CERN Accelerating science

Preprint
Report number	CERN-ACC-2024-0002 ; CLIC-Note-1197
Title	Single cylinder cavity based RF cavities for klystron-based Compact Linear Collider
Author(s)	Wang, Ping (CERN) ; Grudiev, Alexej (CERN)
Publication	2024
Imprint	07 May 2024
Number of pages	13
Subject category	Accelerators and Storage Rings
Study	CLIC
Abstract	The proposed pulse compression system for the klystron-based Compact Linear Collider (CLIC) is based on individual cavities. The essential requisites for this system encompass are easy fabrication, optimal RF performance, and cost-effectiveness. We have identified two novel RF cavity types which can be used as correction cavities for klystron-based CLIC pulse compression system, characterized by their compactness, advantageous large pass band or low surface field, and ease of fabrication. Both RF cavity types adopt a cylindrical resonant cavity with T E223 mode, employing four coupling holes to induce T E223 modes with dual polarizations. Power flow direction is facilitated by a U-shaped waveguide and a 3-dB Hybrid in two layouts. A comprehensive discussion on the principles underlying these RF cavity types is provided. Additionally, we elucidate the RF designs of the individual cavities for principle demonstration. Furthermore, these two RF cavity types can be readily adapted to other operational frequencies, such as C-band and S-band.
Submitted by	[email protected]