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BaBar Disassembly and Disposal Overview

BaBar Disassembly and Disposal Overview. BaBar Detector. E lectro m agnetic C alorimeter 6580 CsI(Tl) crystals. 1.5 T Solenoid. e + (3.1 GeV). Cerenkov Detector (DIRC) 144 quartz bars 11000 PMTs. e - (9 GeV). D rift Ch amber 40 stereo layers. I nstrumented F lux R eturn

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BaBar Disassembly and Disposal Overview

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  1. BaBar Disassembly and Disposal Overview Bill Wisniewski

  2. BaBar Detector Electromagnetic Calorimeter 6580 CsI(Tl) crystals 1.5 T Solenoid e+ (3.1 GeV) Cerenkov Detector (DIRC) 144 quartz bars 11000 PMTs e- (9 GeV) Drift Chamber 40 stereo layers Instrumented Flux Return iron/RPCs (muon/neutral hadrons) Silicon Vertex Tracker 5 layers, double sided strips Bill Wisniewski

  3. BaBar Detector ‘Ideal’ Bill Wisniewski

  4. BaBar Detector ‘Actual’ Shield wall removed Bill Wisniewski

  5. BaBar Detector Disassembly • BaBar completed the IFR upgrade in Fall 2006. This upgrade took place over three campaigns: IFR Forward Endcap Resistive Plate Chambers in 2002, 1st third of IFR Barrel Limited Streamer Tubes in 2004, balance of IFR Barrel sextants with LSTs in 2006. • Barrel upgrade required uncabling of forward end of SVT, forward end of EMC, load transfer of EMC, removal of most of the corner blocks fore and aft, removal of flux bars, releasing some of the cryostat restraints, pulling forward doors to walls. • Experience gained in these campaigns plus experience from the initial detector assembly provide excellent input for planning the detector disassembly process, estimating the required manpower (both labor and engineering), as well as M&S. Bill Wisniewski

  6. Project Schedule • 51 months duration • Assumptions • Project start date July 1, 2008 • Dismantling tasks performed sequentially • Tooling refurbishment performed in parallel at IR-12 • Can be optimized with additional work crews • Experienced supervision may not exist for multiple crews • Use of personnel knowledgeable in the disassembly of BaBar • Items hauled away are assumed to be trash • Ending location TBD • Metals are stored due to metals moratorium • Location TBD Bill Wisniewski

  7. Concrete Radiation Shield Wall Bill Wisniewski

  8. IFR Background Shield Wall Bill Wisniewski

  9. SVT & PEP Support Tube Installation Bill Wisniewski

  10. Silican Vertex Tracker (SVT) Bill Wisniewski

  11. Silican Vertex Tracker (SVT) • The SVT Detector and the PEP Support Tube are a married assembly • This system was extracted from BaBar in 2002 • Removed from the forward end on beamline • A detailed project plan exists including schedule and resource estimates • Extraction/insertion tooling exists in good working condition Bill Wisniewski

  12. Drift Chamber Bill Wisniewski

  13. Drift Chamber • Supported by the DIRC Central Support Tube • Removed from the forward end in main disassembly area • It is assumed that the Drift Chamber will end up on display at a lab or university • If disposed of: • Beryllium inner tube • Gold plated wires • Gas system racks • Reusable items • Most items considered obsolete • Extraction tooling exists – Somewhat scattered • Good condition (stored inside) • Needs to be gathered to one location Bill Wisniewski

  14. DIRC Bill Wisniewski

  15. DIRC Central/Strong Support Tube Assembly Bill Wisniewski

  16. Bill Wisniewski

  17. DIRC Magnetic Shield Cylinder Bill Wisniewski

  18. DIRC • Major detector components • Stand off box with 11,000 phototubes • Quartz Bar Boxes • Central/Strong Support Tube with Horsecollar and Magnet Bucking Coil • DIRC Magnetic Shield • All major components removed from backward end in main disassembly area • Reusable items • Quartz bars. DIRC support tube. • Magnet Bucking Coil • Most extraction equipment exists • Good condition (stored inside) Bill Wisniewski

  19. End Cap Calorimeter Forward Endcap Bill Wisniewski

  20. End Cap Calorimeter • All major components removed from forward end in main disassembly area • Ship to IR-12 for final disassembly • Reusable items • Crystals • Stored in humidity control container • Some with heavier radiation damage • Most extraction equipment exists • Good Condition • Items stored inside but somewhat scattered • Some items will need to be replaced Bill Wisniewski

  21. Barrel Electromagnetic Calorimeter Bill Wisniewski

  22. Barrel Electromagnetic Calorimeter • Removed from forward end in main disassembly area • Ship to IR-12 for final disassembly • Reusable items • Crystals in structure • Control humidity and temperature • Most extraction equipment exists • Condition varies • Some items stored inside • Large items stored outside • Items are somewhat scattered • Some items will need to be replaced Bill Wisniewski

  23. BaBar Magnet System Bill Wisniewski

  24. Magnet Valve Box With Current Leads Bill Wisniewski

  25. IR-2 Helium Liquefier Bill Wisniewski

  26. BaBar Magnet System • Solenoid is removed from backward side in main assembly area • Uses EMC extraction beam assembly with magnet-specific tooling • Most extraction equipment exists • Stored outside • Needs refurbishment • Reusable items • Solenoid and Valve Box • Power Supply plus spare • Helium Liquefier and controls • LN2 Dewar Bill Wisniewski

  27. Instrumented Flux Return (LSTs) Barrel Bill Wisniewski

  28. Instrumented Flux Return • Limited Streamer Tubes (LSTs) • Removed from detector on beam line • Most extraction equipment exists in good condition • Will be stored for possible future application • Storage crates available from LCLS • 75 tons of brass absorber plates • Removed from detector on beam line • Most extraction equipment exists • Needs refurbishment Bill Wisniewski

  29. Instrumented Flux ReturnBackward End Door RPCs Bill Wisniewski

  30. Instrumented Flux Return (RPCs) End Door Bill Wisniewski

  31. Instrumented Flux Return (RPCs) • Resistive Plate Chambers (RPCs) • Barrel • 6 RPCs in Barrel (Layer 19) • Approx 250 lbs each • Must disassemble barrel steel and support structure to remove these chambers • Forward End Doors • 16 layers, 3 modules high, both east and west • 96 total chambers • Approx. 150 lbs each • Removed from detector on beam line • RPCs shall be disposed of • Backward End Doors • 18 layers, 3 modules high, both east and west • 108 total chambers • Approx. 150 lbs each • Removed from detector on beam line • Most extraction equipment exists • Needs some refurbishment • 30 tons of brass absorber plates (FWD End Door) • Removed from detector on beam line • Most extraction equipment exists • Needs refurbishment Bill Wisniewski

  32. Barrel Flux Return Bill Wisniewski

  33. Barrel Flux Return Disassembly Bill Wisniewski

  34. End Door Flux Return Bill Wisniewski

  35. Flux Return • 962 tons of steel (not including end plugs) • Heaviest items 46.2 tons • Disassembled in main disassembly area • Most tooling exists • Needs refurbishment (stored outside) • Some new tooling needed for safety reasons • Affected by metals moratorium Bill Wisniewski

  36. Moving the Detector Off Beam Line Bill Wisniewski

  37. Miscellaneous Stairs & Walkways Bill Wisniewski

  38. West Detector Platform Electronics Racks Bill Wisniewski

  39. BaBar Electronics House Bill Wisniewski

  40. BaBar Electronics House – First Floor Bill Wisniewski

  41. Building 636 (BaBar Gas Shack) Bill Wisniewski

  42. Chiller Land Bill Wisniewski

  43. Bill Wisniewski

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