233 GHz ultra-wide band TWTA: PPM Integrated sheet electron beam transport and PIC analysis

We report on the design and development of a PPM integrated 233 GHz staggered vane sheet beam TWTA [1, 2]. The permanent magnetic (NdFeB) based focusing lens structure for the sheet electron beam transport has been designed for a gun operated at 19 kV. For a beam tunnel of 830 μm * 160 μm, a transmitted current of ~ 200 mA is achieved for > 40 mm length… CONTINUE READING