Multipactor phenomenon of high-power pill-box window

Based on the S-band classical pill-box window, Monte Carlo (MC) numerical simulation was performed to study the multipactor regime. The behavior of the multipactor under multi-mode (TE11 mode and TM11 mode) electric field in the S-band classical pill-box window loaded with 2 distinct window disks was investigated. The characteristics of one-sided multipactor and two-sided multipactor in the pill-box window were analyzed. It was proved that the two-sided multipactor would be excited between the copper wall and the window disk under the effect of TM11 mode in the surface of un-coated window disk when low power was transmitting. In addition, the one-sided multipactor would be apparent in the center of window disk when high power was transmitting.