1. 1st LTEX 22 June 2009D.LACARRERE1 Protection of UX85 EDMS No 1005700 IP8 Current Status & Plans  UX85 Expt Area  RB84 (8-7 sector)  RB86 (8-1 sector)  Works to be done  Remarks 15 June 2009

2. 1st LTEX 22 June 2009D.LACARRERE2 Pit 8 – LHCb - UX85 Area ACCESS PERSONNEL PM SHAFT UXA IP8 ACCESS EQUIPMENT PX SHAFT RADIATION SHIELD UXCUXB Access - Checking Personnel & Materials UXA – LHCb Protected Area UXB – LHCb Detector Area UXC – LHC Cryogenics Accessible Area when LHC operates BEAM 2 BEAM 1 POINT 1 (ATLAS) ACCESS PERSONNEL PZ SHAFT UX85 CAVERN RB86 RB84 SHIELDING PLUGS FIG. 1 UJX Gallery

3. 1st LTEX 22 June 2009D.LACARRERE3 Shielding Plug – RB84 Area 2200 REF. : Document edms no 38083 FIG. 2 Beam Axis IP8 10400 FeConcrete 8001200800 Air flux holes

4. 1st LTEX 22 June 2009D.LACARRERE4 RB84 - Segmentation (reminder) January 2008 Mobile door Concrete blocks Aperture for survey View from LHC tunnel FIG. 3

5. 1st LTEX 22 June 2009D.LACARRERE5 August 2008 Air tightness – First Improvements (August 08) Metallic joints View from LHC tunnel FIG. 4

6. 1st LTEX 22 June 2009D.LACARRERE6 18 June 2009 FIG. 5 RB84 side - Current Status (June 09) - Joints filled with PUR - Joints sealed with concrete - Painting

7. 1st LTEX 22 June 2009D.LACARRERE7 Aluminium Cover Sheets Al sheet removable FIG. 6 Al sheets removable View from LHC tunnel Al sheets fixed to tunnel Additional Improvements (?) (not yet decided) Installation of Al cover sheets

8. 1st LTEX 22 June 2009D.LACARRERE8 19900 from IP8 FIG. 7 Beam Axis 24622 from IP8 FeConcrete REF. : Document edms no 38083 1200800 RB86 Area - Improvement Tightness MF4

9. 1st LTEX 22 June 2009D.LACARRERE9 Hole 800 x 800 mm2 MF4 – Central Part NO ACTION FIG. 8

10. 1st LTEX 22 June 2009D.LACARRERE10 Joint PUR + concrete Metallic sheets (Al 8 mm thick) Joints & Metallic sheets FIG. 9

11. 1st LTEX 22 June 2009D.LACARRERE11 Holes in the chicane PROPOSED ACTIONS 1 - STRENTHEN SECTOR DOOR 2 – FILL HOLE DEDICATED TO SURVEY PIPE

12. 1st LTEX 22 June 2009D.LACARRERE12 False floor in the chicane ADDITIONAL CONCRETE BRICKS IN THE FALSE FLOOR

13. 1st LTEX 22 June 2009D.LACARRERE13 RB84 Side - Mechanical stability of the 1 st concrete shield (front of VELO) to be checked with a pressure of 40 mbar. Calculations has been performed by J.C. Batista Lopes DG-SC edms 1005362/1 19 June 2009) – Conclusion : Good stability up to pressure 75 mbar – sliding of upper part - Installation of aluminium cover sheets (LHC tunnel side) - Work scheduled fro week 26 RB86 Side - All main joints (MF4) will be filled with PUR or plastic seal (in particular small gaps) + special concrete (repair cement) + cover sheets. - Strengthen of the sector door (?). But how. - Cover the cryo-line with aluminium sheets (8-10 mm thick) - Work scheduled for wks 30 – 31 Summary – Main Works on going

14. 1st LTEX 22 June 2009D.LACARRERE14 Remarks UJX Tunnel (from UJ87 up to PX shaft) - Mechanical stability of the wall between tunnel & UJX to be checked with a pressure of 40 mbar. Contact with GS-CE Group US85/UX85 - Wall between US85 & UX85 is made of “SIPOREX” concrete (20 cm thick) Mechanical stability to be check (?) BUDGET & COORDINATION - Budget code to be used ? Machine side ? - How to proceed ? - Coordination on site – Who ?

15. 1st LTEX 22 June 2009D.LACARRERE15