We propose an original way to produce several thin helical electron beams using one common magnetic system. The proposed systems with broken azimuthal symmetry of the emission surface of the adiabatic magnetron-injection gun (MIG) can be used in multibarrel gyrotrons. Specific features of the new system are analyzed on an example of MIGs optimized for gyrotron operation at a frequency of 140 GHz and compared with MIGs for other frequency ranges. The influence of the azimuthal drift on the operation of the gyrotron is analyzed both in the regime of singlefrequency stable generation and in the case of switching on/off the gyrotron setup.

中文翻译：

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多管回旋管电子光学系统的设计

我们提出了一种使用一个通用磁系统产生多个细螺旋电子束的原始方法。所提出的绝热磁控管喷射枪 (MIG) 发射面方位对称性破缺的系统可用于多管回旋管。新系统的具体特性在一个针对回旋管在 140 GHz 频率下运行优化的 MIG 示例中进行了分析，并与其他频率范围的 MIG 进行了比较。在单频稳定产生机制和打开/关闭回旋管装置的情况下，分析了方位角漂移对回旋管工作的影响。