Simulation investigation of C-Band Magnetically Insulated Line Oscillator

The magnetically insulated line oscillator (MILO) is a high power microwave (HPM) pulsed device, potentially of gigawatt power, that combines the technologies of magnetically insulated electron flow with a slow-wave structure (SWS)^[1~3]. This combination makes the tube a device capable of operating over a wide voltage range. According to theoretical analysis of the slow-wave structure, a new type C-band MILO has been designed using the advantages of both tapered MILO and load-limited MILO. With the use of a 2.5D fully electromagnetic particle-in-cell (PIC) code, high power microwave is generated from the device with the average output power of 3.4GW, the frequency of 3.5GHz and the power conversion efficiency of 15%, when the applied voltage is 500 kV and current is 45kA.