1. Progress with Experimental Vacuum Chambers
Introduction
ATLAS
CMS
LHCb
Summary
Additional Projects
Projects Website

2. Introduction
Why? Improvements to the LHC Experimental Vacuum sectors of ALICE, ATLAS, CMS, LHCb
Critical spares
New chambers and supports to minimise activation and background
New chambers and supports for new detectors
How?
Organised into Work Package documents (presented by R.Veness Oct 2010)
Work packages recently updated – pending approval
When?
Split into three long shutdowns in 2013, 2017 and 2022

3. ATLAS VI VA VT VJ
TAS
IP1

4. New VI chamber New VI Chamber (for new detector)
45 mm ID, 7.3 m long, beryllium chamber
Quotation received ($1.1M)
Targeted completion July 2012
Optimised Demountable Flange Design
Demountable flange designed by N.Kos based on similar working design – to be tested

5. New VA Chamber Aluminium for ALARA and transparency
45 to 58 mm ID chamber in aluminium 2219 material
Bellows manufactured and available
Aluminium ion pump in first stages of testing – results expected end May 2011
Targeted completion December 2011
Picture: P.Lepeule
Alu Ion pump
Aluminium chamber
Aluminium Bellows
Picture: C.Garion

6. New VT chamber Aluminium for ALARA and transparency
58 to 80 mm ID chamber in aluminium 2219
Aluminium material delivery May 2011
Targeted completion December 2011

7. CMS
Endcap Pipe
CT2 HF
Central Pipe
IP5

8. CMS Endcap Pipe Spare Manufacture complete
Vacuum acceptance test complete
NEG coating scheduled July 2011 for completion August 2011
Picture: P.Lepeule

9. Study of opening CMS under vacuum
Preliminary study completed end 2010
Detailed study complete April 2011
Report and conclusions in preparation for July 2011
Pictures: J.Bosch

10. LHCb
UX85 2&3 supports
UX85/3
UX85/4
IP8

11. UX85/3 Replacement Chamber
First segment beryllium-beryllium EB weld cracked
Weekly teleconference with supplier to resolve issue
Delivery estimate August 2011
Picture: Brush Wellman

12. Optimised UX85/2&3 supports
Requirement for eight flexible and eight rigid supports total
Testing started on flexible composite supports
Testing will start on rigid supports July 2011
Complete assemblies targeted for December 2011
Picture: L.Leduc

13. Jonathan Bosch, Paul Cruikshank, John Gallagher, Cedric Garion,
Project Summary
WP Number
Description
Due
Delivery
AT 2.2.1
Optimised Flange
Nov 11
Aug 11
AT 2.2.2
ATLAS VI
July 12
AT 2.2.3
ATLAS VA
Dec 11
AT 2.2.4
ATLAS VT
CM 2.1.1
Endcap chamber
Dec 10
CM 2.1.3
Study
July 11
LB 2.1.1
New UX85/3
LB 2.2.1
Optimised supports
Reliant on supplier
Acknowledgements
Jonathan Bosch, Paul Cruikshank, John Gallagher, Cedric Garion,
Hendrik Kos, Nicolas Kos, Louise Leduc, Patrick Lepeule, Nicolas Provot, Herve Rambeau, Gerhard Schneider, Raymond Veness

14. Additional Requested Projects
Shutdown extended and moved to 2013/2014
New CMS central chamber (moved from LS2 to LS1)
New ATLAS VI beryllium chamber (moved from LS2 to LS1)
New 45 mm minimised flange for ATLAS VI
Design study of support installation for Radiation Protection - requested by ATLAS
New spare chamber solution for ATLAS and CMS
LHCb spare aluminium bellows

15. Projects Website
New Sharepoint site with up-to-date information on all Work Packages