The Advanced Continuous-wave Electron injector aims to provide accelerator-based light sources with a high repetition rate and high average current electron beam. The injector consists of a DC thermionic gun generating a continuous electron beam, after which a radio-frequency (rf) cavity operating in dual mode at 1.5 and 3 GHz deflects the beam onto a knife-edge, creating a pulsed beam. A final rf cavity, also operating at 1.5 and 3 GHz, compresses the electron bunches for injection into a booster linac. The DC thermionic gun is fully operational and this paper presents the first results, demonstrating a continuous beam with a transverse emittance of $49\pm 2$ nm rad at 9.6 mA.

先进的连续波电子注入器旨在提供具有高重复率和高平均电流电子束的基于加速器的光源。注射器由一个直流热电子枪组成，产生连续的电子束，之后在 1.5 和 3 GHz 双模式下运行的射频 (rf) 腔将电子束偏转到刀刃上，产生脉冲束。最后一个射频腔也在 1.5 GHz 和 3 GHz 下工作，压缩电子束以注入到升压直线加速器中。直流热电子枪已完全投入使用，本文展示了第一个结果，展示了具有横向发射率的连续光束$49\pm 2$ nm rad 为 9.6 mA。