Analysis of stability and higher-order mode interaction for a sheet-beam coupled-cavity slow-wave structure
Sheet-beam coupled-cavity slow-wave structures (SWS) are inherently 3-dimensional with complicated electric fields and overmoded dispersion. To perform initial analyses of the beam-wave interaction, we have modified existing 1-dimensional cylindrical-beam models to accommodate the sheet-beam geometry. Here we discuss the models, assess the accuracy of approaches, present results of stability analyses, and describe beam interactions with higher-order modes (HOMs) in the structure [1], some of which overlap the fundamental mode in frequency.