CERN Accelerating science

Article
Title	Development of 36 GHz RF Systems for RF Linearisers
Related title	DEVELOPMENT OF 36 GHz RF SYSTEMS FOR RF LINEARISERS
Author(s)	Castilla, Alejandro (CERN ; Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U.) ; Behtouei, Mostafa (Frascati) ; Burt, Graeme (Lancaster U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Cai, Jinchi (CERN ; Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U.) ; Cross, Adrian W (Strathclyde U.) ; Latina, Andrea (CERN) ; Liu, Xingguang (CERN) ; Nix, Laurence J R (Strathclyde U.) ; Spataro, Bruno (Frascati) ; Syratchev, Igor (CERN) ; Wu, Xiaowei (CERN) ; Wuensch, Walter (CERN) ; Zhang, Liang (Strathclyde U.)
Publication	Geneva : JACoW, 2021
Number of pages	6
In:	JACoW IPAC '21 (2021) 4518-4523
In:	12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.4518-4523
DOI	10.18429/JACoW-IPAC2021-FRXB02 (publication)
Subject category	Accelerators and Storage Rings
Abstract	As part of the deign studies, the CompactLight project plans to use an injector in the C-band. Which constitutes a particular complication for the harmonic system in charge of linearising the beam’s phase space, since it means its operation frequency could be higher than the standard X-band RF technologies. In the present work, we investigated a 36 GHz (Ka-band) as the ideal frequency for the harmonic system. A set of structure designs are presented as candidates for the lineariser, based on different powering schemes and pulse compressor technologies. The comparison is made both in terms of beam dynamics and RF performance. Given the phase stability requirements for the MW class RF sources needed for this system, we performed careful studies of a Gyro-Klystron and a multi-beam klystron as potential RF sources, with both showing up to 3 MW available power using moderate modulator voltages. Alternatives for pulse compression at Ka-band are also discussed in this work.
Copyright/License	publication: © 2021 (License: CC-BY-3.0)

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