Concept and Simulations of 800 MHz Two-Stage MBK for FCC

Energy consumption is one of the major concerns when planning large-scale high energy accelerator projects such as the future circular collider (FCC) and similar accelerators. To address this problem, we will describe the concept and simulations of a 1.4 MW, 800 MHz two-stage multibeam klystron (TS MBK) having a high efficiency (~80%) and compact design.