Difference between revisions of "September 07, 2022 FCAL Insert Installation Meeting"
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(Created page with "== Meeting Time and Place == Wednesday September 07,2022 10am At Jefferson Lab, Hall D Counting House and on Teams == Agenda == * Minutes from last meeting https://halldweb....") |
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* Discuss Schedule, space, manpower and equipment needs | * Discuss Schedule, space, manpower and equipment needs | ||
** [[Media:FCAL2_strawman_schedule.pdf]] | ** [[Media:FCAL2_strawman_schedule.pdf]] | ||
+ | **[[image:Lower_step_assy.jpeg|thumb]] | ||
== 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 == | ||
+ | * 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) |
Latest revision as of 08:59, 12 September 2022
Meeting Time and Place
Wednesday September 07,2022 10am At Jefferson Lab, Hall D Counting House and on Teams
Agenda
- Minutes from last meeting https://halldweb.jlab.org/wiki/index.php/August_10,_2022_FCAL_Insert_Installation_Meeting
- Discuss Schedule, space, manpower and equipment needs
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)
- Sasha to write a plan on how to categorize and repair the modules
- 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
- If only on one end?
- 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
- Bring HV and LV cables from patch panel on side walls
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)