Compact A6 magnetron with a neodymium permanent magnet

Summary form only given. The total efficiency of an HPM (High Power Microwave) system can be significantly increased by replacing the pulsed electromagnet system with a solenoidal permanent magnet. Additionally, the total size and weight of the system can be greatly reduced, thus providing a highly compact HPM source. We will test the feasibility of a permanent magnet on an A6 magnetron that uses a simple mode converter for axial extraction of microwaves. A solenoidal neodymium permanent magnet was simulated using FEMM, a finite element method magnetics code, to determine the ideal solenoid dimensions for a field uniformity of ~99% and a magnitude of 0.31 T [1]. The optimized design has dimensions of L=22.5 cm, R_i=5.72 cm, and R_o=14.3 and provides a field uniformity of 99.2% in the interaction region of the magnetron. The compact A6 magnetron with this optimized permanent magnet will be further studied using MAGIC, a 3-dimensional fully relativistic, fully electromagnetic particle-in-cell code, and the results will be presented.