Difference between revisions of "May 17, 2023, FCAL Insert Installation Meeting"
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* Status of dis-assembly | * Status of dis-assembly | ||
** Shimming found to date [[Media:Shimmap.jpeg]] | ** Shimming found to date [[Media:Shimmap.jpeg]] | ||
− | ** | + | ** Frame removal work starting today |
+ | * Preliminary Stacking test | ||
+ | ** [[Media:compressed.jpeg]] | ||
+ | ** [[Media:thinpad.jpeg]] | ||
+ | ** [[Media:tightscrew.jpeg]] | ||
+ | ** [[Media:torque.jpeg]] | ||
+ | ** [[Media:Stacktest.jpeg]] | ||
* Crystal/glass boundary | * Crystal/glass boundary | ||
** [[Media:Thermacool.pdf]] | ** [[Media:Thermacool.pdf]] | ||
** Samples in hand (.062" and .035", no glue) - look and feel fine | ** Samples in hand (.062" and .035", no glue) - look and feel fine | ||
** Thermal test TBD | ** Thermal test TBD | ||
− | ** Stacking test | + | ** Stacking test ready for crystals |
− | *LMS | + | *LMS headway |
== Minutes == | == Minutes == | ||
− | * Reviewed minutes from | + | * Reviewed minutes from last meeting |
− | ** | + | ** Discussed shimming of existing FCAL |
− | ** | + | *** No shims found until the center stainless steel tube. Shimmed with 1 80um shim where no strap against the tube as expected |
− | ** | + | *** Shims on edge steps 0.5 to 1.5mm. Was 1.5 mm by design |
− | ** Malte | + | *** One of the lower rows had various shims 80 - 160 um? |
− | ** Sasha | + | *** 1st row had 80um every other module |
− | ** LMS - | + | *** Module height at some rows varied as much as 350 um with no shims. |
− | *** | + | *** looks like it was determined at some point in time it was decided that shimming added no value except at critical areas such as the beampipe |
− | *** | + | ** Malte gave update that all modules were removed as of yesterday - unstacking is complete! |
− | *** | + | ** Discussed need for stacking map - will have large printout with orientation and color code (blue or green) |
− | *** | + | ** Sasha ordered cable labler |
− | * | + | ** Sasha wishes to assemble cables in ESB - should be fine |
− | * | + | ** Stephanie and Arshak have a basic plan for LMS box and fibers that appears to be workable |
− | * | + | ** Lead Glass module Stacking test in ESB - existing FCAL 40.141 mm per block on average |
− | * | + | ***1st row stacked - 15 modules - |
− | * | + | **** 40.164 mm average module width before squeezing |
+ | **** 40.111 mm average module width after squeezing less than 3 inch-lbs per screw | ||
+ | **** 53um per module change - 800um for entire row. | ||
+ | **** 40.137 mm ave after release - 26um per module - 390um spring back | ||
+ | *** 2nd row stacked - 21 modules - same block | ||
+ | **** 40.18 mm initial width | ||
+ | **** 40.14 mm final after squeeze 2 in-lbs | ||
+ | *** 1st 2 blocks in 3rd row were placed and fit just right | ||
+ | *** Installed a piece of the 1/32" ThermaCool R10404 on vertical beam left edge and compressed it | ||
+ | **** 3 in-lb torque per bolt, approx. 160 lbs total over 18 sq. inches - 9 psi - 62kPa | ||
+ | **** Was very tight and could not be pulled out with moderate force | ||
+ | **** Probably makes sense to use this pad on beam left side only to take up any cooling shrinkage differential | ||
+ | * Ready for crystal stacking test - Sasha, Vlad, Arshak | ||
+ | * Tim is updating tech version of stacking procedure document |
Latest revision as of 09:46, 18 May 2023
Meeting Time and Place =
Wednesday May 17, 2023 9am At Jefferson Lab, Hall D Counting House and on Zoom https://jlab-org.zoomgov.com/j/1619449114?pwd=UFlVQ1dWTGZ0ZkVYSEx5QzE4YUI3dz09&from=addon meeting ID: 161 944 9114 Passcode: 562689
Agenda
- Minutes from last meeting https://halldweb.jlab.org/wiki/index.php/May_10,_2023,_FCAL_Insert_Installation_Meeting
- Status of dis-assembly
- Shimming found to date Media:Shimmap.jpeg
- Frame removal work starting today
- Preliminary Stacking test
- Crystal/glass boundary
- Media:Thermacool.pdf
- Samples in hand (.062" and .035", no glue) - look and feel fine
- Thermal test TBD
- Stacking test ready for crystals
- LMS headway
Minutes
- Reviewed minutes from last meeting
- Discussed shimming of existing FCAL
- No shims found until the center stainless steel tube. Shimmed with 1 80um shim where no strap against the tube as expected
- Shims on edge steps 0.5 to 1.5mm. Was 1.5 mm by design
- One of the lower rows had various shims 80 - 160 um?
- 1st row had 80um every other module
- Module height at some rows varied as much as 350 um with no shims.
- looks like it was determined at some point in time it was decided that shimming added no value except at critical areas such as the beampipe
- Malte gave update that all modules were removed as of yesterday - unstacking is complete!
- Discussed need for stacking map - will have large printout with orientation and color code (blue or green)
- Sasha ordered cable labler
- Sasha wishes to assemble cables in ESB - should be fine
- Stephanie and Arshak have a basic plan for LMS box and fibers that appears to be workable
- Lead Glass module Stacking test in ESB - existing FCAL 40.141 mm per block on average
- 1st row stacked - 15 modules -
- 40.164 mm average module width before squeezing
- 40.111 mm average module width after squeezing less than 3 inch-lbs per screw
- 53um per module change - 800um for entire row.
- 40.137 mm ave after release - 26um per module - 390um spring back
- 2nd row stacked - 21 modules - same block
- 40.18 mm initial width
- 40.14 mm final after squeeze 2 in-lbs
- 1st 2 blocks in 3rd row were placed and fit just right
- Installed a piece of the 1/32" ThermaCool R10404 on vertical beam left edge and compressed it
- 3 in-lb torque per bolt, approx. 160 lbs total over 18 sq. inches - 9 psi - 62kPa
- Was very tight and could not be pulled out with moderate force
- Probably makes sense to use this pad on beam left side only to take up any cooling shrinkage differential
- 1st row stacked - 15 modules -
- Discussed shimming of existing FCAL
- Ready for crystal stacking test - Sasha, Vlad, Arshak
- Tim is updating tech version of stacking procedure document