emitted by the shield itself to the experimental cable; the real SGEMP response can be deduced through the measured signal. The feasibility of anti-interference design is verified through simulation calculation and irradiation experiments.