Difference between revisions of "September 21, 2022 FCAL Insert Installation Meeting"

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== Minutes ==
== Minutes ==
* I showed the strawman schedule and then how to handle the lead glass modules. The discussion then went right into cabling, which was discussed for the duration.
* Sasha brought up the need for categorizing the existing modules before unstacking and then keep them separate.
** Sasha to write a plan on how to categorize and repair the modules
*** determine existing problems
*** inspect as removed and decide which bin to go into
*** determine number of bins
*** those with no issues, keep whole
** Crates can handle around 1500 lbs
** should modules be removed from upstream or downstream?
** Develop space plan based on Sasha'a plan (Tim)
* Cable discussion
** How many new cable trays do we need (depends on plan)
** 1600 new HV cables (through side wall patch panels)
** 1600 new LV cables (through side wall patch panels) - ribbon cable daisy chained on inside?
** 1200 or 1600 new signal cables depending if we reuse existing 400 cables
** Do we remove all cables completely or just on detector end?
*** If only on one end?
****  the loose cables need to be supported and stowed somehow
**** little space left for work on platform
**** Less work for cabling folks
**** How to remove 400 existing signal cables
*** Remove cables completely?
**** Can remove racks so there is room to work on the platform
**** More work for cable folks
** How to route and support additional cables?
*** Bring HV and LV cables from patch panel on side walls
**** Route them from top and bottom to center
*** Add additional chain in Z to handle additional cables
*** Use smaller diameter (RGA 174 (2.8mm diam.)) for signal cables?
**** Route through patch panel or connector from DS wall
**** bring along center pipe and fan out?
**** need to decide on connectors and length
== Action Items ==
== Action Items ==

Revision as of 15:14, 20 September 2022

Meeting Time and Place

Wednesday September 21,2022 10am At Jefferson Lab, Hall D Counting House and on Teams


Step assy.jpeg
Manifold assy.jpeg
DS platform.jpeg
FCAL upper cable trays.jpeg
FCAL BL Lower cabletrays.jpeg
FCAL BR Lower cabletrays.jpeg


Action Items

  • Make a virtual 3D Mock up of baseline (Tim and Stephanie)
    • Assume HV and LV cables come from top and bottom
    • Assume signal cables are rg174 and patch in from downstream wall
    • Assume signal cables come along center pipe and fan out to crystals
    • Get samples of wires from Chris S. to use for model
  • Develop an lead-glass module unstacking plan (Sasha)
    • Criteria for category of repairs
    • # of bins
    • repair plan
  • Get quote on RG174 cables and connectors (Chris S.)
  • Come up with cable mapping plan (Fernando)