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BaBar: The Detector

This photo series showcases the assembly process of the BaBar detector at Kawasaki, Japan. It includes the Flux Return, Solenoid, Barrel Calorimeter, DIRC, Drift Chamber, Vertex Detector, and Endcap Calorimeter sub-systems.

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BaBar: The Detector

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  1. BaBar:The Detector Richard F Boyce 21 October 2003

  2. The BaBar Flux Return at Kawasaki in Japan

  3. RPC HV and gas lines are hidden behind the corner plates A cross-section showing the BaBar sub systems:Flux Return, Solenoid, Barrel Calorimeter, DIRC, Drift Chamber, Vertex Detector, and the Endcap Calorimeter RPC Layer 18 is trapped behind 2 flux bars

  4. The flux return barrel assembly started with the cradle

  5. Each sextants weighed more than 50 tons and had to be split into two sections

  6. The second section of the bottom sextant is added to the assembly

  7. Notches were HV and gas lines are run This is a picture of the section filled with RPC’s and ready for assembly

  8. Side sextant being assembled

  9. Top sextants being added

  10. Bottom and side sextants assembled Flux bar trapping RPC Layer 18 Notch for HV and gas lines

  11. Arch added to stiffen the structure for earthquake loads

  12. Instrumented Flux Return ready for the other sub systems Earthquake isolators to limit the lateral forces

  13. The superconducting solenoid comes out of the plane

  14. And goes into the barrel

  15. Next add thebarrel calorimeter

  16. The DIRC with its water tank is added at the backward end of the barrel

  17. DIRC water tank which holds photomultiplier tubes

  18. The Drift Chamber is added Bill Sands DriftChamber

  19. This is the Vertex Detector and Final Focus Magnets with the cover off About 15 feet

  20. Top view of the Endcap Calorimeter being added at the forward end

  21. Finished detector with platforms and services

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