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

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 D. Giugni2011-07-14 nSQP's meeting2

3. Details from PP0 to Opto-box D. Giugni2011-07-14 nSQP's meeting3

4. Details at PP0 D. Giugni2011-07-14 nSQP's meeting4

5. Details at PP1 D. Giugni2011-07-14 nSQP's meeting5 PP1 End Plate Silicon feed through Heat shrinkable tubing NOMEX Braid KEVLAR Braid Tin Cu/ C fiber + AWG 28 Tin Cu drain MYLAR Foil MWS Wires KEVLAR Braid + Drain wire  “Outside” to Optobox“Inside” to PP0 

6. Details of the Connector D. Giugni2011-07-14 nSQP's meeting6 KEVLAR Braid Heat Shrinkable tubing Cu/ C Braid Brass Hollow Plate Brass Ferule MWS Wires Drain Wire Shell (5um Ti/Ni coating)

7. Connector Board assembly D. Giugni2011-07-14 nSQP's meeting7 Tin Cu Braid Heat Shrinkable tubing KEVLAR Braid Ferule Hollow Brass Plate Silder Drain Wire Connector Shell (not Coated here)

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 coauting th. ~5um Fast an almost inexpensive D. Giugni2011-07-14 nSQP's meeting8 Uncoated SLA shell 2um Ti spattered

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. D. Giugni2011-07-14 nSQP's meeting9