IB2 Endcap
Muon Chamber Panels Specifications
Below are the minutes for the UF-FNAL
video conference for the panels specifications.
Technical Specifications for the
Cathode Strip Panels
Nelson led the discussion for the specification document for the Cathode
Strip Chamber Panels.
The DRAFT of the document has been distributed by Nelson. The
final Version will appear on these pages. The following represents
the major points and action items that were discussed.
Jump to Conclusions
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General
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Dan, Ed, Gena, Andrei and the FNAL people that worked on it will sign the
document
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We will require PLASCORE to provide a description of the technology including
the temperature and curing time for the glue, glue designation, splicing
of the core panels (whether it's done before or after cutting the core)
ecc.. and we will require them not to deviate from it.
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We will have an agenda with discussion points for the visit to PLASCORE.
We will present them with options (ex: who is doing the QA/QC on the first
5 panels ? Possible answers: PLASCORE,FNAL on site, FNAL techs at PLASCORE)
and optimize the cost of the panels.
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Section 1.0
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Section 2.0
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Section 3.0
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Remove the line on the "splicing of the core panels" and let them propose
a procedure from which they will not be allowed to deviate.
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Section 4.0
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Remove the internal PLASCORE designation for the glue. This will allow
us to present these technical specs to other vendors.
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Section 5.0
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Section 6.0
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The section of the bending of the plates under applied force was deemed
un-necessary. We really are concerned with an overall bowing or twisting
of the plates which cannot be determined in the flatness measurements performed
pushing the plate against a datum. It was suggested that we should look
at the bowing of the panels we have in-house in a free-state situation
(panels sitting on the edge) and reject panels which bow by more than 1
cm over 12 feet. We decided to measure the bowing with a crude method (panels
on the edge, using a piece of wire under tension), select the worst
situation and check if, by applying pressure in the appropriate regions
(gap bars and spacers locations) we can eliminate the overall bowing. That
will give us an idea of the maximum bowing we can afford. This number
will enter the technical specs.
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Action Item: IB4
(Bill Pritchard) will make some flatness and bowing tests on the approx.
15 panels presently at FNAL.
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Section 7.0
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Section 8.0
O.K., open for discussion during the visit at PLASCORE.
CONCLUSIONS
The document was approved pending the
modification discuss above (bowing), the inclusion of a general requirement
for PLASCORE to describe their method and not deviate from it and the optimization
of the cost based on different options available for production.