CERN Accelerating science

Published Articles
Title	Complex technological solutions for particle accelerators
Author(s)	Malyshev, Oleg B (Daresbury) ; Valizadeh, Reza (Daresbury)
Publication	2020
Number of pages	6
In:	ECLOUD’18: Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, La Biodola, Isola d'Elba, Italy, 3 - 7 Jun 2018, pp.217-222 (CERN-2020-007)
DOI	10.23732/CYRCP-2020-007.217
Subject category	Accelerators and Storage Rings
Abstract	An advantage of complex technological solutions that address a few problems is demonstrated on two examples: laser ablation surface engineering (LASE) and non-evaporable getter (NEG) coated surfaces. NEG coating is not only the best vacuum solution for UHV/XHV accelerator vacuum chamber but can also provide electron cloud mitigation. LASE surface can provide not only SEY <1 (which is sufficient for e-cloud elimination but also reduces ther- mal and particle stimulated gas desorption). Both LASE and NEG has been characterised for their surface resistance and its impact on a beam wakefield impedance. It has been demonstrated that the surface resistance for both LASE and NEG can be reduced to meet the specification on the required surface resistance and provide the required vacuum and e-cloud mitigation properties.
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