First accelerator test of vacuum components with laser-engineered surfaces for electron-cloud mitigation

Sergio Calatroni (Lead / Corresponding author), Elisa Garcia-Tabares Valdivieso (Contributing member), Holger Neupert (Contributing member), Valentin Nistor (Contributing member), Ana Teresa Perez Fontenla (Contributing member), Mauro Taborelli (Contributing member), Paolo Chiggiato (Research group member), Oleg Malyshev (Contributing member), Reza Valizadeh (Contributing member), Stefan Wackerow (Contributing member), Svetlana Zolotovskaya (Contributing member), William Gillespie (Research group member), Amin Abdolvand

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)
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Abstract

Electron cloud mitigation is an essential requirement for high-intensity proton circular accelerators. Among other solutions, laser engineered surface structures (LESS) present the advantages of having potentially a very low secondary electron yield (SEY) and allowing simple scalability for mass production. Two copper liners with LESS have been manufactured and successfully tested by monitoring the electron cloud current in a dipole magnet in the SPS accelerator at CERN during the 2016 run. In this paper we report on these results as well as the detailed experiments carried out on samples—such as the SEY and topography studies—which led to an optimized treatment in view of the SPS test and future possible use in the HL-LHC.
Original languageEnglish
Article number113201
Pages (from-to)113201-1-113201-12
Number of pages12
JournalPhysical Review Special Topics - Accelerators and Beams
Volume20
Issue number11
Early online date10 Nov 2017
DOIs
Publication statusPublished - 20 Nov 2017

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