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TKR Flex Cable Issues addressed . Mechanical Grid – Flex Cable Interface CTE mismatch Tower – Grid (introduce loop) Cable – Wall interference: move resistors Cactus arm resistors on wall side, all other on TEM side Cable – TEM interface (take out loop)

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TKR Flex Cable Issues addressed


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tkr flex cable issues addressed
TKR Flex Cable Issues addressed

Mechanical

  • Grid – Flex Cable Interface
  • CTE mismatch Tower – Grid (introduce loop)
  • Cable – Wall interference: move resistors
    • Cactus arm resistors on wall side, all other on TEM side
  • Cable – TEM interface (take out loop)
  • Stiffener at D connectors (TEM side) see below
  • Assembly Procedure (NO pre-bend, but needs more meat)
  • Bend Tool for Cactus arms (existence proof only)

Electrical

  • Doubling Vias
  • Via Stay-clear in Bend Area
  • Resistors to Improve GTRC margins (out)
  • Resistors to Improve Polyswitch Functioning (in)
docs for c0 proto flight order
Docs for C0 Proto Flight Order

LAT-DS-02049-05 Flex-circuit Cable Schematic Diagram

LAT-DS-00584-08 Flex-circuit C-0 Mechanical Layout

LAT-DS-02377-02 Tracker Tower Flex-circuit Cable C-0 Assembly

LAT-DS-00334-03 Gerber Files for Flex-circuit C-0

LAT-DS-03031-01 TKR Flex cable Stiffener

LAT-TD-xxxx Assembly Process for Proto-flight Tracker Flex Cable Nano Connectors

Numbers to order 11 assembled, 3 bare:

Assembled

(8 + 1 spare) = 9 INFN for Tower Testing

2 DAQ

Bare (delivery when fab’d) :

3 SLAC

to be done
To be Done

Coordination: Jerry Clinton, Parts: Jeff Tice

Mechanical Layout: Tim O’Heron, Electrical Layout: Dave Nelson

  • C0:
    • draw LAT doc number for Stiffener Gerber file, change dimensions in mech. Drawings
    • Make corrections in assembly drawing
    • Update “Assembly Process” with resistors, and RPJ comments
  • C1 – C7 Layout: Same Interface with Grid
    • Problem Area: C4-C5 Stay Clear on Top
  • Start PO for Flight Order now
    • Specs and SOW are signed – off, have ROM
  • Order Parts from “Flex_cables_2_17”:
assembly process doc

Material

Manufacture

Function

Supplier

Item 1

FM-73M

Cytec Engineered Materials

Film Adhesive for nano connector to Flex Cable

Vendor or SLAC

Item 2

EA-9394

Hysol

Epoxy for potting of nano connector to Flex Cable

Vendor or SLAC

Item 3

A8486

Omnetics

37 pin female nano connector

SLAC

Item 4

100 Ohm

State of the Art

Resistor for flex cable

SLAC

Item 5

200 Ohm

State of the Art

Resistor for flex cable

SLAC

Assembly Process Doc

Responsible: Jerry Clinton, Parts: Jeff Tice

RPJ Message: should the drawing not specify the thermistor to be glued down and then

potted?

In flight cables we will also need to specify potting for the connectors and resistors (or maybe just a conformal coat for the latter).

Should there not be a note on the drawing regarding the cure cycle for the film adhesive (done)?

I would like to make it clear somehow that the film adhesive needs to extend under the metal wings of the connector, not just the main plastic body. This was not done so far at SLAC, but it is important if we are to be sure that the metal shells don't pop off.

hartmut:

Update with other parts:

39kW, thermistor, stiffener(?),

way to tkr flex cable milestones
Way to TKR Flex Cable : Milestones
  • 06/23/2003 Start of my clock
  • 08/26/2003 PRR Readiness Review
  • 10/27/2003 TKR Interface Design Report
  • 11/28/2003 Original target for TKR IDD
  • 01/23/2004 New Layout Crew on board
  • 02/10/2004 Finalize interface GRID-TKR Flex cable C0
  • 02/13/2004 Finalize electrical layout cable C0

“You are here”

  • 02/17/2004 Is TKR IDD signed-off?
  • 02/17/2004 PO Start Production of 14 non-flight C0 cables for INFN/DAQ
  • 03/01/2004 ? All cables designed and laid out, ready for PRR
  • 03/12/2004 Tim O’Heron leaves
  • 03/15/2004 ? Start Production of Short Cables
  • ????? PRR,PO! Start Production of Flight Cables
  • 03/15/2004 ? Flight connectors / Parts available ?
  • 04/15/2004 TKR Tower Test cables needed (C0)