Upgrade Stave Assembly and Robotics

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2 Νοε 2013 (πριν από 4 χρόνια και 11 μέρες)

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M. Gilchriese

Upgrade Stave Assembly and
Robotics

August 3, 2007

LBNL


M. Gilchriese

2

Background


Stave concept, briefly, for silicon strips detectors


Meter
-
scale object that integrates


Local mechanical support and (in some concepts) cooling


Silicon detectors


Hybrids with IC electronics


Power and control distribution


Optical interface (in some concepts)


Stave is then placed on global support



A range of stave concepts exists


Fully integrated


Mechanics and cooling in single object


Power/control cable glued to local mechanical support


Silicon(with hybrids/ICs) glued directly


Optical interface at end


Partially integrated, many variants


Mechanics and cooling may be partly integrated(rest of cooling in global support)


Individual modules bolted to local support structure


Optical interface may be distributed


Note that stave concept in use in ATLAS


pixels were done this way


M. Gilchriese

3

Example Concepts



M. Gilchriese

4

Supports and Robotics


Global support


not addressed today, no significant interfaces to type of
robotic assembly we are discussing today (but note current barrel SCT used
robotic assembly of individual modules on global support)


Assembly of stave mechanical/cooling local supports


For barrel region there are roughly 400
-
800 of these to make (depends on
layout, if they are 1m or 2m long). Plus prototyping, preproduction….


Significant sub
-
component assembly by industry


Final assembly could be industrial, fully in
-
house or mixture. Too soon to tell.


Use of robotics in this process, I believe, depends significantly on type of stave
concept. Fully integrated less likely (fewer parts, simple)


We are working on fully integrated at LBL. Would I use robotics for assembly
of local supports? Likely not. Surely not if also involved in silicon module
robotic assembly


too much up
-
front investment needed.


Not familiar enough with other concepts to judge about use of robotics


Bottom line, in my opinion


concentrate today on robotics for
detector/hybrid assembly and placement on local supports. Come back to
possible robotic assembly of local supports later.





M. Gilchriese

5

Integrated Stave


Robotic Interface


Discuss prototype parts


on table, not in this presentation


Assume mechanical/cooling staves are made separately and cable attached


Need to define interfaces (a) handling and (b) fiducial marks and metrology(I assume this
must be solely optical, no touch). (b) requires serious work.


Rough align “core” in fixture and robot finds fiducials to define coordinate system
for silicon placement


Glue dispense


Pick and place pretested silicon module(and I guess optical interface board)


Repeat (one side).


Flip (by hand)


Do other side


Integrated metrology (survey)?

Or separate instrument?


Pick up and take to wire bonding (assumes have demonstrated that wire bonding
does not move detectors)


Test


Repair


Test/Final QC/QA


Store


Ship

Items in Red in robotic cell