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

authors

  • CALATRONI, SERGIO
  • GARCIA-TABARES VALDIVIESO, ELISA
  • NEUPERT, HOLGER
  • NISTOR, VALENTIN
  • PÉREZ FONTELA, ANA TERESA
  • TABORELLI, MAURO
  • CHIGGIATO, PAOLO
  • MALYSHEV, OLEG
  • VALIZADEH, REZA
  • Wackerow, Stefan
  • ZOLOTOVSKAYA, SVETLANA A.
  • GILLESPIE, W. ALLAN
  • Abdolvand, Amin

publication date

  • November 2017

start page

  • 113201-1

end page

  • 113201-12

issue

  • 11

volume

  • 20

International Standard Serial Number (ISSN)

  • 2469-9888

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.

subjects

  • Chemistry
  • Industrial Engineering
  • Materials science and engineering
  • Physics

keywords

  • vacuum technology; laser applications; particle accelerators