Transcript Presentation - GLAST at SLAC

GLAST LAT Project
Feb. 17, 2004
TKR Flex Cable Issues addressed
Mechanical
1. Grid – Flex Cable Interface
2. CTE mismatch Tower – Grid (introduce loop)
3. Cable – Wall interference: move resistors
1. Cactus arm resistors on wall side, all other on TEM side
4. Cable – TEM interface (take out loop)
5. Stiffener at D connectors (TEM side) see below
6. Assembly Procedure (NO pre-bend, but needs more meat)
7. Bend Tool for Cactus arms (existence proof only)
Electrical
1.
2.
3.
4.
Doubling Vias
Via Stay-clear in Bend Area
Resistors to Improve GTRC margins (out)
Resistors to Improve Polyswitch Functioning (in)
Hartmut Sadrozinski:
TKR Flex Cables
1
GLAST LAT Project
Feb. 17, 2004
Docs for C0 Proto Flight Order
LAT-DS-02049-05
LAT-DS-00584-08
LAT-DS-02377-02
LAT-DS-00334-03
LAT-DS-03031-01
LAT-TD-xxxx
Flex-circuit Cable Schematic Diagram
Flex-circuit C-0 Mechanical Layout
Tracker Tower Flex-circuit Cable C-0 Assembly
Gerber Files for Flex-circuit C-0
TKR Flex cable Stiffener
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
Hartmut Sadrozinski:
TKR Flex Cables
2
GLAST LAT Project
Feb. 17, 2004
To be Done
Coordination: Jerry Clinton, Parts: Jeff Tice
Mechanical Layout: Tim O’Heron, Electrical Layout: Dave Nelson
1.
C0:
1.
2.
3.
2.
C1 – C7 Layout: Same Interface with Grid
1.
3.
Problem Area: C4-C5 Stay Clear on Top
Start PO for Flight Order now
1.
4.
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
Specs and SOW are signed – off, have ROM
Order Parts from “Flex_cables_2_17”:
Needed Ordered
Male (MCM side)
1626
1725
Female(Flex side)
2454
1800
Savers
1726
1600
D connectors
343
180
Thermistors
725
375
200 Ohms
2200
4425
100 Ohms
1480
600
39k Ohms
675
?
Dsavers
194
?
FCS Flexible Connector savers
97
?
Hartmut Sadrozinski:
Order Statusas of 2/13/04
Status To be ordered in addition
Fabricating
0
Fabricating
654
Fabricating
126
Complete
163
Complete
350
Fabricating
0
Complete
880
675
194
97
TKR Flex Cables
3
GLAST LAT Project
Feb. 17, 2004
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.
Material
Manufacture
Function
Supplier
Item 1
FM-73M
EA-9394
Item 3
A8486
Omnetics
Film Adhesive for nano connector
to Flex Cable
Epoxy for potting of nano
connector to Flex Cable
37 pin female nano connector
Vendor or SLAC
Item 2
Cytec Engineered
Materials
Hysol
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
Vendor or SLAC
SLAC
hartmut:
Update with other parts:
39kW, thermistor, stiffener(?),
Hartmut Sadrozinski:
TKR Flex Cables
4
GLAST LAT Project
Feb. 17, 2004
Way to TKR Flex Cable : Milestones
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06/23/2003
08/26/2003
10/27/2003
11/28/2003
01/23/2004
02/10/2004
02/13/2004
Start of my clock
PRR Readiness Review
TKR Interface Design Report
Original target for TKR IDD
New Layout Crew on board
Finalize interface GRID-TKR Flex cable C0
Finalize electrical layout cable C0
“You are here”
•
•
•
•
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•
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)
Hartmut Sadrozinski:
TKR Flex Cables
5