Abstract
| Particle accelerators at CERN and worldwide use fast pulsed magnet systems (kickers) for beam injection, extraction, and disposal. These systems operate at high voltages (up to 80 kV) and currents (up to 30 kA) with risetimes as fast as 10 ns, producing pulses comparable to lightning strikes in terms of current amplitude, length, and spectrum. This paper presents a novel active electromagnetic interference (EMI) compensation method to address the EMI challenges inherent in these systems. The proposed method involves inducing a counter voltage into the coaxial transmission lines, effectively neutralizing voltage differences caused by the finite conductivity in the return conductors and connectors. Simulations and experimental results demonstrate significant reduction in EMI. |