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Beam Pipe Support

Beam Pipe Support Structure (BPSS) Interface and Assembly Final Design Review, April 2003 E. Anderssen, N. Hartman LBNL. Beam Pipe Support. Schematic of Beampipe, Support Structure, and Pixel Package in ID. Z=~3200 – Bellows/Temp. Support. Z=3120 – Adjustors. Z=848 – Wire Support.

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Beam Pipe Support

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  1. Beam Pipe Support Structure (BPSS)Interface and AssemblyFinal Design Review, April 2003 E. Anderssen, N. Hartman LBNL

  2. Beam Pipe Support Schematic of Beampipe, Support Structure, and Pixel Package in ID Z=~3200 – Bellows/Temp. Support Z=3120 – Adjustors Z=848 – Wire Support Z=3092 – PP1 TRT Forward TRT Forward SCT Barrel Services and Beam Pipe Support Structure Services and Beam Pipe Support Structure Pixel Detector Side C Side A Beam Pipe Support Wire Beam Pipe ID Endplug Insertion Trolley PP1 Pixel Support Tube PST Support Flexures Package Insertion Riders PP1 Bellows/Temporary Support

  3. “Package” Beam Pipe Support Structure Pixel Detector Not Shown Beam Pipe Beam Pipe Support Structure Service Panels

  4. Rails

  5. Service Quarter Panel structure carries Disk and Barrel panels as well as PP1 quarter panel on same structure Disk panels not shown—current designs being modified Tubes not shown as well—both available at June Review Service Quarter Panel

  6. Routing for PP1 dominates the volume at the end of the Package The routing is not complete, but is intended for Review in June Bellows design to couple PP1 to Beam Pipe is ‘Complete’ implies ~73N compressive load on Beam Pipe during Bakeout. Uses Large Convolution depth, but relatively short length Dimensions open to discussion, based on acceptable loads (can increase length/convolution depth ratios to suit acceptable load and internal clearances PP1 Routing

  7. Patch Panel One PP1 layout determines final length of the Forward section of the PST—Layout of region is progressing and being modelled—in time for June (only just)

  8. Survey access is poorly understood now Hope to reduce some occupancy of PP1 fittings Bellows design exists, can be optimized for possible access Internal volume of BPSS is not a limit as will be seen in later slides Non conventional options for survey will likely be needed Temporary support of Beam Pipe is from ‘Can’ installed on inner radius of PP1 PP1 Interface to Adjustors Quarter Panel Breaks Fixation of service structure to PP1

  9. PP0 is not technically an interface to Beam Pipe but is a critical interface to BPSS Disk/B-Layer panels under revision currently—not shown Trolley is designed to allow for cooling tubes which are also installed with Service Quarter Panels Note—PP1 quarter panels are fixed to the Service Quarter Panels and are installed with them This is important at a later stage where PP1 will support the Beam Pipe PP0 End of Frame

  10. Wheels and driving system Dual V Rail System U Supports Support Frame B-Layer Cart Pixel package Overview • The Pixel package is first integrated on surface into an Integration & Testing Tool (ITT) and then slid into a Dummy Support Tube (DST) • the DST in then lowered into the pit in a cradle, connected and aligned to the PST and the pixel system is moved to its final position • The Beampipe is the first article installed in the ITT

  11. Pixel Assembly Beampipe temporarily held with auxiliary supports “U-Supports” on installation and testing tool - ITT

  12. Pixel Assembly Beampipe support transferred to support frames—see comments Following slides

  13. Beampipe Support Frame 2 Frames – 1 A Side, 1 C Side Single Frame Shown Here 4 Support Wires, 1 Support Plane Wire Adjustors Longerons Service panel Attachment points Reinforcing Longerons, Attach Points to PP1 Fixed Adjustors (no spring) Top and Side Wires at Z=-848,+848 Sprung Adjustors Side and bottom (tension limiters) Cruciform supports

  14. Beam Pipe Collars Aerogel Insulation Wire Anchor Point Kapton Heater Split Conical Ring Allows Free Placement in Z

  15. Access to wires prior to Service Panel installation is excellent Service Panels installed after the wires are routed through tubes Wires then inserted through adjustors at end of longerons Access to wires during Assembly Longerons

  16. Assembly of Adjustor/Limiter Unit Tension Limiter Assembled, Spring Compressed Wire Fed Through, Clamped into Collet Wire Adjustor Seated in Tension Limiter Max “IN” Adjustment Max “OUT” Adjustment

  17. Adjustor/Tension Limiter Wire Guide Preload Adjustor Barrel Wire Wire Adjustor Nut Tension Limiter Plunger Wire Collet & Nut Limiter Spring Wire Adjustor Screw

  18. Service Panels Are Added to top of package Bottom of package has limited access due to ITT support structure Note that half of PP1 is assembled at this stage, and can be fastened together Temporary support via PP1 is possible at this stage Assembly Continued—Services Added

  19. Bottom services can be installed Note—this picture shows direct bottom, Package can rotate only 90 degrees plus a little in the ITT At this stage it is required to have temporary supports of Beam Pipe installed to allow for this rotation Bottom Services Installed

  20. This shows some detail of how panels are supported to provide adequate support for the temporary support Note that PP1 is threaded over Adjustors during installation Panel Installation Detail

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