L波段10 MW高效率单注速调管的互作用计算

Interation Efficiency Improvement of L-Band 10 MW Single-Beam Klystron: A Simulation Study

许多大科学装置都将使用大量的L波段10 MW高功率速调管,提高该管的效率对节约能源,降低成本具有十分重要的意义。虽然目前L波段10 MW的多注速调管已研制成功,但多注速调管结构复杂,制造成本昂贵。本文通过使用当前世界上提高速调管效率的新方法及一种特殊的谐波腔组合方法,改进了L波段10 MW单注速调管的互作用效率,使其达到了同类多注速调管的效率水平。

The interation efficiency of L-band 10 MW single-beam klystron,was simulated in Core Oscillation Method(COM)and in Banching Aligning Collecting(BAC)method with 1-D KLY software,respectively.In the simulation,the klystron was assumed to operate at 152 kV,101 A and a center-frequency of 1300 MHz.Simulated in COM and BAC method,the interation efficiency,of the klystron capable of generating an output power 11 MW,was calculated to be 73.1%and 72.1%,respectively,being higher than 65%of L-band 10 MW multi-beam klystrons,reported in literature.Moreover,the interation efficiency was also simulated in a self-developed Harmonic Cavity Combination method.The simulated results show that the interation efficiency(72.2%)of the single-beam klystron,with the shortest interation length of 0.75 m,can be as high as that of the newly-developed multi-beam klystron.3-D simulation is under way to verify the 1-D simulation results we reported.