First Experimental Data on a New SR Beamline of the VEPP-2000 Complex for the HL-LHC Vacuum System

A. M. Semenov, V. V. Anashin, A. A. Zharikov, A. A. Krasnov, G. A. Fatkin, D. B. Shwartz

Research output: Contribution to journalArticlepeer-review

Abstract

In the framework of the large hadron collider (LHC) upgrade project, new materials are proposed for the vacuum. Amorphous carbon deposited onto the vacuum-chamber wall is examined as a coating with a low secondary electron emission rate for superconducting systems designed to upgrade the LHC, i.e., to increase the luminosity of the machine (HL-LHC). Since protons will generate synchrotron radiation with a critical energy of ~10 eV and a flux of 1016 photon m–1 s–1, it is important to study the effect of photons on a surface covered with amorphous carbon at room and cryogenic temperatures. The construction and parameters of the setup on the new synchrotron beamline of the VEPP-2000 booster are described. The first results of measuring the photodesorption coefficient are also presented.

Original languageEnglish
Pages (from-to)13-16
Number of pages4
JournalJournal of Surface Investigation
Volume14
Issue number1
DOIs
Publication statusPublished - Jan 2020

Keywords

  • amorphous carbon
  • large hadron collider
  • photodesorption
  • vacuum

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