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Carbon Coatings with Low Secondary Electron Yield / Taborelli, M (CERN) ; Colaux, J (Namur U.) ; Costa Pinto, P (CERN) ; Calatroni, S (CERN) ; Chiggiato, P (CERN) ; Edwards, P (CERN) ; Letant-Delrieux, D (CERN) ; Lucas, S (Namur U.) ; Neupert, H (CERN) ; Vollenberg, W (CERN) et al.
Carbon thin films for electron cloud mitigation and anti-multipacting applications have been prepared by dc magnetron sputtering in both neon and argon discharge gases and by plasma enhanced chemical vapour deposition (PECVD) using acetylene. The thin films have been characterized using Secondary Electron Yield (SEY) measurements, Scanning Electron Microscopy (SEM), Nuclear Reaction Analysis (NRA) and X-ray Photoelectron Spectroscopy (XPS). [...]
CERN-ATS-2012-287.- Geneva : CERN, 2013 - 31 p. - Published in : Vacuum 98 (2013) 29-36 Fulltext: PDF;
In : 14th Joint Vacuum Conference - 12th European Vacuum Conference - 11th Annual Meeting of the German Vacuum Society - 19th Croatian - Slovenian Vacuum Meeting, Dubrovnik, Croatia, 4 - 8 Jun 2012, pp.29-36

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(91)

The impact of H$_2$ and N$_2$ on the material properties and secondary electron yield of sputtered amorphous carbon films for anti-multipacting applications / Fernández, H Moreno (CERN) ; Himmerlich, M (CERN) ; Costa Pinto, P (CERN) ; Coroa, J (CERN) ; Sousa, D (Nova U., Lisboa) ; Baris, A (CERN) ; Taborelli, M (CERN)
Amorphous carbon thin films were prepared by direct current hollow cathode sputter deposition in Ar discharge with the injection of small amounts of H$_2$ and/or N$_2$. The influence of these additives on the film properties with particular focus on the application as a coating for electron cloud mitigation in particle accelerators is characterized by optical spectroscopy, X-ray photoelectron spectroscopy, and secondary electron yield (SEY) measurements. [...]
2021 - 10 p. - Published in : Appl. Surf. Sci. 542 (2021) 148552

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(55)

Thin Film Coatings for Suppressing Electron Multipacting in Particle Accelerators / Costa Pinto, P (CERN) ; Calatroni, S (CERN) ; Chiggiato, P (CERN) ; Neupert, H (CERN) ; Shaposhnikova, E N (CERN) ; Taborelli, M (CERN) ; Vollenberg, W (CERN) ; Yin Vallgren, C (CERN)
Thin film coatings are an effective way for suppressing electron multipacting in particle accelerators. For bakeable beam pipes, the TiZrV Non Evaporable Getter (NEG) developed at CERN can provide a Secondary Electron Yield (SEY) of 1.1 after activation at 180oC (24h). [...]
2011 External link: Published version from JACoW
In : 2011 Particle Accelerator Conference, New York City, NY, USA, 28 Mar - 1 Apr 2011, pp.THOBS6

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(53)

The Activation of Non-evaporable Getters Monitored by AES, XPS, SSIMS and Secondary Electron Yield Measurements / Scheuerlein, C
In this thesis the potential of the three classical surface analysis techniques Auger electron spectroscopy (AES), X-ray photoelectron spectroscopy (XPS) and static secondary ion mass spectrometry (SSIMS) for the characterisation of non-evaporable getter (NEG) materials is assessed and artefacts are [...]
CERN-THESIS-2002-026 - Geneva : CERN, 2002. - 73 p.

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(49)

Amorphous carbon thin films: Mechanisms of hydrogen incorporationduring magnetron sputtering and consequences for the secondary electronemission / Adame, C F ; Alves, E (Lisbon, IST) ; Barradas, N P (Lisbon, IST) ; Costa Pinto, P (CERN) ; Delaup, Y (CERN) ; Ferreira, I M M ; Neupert, H (CERN) ; Himmerlich, M (CERN) ; Pfeiffer, S (CERN) ; Rimoldi, M (CERN) et al.
Amorphous carbon (a-C) films, having low secondary electron yield (SEY), are usedat CERN to suppress electron multipacting in the beam pipes of particleaccelerators. It was already demonstrated that hydrogen impurities increase theSEY of a-C films. [...]
2023 - 14 p. - Published in : J. Vac. Sci. Technol. A 41 (2023) 043412 Fulltext: PDF;

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(46)

Low Secondary Electron Yield Carbon Coatings for Electron-cloud Mitigation in Modern Particle Accelerators / Yin Vallgren, Christina (CERN) ; Ashraf, Afshan (CERN) ; Calatroni, Sergio (CERN) ; Chiggiato, Paolo (CERN) ; Costa Pinto, Pedro (CERN) ; Marques, Hugo (CERN) ; Neupert, Holger (CERN) ; Taborelli, Mauro (CERN) ; Vollenberg, Wilhelmus (CERN) ; Wevers, Ivo (CERN) et al.
Electron-cloud is one of the main limitations for particle accelerators with positively charged beams of high intensity and short bunch spacing, as the SPS at CERN. The Secondary Electron Yield (SEY) of the inner surface of the vacuum chamber is the main parameter governing the phenomenon [...]
2010 External link: Published version from JACoW
In : 1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.WEOAMH03

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(42)

Implementation of Carbon Thin Film Coatings in the Super Proton Synchrotron (SPS) for Electron Cloud Mitigation / Costa Pinto, P (CERN) ; Bellunato, A (CERN) ; Basso, T (CERN) ; Edwards, P (CERN) ; Mensi, M (CERN) ; Sublet, A (CERN) ; Taborelli, M (CERN)
Low Secondary Electron Yield (SEY) carbon thin films eradicate electron multipacting in accelerator beam pipes. Two magnetic cells of the SPS were coated with such material and installed. [...]
CERN-ACC-2014-0265.- Geneva : CERN, 2014 - 5 p. Fulltext: PDF; External link: Published version from JaCoW
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.2574

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(39)

Low Secondary Electron Yield Carbon Coatings for Electron Cloud Mitigation in Modern Particle Accelerators / Yin Vallgren, Christina
In order to upgrade the Large Hadron Collider (LHC) performance to be oriented towards higher energies and higher intensities in the future, a series of improvements of the existing LHC injectors is planned to take place over the next few years [...]
CERN-THESIS-2011-063 - Goteborg : Chalmers U. Tech., 2011. - 172 p.

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(35)

Recent Experimental Results on Amorphous Carbon Coatings for Electron Cloud Mitigation / Yin Vallgren, C (CERN) ; Calatroni, S (CERN) ; Chiggiato, P (CERN) ; Costa Pinto, P (CERN) ; Neupert, H (CERN) ; Taborelli, M (CERN) ; Rumolo, G (CERN) ; Shaposhnikova, E (CERN) ; Vollenberg, W (CERN)
Amorphous carbon (a-C) thin films, produced in different coating configurations by using DC magnetron sputtering, have been investigated in laboratory for low secondary electron yield (SEY) applications. [...]
CERN-ATS-2011-192. - 2011. - 8 p.
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The Role of Hydrogen Incorporation into Amorphous Carbon Films in the Change of the Secondary Electron Yield / Bundaleski, Nenad (New Lisbon U.) ; Adame, Carolina F. (New Lisbon U.) ; Alves, Eduardo (IST, Lisbon ; Lisbon U.) ; Barradas, Nuno P. (IST, Lisbon ; Lisbon U.) ; Cerqueira, Maria F. (Minho U.) ; Deuermeier, Jonas (New Lisbon U.) ; Delaup, Yorick ; Ferraria, Ana M. (IST, Lisbon) ; Ferreira, Isabel M.M. (New Lisbon U.) ; Neupert, Holger (CERN) et al.
Over the last few years, there has been increasing interest in the use of amorphous carbon thin films with low secondary electron yield (SEY) to mitigate electron multipacting in particle accelerators and RF devices. Previous works found that the SEY increases with the amount of incorporated hydrogen and correlates with the Tauc gap. [...]
2023 - 20 p. - Published in : Int. J. Molecular Sci. 24 (2023) 12999 Fulltext: PDF;

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