Design and simulation of a relativistic inverted magnetron

A high power inverted relativistic magnetron was designed and simulated using the massively parallel electromagnetic particle-in-cell code ICEPIC in conjunction with single particle smooth bore relativistic analysis. This Inverted Magnetron also known as the Inverted Magnetron Oscillator (IMO) detailed here has two design variations that will be presented, the IMO-1 and the IMO-2. Both IMO models are designed to operate in L-Band at very low magnetic fields. Common to both designs is an axial RF power extraction structure. ICEPIC simulations predict that the above features combined with the IMO's stable, robust and reliable performance in the desired mode over a large voltage range yield a class of HPM source notable for absence of downstream current loss as well as low confinement field performnce.