The project of a high-power, spatially developed, planar surface-wave W-band generator with two-dimensional distributed feedback is developed jointly by the Institute of Applied Physics of the Russian Academy of Sciences and the Institute of Nuclear Physics of the Russian Academy of Sciences on the basis of the ELMI accelerator (an electron beam with a particle energy of 1 MeV, a current of 2–5 kA, and a pulse duration of 5 μs). The electrodynamic system of the generator is based on the use of a two-dimensional Bragg structure that combines the properties of a slow-wave system, which ensures efficient ˇ Cerenkov interaction with a rectilinear ribbon electron beam, and a high-Q cavity, which ensures selective excitation of the operating mode in the conditions of a significant value of the oversize parameter. The paper discusses design elements and parameters of the generator and presents the modeling results that demonstrate the possibility to achieve a stable narrow-band generation regime with a gigawatt level of the output radiation power. To ensure a mainly one-directional output of the radiation, a planar Bragg reflector was designed, which is installed in the channel for transportation of the relativistic ribbon electron beam on the cathode side of the interaction space.

俄罗斯科学院应用物理研究所和俄罗斯科学院核物理研究所联合开发了具有二维分布反馈的高功率，空间开发的平面表面波W波段发生器项目基于ELMI加速器（具有1 MeV的粒子能量，2–5 kA的电流和5 s的脉冲持续时间的电子束）的科学博士学位。发生器的电动系统基于二维布拉格结构的使用，该结构结合了慢波系统的特性，从而确保了ˇ Cerenkov与直线带状电子束以及高Q腔之间的有效相互作用。确保在过大参数的显着值的情况下有选择地激发操作模式。本文讨论了发生器的设计元素和参数，并给出了建模结果，这些结果证明了在输出辐射功率为千兆瓦的情况下实现稳定的窄带发电方案的可能性。为了确保辐射的主要单向输出，设计了平面布拉格反射器，该反射器安装在通道中，用于在相互作用空间的阴极侧传输相对论带状电子束。