Title :
Numerical simulation of a 1 THz vacuum electronic source
Author :
Yong-Qiang Liu ; Ling-Bao Kong ; Chao-Hai Du ; Pu-Kun Liu
Author_Institution :
Sch. of Electron. Eng. & Comput. Sci., Peking Univ., Beijing, China
Abstract :
A 1 THz vacuum electronic source has been designed and implemented by Particle-in-cell (PIC) simulation based on rectangular grating slow-wave structure (SWS) and half duty cycle electron beam. The dispersion relation and coupling impedance are analyzed numerically. The simulation results predict that this designed 1 THz vacuum source can produce maximum 102 W saturated power at the end of structure with 19.55 kV, 1A electron beam at frequencies between 0.9985-1.0007 THz. The power growth rate is approximately 23.06 W/mm and modulation depth of pulsed electron beam is nearly 2.10% with a 3 dB bandwidth of 1.1GHz. This vacuum source operate without input driving signal and can be developed into compact, powerful, mobile and attainable sheet-beam THz vacuum electronic sources.
Keywords :
electron beams; slow wave structures; vacuum microelectronics; PIC simulation; SWS; bandwidth 1.1 GHz; coupling impedance; current 1 A; dispersion relation; frequency 1 THz; half duty cycle electron beam; modulation depth; particle-in-cell; power 102 W; power growth rate; pulsed electron beam; rectangular grating slow-wave structure; vacuum electronic source; voltage 19.55 kV; Couplings; Dispersion; Electron beams; Gratings; Impedance; Simulation; Particle-in-Cell; Terahertz; pulse electron beam; spontaneous drive and amplification; vacuum electronic sources;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7223925
