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Final Design Presentation of ER Bundles at INFN Milano Meeting

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During the nSQP meeting on July 14, 2011, I presented the assumed "final design" of the ER bundles, noting key caveats. Transmission properties were not covered, and the complete system test involving all components is still pending. The design is regarded as final, contingent upon successful system test outcomes. Key aspects include mechanics for connectors, shielding options (tin copper and carbon), and assembly procedures. Progress includes connector board assembly and confirmation of materials for braids and shells. Future steps involve production and assembly after the holiday period.

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Final Design Presentation of ER Bundles at INFN Milano Meeting

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  1. ER Bundle “final” design D. Giugni / INFN Milano 2011-07-14 nSQP's meeting

  2. Assumption • I am going to present what I would call “final design” of the ER bundles... with some caveats: • The transmission properties of the data line are not covered here. We cannot say that it is fully qualify. A “system” test with all the parts (E-board, ER Bundle, Optoboard) has not been done yet. • I assume hereafter that it is or, it will be, ok. Therefore the design is “final” if the system test will show good results. • If it is true, then the design is really final: • Wires, boards, connectors • Mechanics: connector shells, strain releases, assembly procedures • Shielding (*) and grounding. • (*) There are still two options for the shielding braids: tin copper and carbon. It does not affect the design nor the fabrication procedure 2011-07-14 nSQP's meeting

  3. Details from PP0 to Opto-box 2011-07-14 nSQP's meeting

  4. Details at PP0 2011-07-14 nSQP's meeting

  5. Details at PP1 KEVLAR Braid KEVLAR Braid + Drain wire Tin Cu/ C fiber + AWG 28 Tin Cu drain PP1 End Plate Silicon feed through MYLAR Foil Heat shrinkable tubing NOMEX Braid MWS Wires  “Outside” to Optobox “Inside” to PP0  2011-07-14 nSQP's meeting

  6. Details of the Connector Shell (5um Ti/Ni coating) Drain Wire Heat Shrinkable tubing Brass Ferule Brass Hollow Plate KEVLAR Braid Cu/ C Braid MWS Wires 2011-07-14 nSQP's meeting

  7. Connector Board assembly Silder Heat Shrinkable tubing Ferule Drain Wire Tin Cu Braid KEVLAR Braid Connector Shell (not Coated here) Hollow Brass Plate 2011-07-14 nSQP's meeting

  8. Connector Shell Sputtering • Sputtering seems to be ok. • Tested 2um Ti coating • Good adhesion • Next layer can be ~3um Cu or Ni Ni preferred (by me) Total coautingth. ~5um • Fast an almost inexpensive 2um Ti spattered Uncoated SLA shell 2011-07-14 nSQP's meeting

  9. D-bundle production plan • Re-spin the Cable and D/B Connector board. Some already in hands. Need to load with connectors and capacitors • Re-spin the production of the new shells (both D&B type) • Spattering available. • All braids (NOMEX, KEVLAR, Cu and Carbon fiber) in hands • Silicon casting available at CERN and ready to go. Can assemble 14 D-ER Bundles with all the final parts... however we are in a vacation period. • 10 bundles with Ti Cu braid • 4 Bundles with CF braid. 2011-07-14 nSQP's meeting

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