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Development and production of Non Evaporable Getter coatings for the vacuum chambers of the 3 GeV storage ring of MAX IV

Pinto, P. Costa ; Bartova, B. ; Holliger, B. ; Dos Santos, S. D Marques ; Nistor, V. ; Sapountzis, A. ; Taborelli, M. ; Wevers, I. ; Ahlbäck, J. LU and Al Dmour, E. LU , et al. (2015) 6th International Particle Accelerator Conference, IPAC 2015 p.3145-3147
Abstract

MAX IV is presently under construction at Lund, Sweden, and the first beam for the production of synchrotron radiation is expected to circulate in 2016. The whole set of 3 GeV ring beam pipes is coated with Ti-Zr-V Non Evaporable Getter (NEG) thin film in order to fulfil the average pressure requirement of 1×10-9 mbar, despite the compact magnet layout and the large aspect ratio of the vacuum chambers. In this work, we present the optimizations of the coating process performed at CERN to coat different geometries and mechanical assembling used for the MAX IV vacuum chambers; the morphology of the thin films is analysed by Scanning Electron Microscopy; the composition and thickness is measured by Energy Dispersive X-ray analysis; the... (More)

MAX IV is presently under construction at Lund, Sweden, and the first beam for the production of synchrotron radiation is expected to circulate in 2016. The whole set of 3 GeV ring beam pipes is coated with Ti-Zr-V Non Evaporable Getter (NEG) thin film in order to fulfil the average pressure requirement of 1×10-9 mbar, despite the compact magnet layout and the large aspect ratio of the vacuum chambers. In this work, we present the optimizations of the coating process performed at CERN to coat different geometries and mechanical assembling used for the MAX IV vacuum chambers; the morphology of the thin films is analysed by Scanning Electron Microscopy; the composition and thickness is measured by Energy Dispersive X-ray analysis; the activation of the NEG thin film is monitored by X-ray Photoemission Spectroscopy; the vacuum performance of the coated beam pipes is evaluated by the measurement of hydrogen sticking coefficient. The results of the coating production characterization for the 84 units coated at CERN are presented.

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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
6th International Particle Accelerator Conference, IPAC 2015
pages
3 pages
publisher
JACoW Publishing
conference name
6th International Particle Accelerator Conference, IPAC 2015
conference location
Richmond, United States
conference dates
2015-05-03 - 2015-05-08
external identifiers
  • scopus:84994613941
ISBN
9783954501687
language
English
LU publication?
yes
id
8b51ff30-834d-4001-b2fa-138b43484669
date added to LUP
2017-02-16 15:20:06
date last changed
2022-04-16 23:35:35
@inproceedings{8b51ff30-834d-4001-b2fa-138b43484669,
  abstract     = {{<p>MAX IV is presently under construction at Lund, Sweden, and the first beam for the production of synchrotron radiation is expected to circulate in 2016. The whole set of 3 GeV ring beam pipes is coated with Ti-Zr-V Non Evaporable Getter (NEG) thin film in order to fulfil the average pressure requirement of 1×10-9 mbar, despite the compact magnet layout and the large aspect ratio of the vacuum chambers. In this work, we present the optimizations of the coating process performed at CERN to coat different geometries and mechanical assembling used for the MAX IV vacuum chambers; the morphology of the thin films is analysed by Scanning Electron Microscopy; the composition and thickness is measured by Energy Dispersive X-ray analysis; the activation of the NEG thin film is monitored by X-ray Photoemission Spectroscopy; the vacuum performance of the coated beam pipes is evaluated by the measurement of hydrogen sticking coefficient. The results of the coating production characterization for the 84 units coated at CERN are presented.</p>}},
  author       = {{Pinto, P. Costa and Bartova, B. and Holliger, B. and Dos Santos, S. D Marques and Nistor, V. and Sapountzis, A. and Taborelli, M. and Wevers, I. and Ahlbäck, J. and Al Dmour, E. and Grabski, M. and Pasquino, C.}},
  booktitle    = {{6th International Particle Accelerator Conference, IPAC 2015}},
  isbn         = {{9783954501687}},
  language     = {{eng}},
  pages        = {{3145--3147}},
  publisher    = {{JACoW Publishing}},
  title        = {{Development and production of Non Evaporable Getter coatings for the vacuum chambers of the 3 GeV storage ring of MAX IV}},
  year         = {{2015}},
}