1. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS1 Bill Elliott LBNL Presented at the TIS SAFETY REVIEW 13 Dec. 2000 Berkeley,CA brookhaven - fermilab - berkeley US LHC ACCELERATOR PROJECT

2. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS2 ENGINEERING DESIGN TAN - Neutral Absorber TAS - Front Quadrupole Absorber FABRICATION PLAN Sequence of Production SAFETY ISSUES Lifting and Handling Surface Temperatures during Vacuum Bakeout Seismic Stability Radiation IMPLEMENTATION OF SAFETY MoU Engineering Design Review (EDR) Production Readiness Review (PRR) IR ABSORBERS - OVERVIEW

3. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS3 IR ABSORBERS - TAN DESIGN Lower base plate Upper base plate Absorber box Junction box Side shielding (2) Upper shielding Marble Beam tube vacuum chamber Jacks (3) Copper bars Beam tube support bracket The steel shielding is a pinned structure with four through bolts for transport. Through bolt The TAN consists of two major sub-assemblies: - Absorber Box - Steel Shielding.

4. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS4 TAN DESIGN/ENGINEERING SUMMARY - TAN requirements, parameters and interfaces have been defined - Interface and Functional Specifications have been approved by CERN - TAN engineering calculations for tolerances, stress/deflection, bakeout and cooling have been completed. - Drawing details completed and released - Quality control, Acceptance, Fabrication, Procurement plans developed and reviewed at PRR. - FEA thermal model completed to verify analytic calculations

5. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS5 IR ABSORBERS - TAS LOCATION (ATLAS)

6. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS6 TAS ASSEMBLY (EXPLODED) HEATER, THERMOCOUPLES LOWER COPPER CLAMSHELL UPPER COPPER CLAMSHELL COPPER BEAM TUBE 34 mm ID 40 mm ID SUPPORT CRADLE (ASSY ONLY)

7. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS7 TAS requirements, parameters and interfaces have been defined. TAS engineering completed – calculations for tolerances, stress/deflection, bakeout and cooling – 3D Pro-Engineer model – Safety issues documented. Detailed design drawings nearly completed. FEA thermal model needed to check analytic calculations. TAS DESIGN/ENGINEERING SUMMARY

8. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS8 FABRICATION PLAN

9. IR Absorber PRR 02 Nov 2000, LBNL Bill Elliott TAN/TAS ASSEMBLY9 BUILDING 60 Assembly- Stage 4 4 TAN-Base plate 4 TAS- In test Building 60 30 Ton overhead crane Floor load capability Office and Clean room Open floor space

10. IR Absorber PRR 02 Nov 2000, LBNL Bill Elliott TAN/TAS ASSEMBLY10 TAN/TAS SCHEDULE

11. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS11 Lifting and Handling Surface Temperatures during Vacuum Bakeout Seismic Stability These items detailed in LBNL Engineering notes: TAN Safety Note M7090 TAS Safety Note M7905 Radiation: Bill Turner is in contact with Grahm Stevenson SAFETY RELATED DESIGN FEATURES

12. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS12 SAFETY - LIFTING AND HANDLING

13. TAN I.S.- 4.1 Safety Engineered Hoist Rings Configuration: 3 sizes to be used: - Four 11,000 kg rated Hoist Rings for lifting the entire TAN assembly with a spreader beam. - 7,000 kg rated Hoist Rings for lifting the 8 TAN subassemblies. - Two 400 kg rated Hoist Rings for lifting the transport housing

14. TAN I.S.- 4.2 Subassembly Lifting Locations Locations:

15. TAS I.S.- 4. Rigging 4.1 Safety Engineered Hoist Rings - Configuration: - Size: 4200 kg

16. TAS I.S.- 4.2 Subassembly Lifting Locations Locations:

17. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS17 SAFETY - Surface Temps TAN - Operational Bakeout TAS - Operational Bakeout

18. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS18 TAN surface temperature at ultimate luminosity is less than the 57 °C ASTM C-1055 requirement

19. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS19 SAFETY - SEISMIC STABILITY

20. TAN Safety & Lifting IR Absorber EDR 13 July 2000, CERN J.H. Bercovitz TAN Design30 TAN meets CERN seismic requirements as designed, and LBNL seismic requirements with the addition of temporary extra bracing. Shielding surface temperature during bakeout will be approximately 75° C. Temporary personnel barriers will be required to protect against burns. The exposed end of the absorber will be covered by a blanket. Lifting The 30-tonne TAN assembly is to be lifted by four 11000 kg hoist rings from the lower base plate using a spreader bar. The longitudinal clear space under the TAN is 2.4 m, sufficient for the 2.3 m long transfer carriage. Individual TAN components all have masses less than 5000 kg. See LBNL Eng. Note M7909 for details

21. TAN Safety - Seismic IR Absorber EDR 13 July 2000, CERN J.H. Bercovitz TAN Design31

22. TAN Safety - Seismic (cont.) IR Absorber EDR 13 July 2000, CERN J.H. Bercovitz TAN Design22 To overturn in an earthquake, the lateral acceleration must exceed gravity*[(base/2)/height] If the vertical acceleration of the earthquake is.11 g, then the restoring force due to gravity comes from the remaining.89 g. Currently, max. allowable lateral acceleration =.89*200.5/534.2 =.334 g See sketch, above.

23. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS23 Lifting: - The 3200 kg TAS is designed to be lifted with a single 4200 kg rated Hoist Ring. Hoist Ring is to be proof tested to 6300 kg (150% of rated load) and thereafter non- destructive testing is to be performed. Seismic: - LBNL seismic criteria are, greater than CERN criteria so satisfy CERN requirements, and are: 0.70 g horizontal 0.35g vertical TAS - Safety Issues

24. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS24 Seismic continued: - Here the worst case is when the TAS is assembled in the Tas Assembly Fixture with the highest stress condition in the vertical support rods: LoadingStress(MPa) Half the absorber weight 126 Bending load 430 Maximum operational load 556 Additional vertical load due to 0.35g 44 Max. load under seismic conditions 600 Stressproof: Ultimate strength 889 Mpa Safety Factor 1.5 based on ultimate strength TAS - Safety Issues (continued)

25. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS25 BAKEOUT: - During vacuum bakeout the TAS will be held at 200 C for a minimum of 24 hours. At LBNL: The TAS will not be surrounded by shielding, therefore it will be insulated with blankets and personnel barriers will be placed around the bakeout area. At CERN: Barriers need to be erected around the TAS to prevent access to the TAS during bakeout. The surrounding ATLAS shielding will only rise to 35 C and the surrounding CMS shielding will rise to 75 C during a typical 24 hour heatup and 24 hour bakeout cycle. TAS - Safety Issues (continued-2)

26. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS26 Implementation of Safety MoU MoU Milestones Completed: Completed Engineering Reviews: Engineering Design Review: 13 July 2000 Production Readiness Review: 2 Nov. 2000 Planned LBNL Internal Safety Reviews Building 60 Crane: TAN is over Crane rated capacity Vacuum Bakeout : Personnel safety

27. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS27 Engineering Design Review: July 13, 2000 at CERN Design and Engineering of the TAN and TAS presented –Design is Complete, proceed to final details necessary for fabrication –TAN 16 detailed LBNL/CERN action items –Redesign the Pair of Pants transition zone to eliminate the vacuum pumping slots, allow NEG coating –TAS 21 detailed LBNL/CERN action items –LBNL required to build test stand for the jacks/fiducial checkout –Test stand to simulate slopes in the LHC tunnel IR ABSORBERS - Engineering Design Review

28. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS28 DETAILS PRESENTED PROCUREMENT PLAN –Internal and external fabrications, vacuum beam tube methodology FABRICATION PLAN –LBNL site location, Lead technician, Testing resources, Alignment resources RESOURCE LOADED SCHEDULE ACCEPTANCE PLAN QA PLAN PROPOSED ENGINEERING DOCUMENT FILE The Production Readiness Review (PRR) for the IR ABSORBERS was held on 2 Nov. 2000

29. TIS Review 13 Dec. 2000 Bill Elliott IR ABSORBER STATUS29 PRR RECOMMENDATIONS: Fabricate a first article TAN vacuum chamber ASAP Schedule a Pre-Assembly Review in March‘01 before start of assembly –Final checkout of QA and Acceptance plan Logistics –Develop a logistics plan for tracking parts –Consider additional staff for logistics tracking, QC/QA work Schedule –Examine a 1+3 production method instead of 4 units in parallel –Incorporate resource constraints into schedule (30 ton crane, test equipment, floor space, technicians) IR ABSORBERS - PRODUCTION PLAN