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ER Bundle “final” design. D. Giugni / INFN Milano. Assumption. I am going to present what I would call “final design” of the ER bundles... w ith some caveats: The transmission properties of the data line are not covered here. We cannot say that it is fully qualify. - PowerPoint PPT Presentation
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nSQP’s
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
D. Giugni
nSQP’s
2011-07-14 nSQP's meeting 5
Details at PP1
D. Giugni
PP1 End Plate
Silicon feed through
Heat shrinkable tubingNOMEX 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
nSQP’s
2011-07-14 nSQP's meeting 6
Details of the Connector
D. Giugni
KEVLAR Braid
Heat Shrinkable tubing
Cu/ C Braid
Brass Hollow Plate Brass Ferule
MWS Wires
Drain Wire
Shell(5um Ti/Ni coating)
nSQP’s
7
Connector Board assembly
D. Giugni 2011-07-14 nSQP's meeting
Tin Cu Braid
Heat Shrinkable
tubing
KEVLAR Braid
Ferule
Hollow Brass Plate
Silder
Drain Wire
Connector Shell
(not Coated here)
nSQP’s
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 coauting th. ~5um
• Fast an almost inexpensive
D. Giugni
Uncoated SLA shell
2um Ti spattered
nSQP’s
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.
D. Giugni