Surface conditioning for ultra-high vacuum
Brokering Meeting Daresbury Laboratory, Warrington
Wednesday 25th February 2009
The production and maintenance of ultra high vacuum is an important underpinning technology for many scientific and industrial applications such as particle accelerators, surface science, semiconductor research and industry, superconducting magnets, cryogenic vessels, analytical instruments and many others. Residual gas pressure is defined by outgassing from the vacuum chamber surface and by pumping efficiency. Over recent years, significant progress was made through research in surface conditioning and the development of coatings for UHV surfaces.
This event was the result of a collaboration between the Science and Technology Facilities Council (STFC), CERN and the Accelerator Science and Technology Centre (ASTeC), based at Daresbury. It brought together representatives from industry, academia and the public sector. Held at Daresbury Laboratory, the UK leading centre of expertise in vacuum technologies, the event provided a valuable networking opportunity for researchers and industrialists.
Technical presentations were divided into three sections and addressed theoretical and practical aspects of UHV related problems such as outgassing and secondary electron yield and ways of addressing those problems. Paolo Chiggiato of CERN, Oleg Malyshev and Reza Valizadeh covered Non-Evaporable Getter (NEG) coatings and UHV applications for NEG in great detail. LHC is the first large scale implementation of NEG which should stimulate its adoption by industry. John Colligon of Manchester Metropolitan University covered other coatings for UHV in his talk and there were several talks describing methods of surface treatment for UHV applications.
The event proved popular and was over-subscribed, with an attendance of fifty people on the day. There were also a number of exhibitors (8 companies), who brought equipment and posters to display.
The talks generated a lot of interest and stimulated discussions during networking time and there was also the opportunity for delegates to tour to the Daresbury Laboratory vacuum facilities.
For more information about this event and knowledge exchange support from STFC please contact Penny Woodman
Programme
| Time |
Programme |
Speaker |
| 10:00 - 10:30 |
Registration and coffee |
| 10:30 - 10:40 |
Welcome from STFC and Introduction |
Mrs Penny Woodman (PDF - 193kB - link opens in a new window), STFC |
| 10:40 - 11:00 |
Outgassing from the walls of a vacuum vessel and strategies for reducing it |
Dr. Ron Reid (PDF - 162kB - link opens in a new window), ASTeC Vacuum Science Group, DL |
| 11:00 - 11:20 |
From NEG strips to Ti-Zr-V coated accelerator vacuum chambers |
Paolo Chiggiato, CERN |
| 11:20 - 11:40 |
Coffee break |
| 11:40 - 12:00 |
Design of large vacuum systems and NEG coatings |
Dr. O.B. Malyshev (PDF - 1506kB - link opens in a new window), ASTeC Vacuum Science Group, DL |
| 12:00 - 12:20 |
Surface coatings |
Prof. John Colligon, MMU |
| 12:20 - 12:40 |
Surface science view on NEG coatings |
Dr. Reza Valizadeh (PDF - 7038kB - link opens in a new window), MMU |
| 12:40 - 14:00 |
Working lunch/Discussion/a short tour to the Vacuum Science Laboratory with an opportunity to see the installation for NEG deposition and evaluation |
| 14:00 - 14:20 |
Cleaning Agents for UHV use |
Dr. Keith Middleman (PDF - 914kB - link opens in a new window), ASTeC |
| 14:20 - 14:40 |
Low Temperature Air Baking of Stainless Steel for Very Low Outgassing Rates |
Dr. Roger Bennett (PDF - 152kB - link opens in a new window), RAL |
| 14:40 - 15:00 |
NEG commercialisation status at CERN |
Dr Hartmut Hillemans (PDF - 833kB - link opens in a new window), CERN TT |
| 15:00 - 15:10 |
STFC support for collaborative partnerships and routes to funding |
Alex Efimov (PDF - 89kB - link opens in a new window), STFC |
| 15:10 |
Refreshments, Networking Time |
Page last updated: 12 November 2009
by Andi Kidd
