Difference between revisions of "March 9, 2022 FCAL 2 Design Meeting"
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= Meeting Time and Place == | = Meeting Time and Place == | ||
Wednesday March 9, 1pm | Wednesday March 9, 1pm | ||
− | Teams | + | * Teams meeting on calendar |
* Present - Sasha Somov, Eugene, Stephanie, Keith Harding, Tim, Fernando, Chris Stanislav | * Present - Sasha Somov, Eugene, Stephanie, Keith Harding, Tim, Fernando, Chris Stanislav | ||
Line 7: | Line 7: | ||
== Agenda == | == Agenda == | ||
* Review minutes from last meeting 2 years ago https://halldweb.jlab.org/wiki/index.php/February_26,_2020_FCAL_2_Design_Meeting | * Review minutes from last meeting 2 years ago https://halldweb.jlab.org/wiki/index.php/February_26,_2020_FCAL_2_Design_Meeting | ||
+ | * Design/Fab status | ||
** Drawing Package checked (most) | ** Drawing Package checked (most) | ||
** 3D Model complete (except details to be discussed below) | ** 3D Model complete (except details to be discussed below) | ||
+ | ** Chillers in house | ||
+ | ** Ready to start fabricating some components | ||
* Discuss Tungsten absorber | * Discuss Tungsten absorber | ||
** Cover 1.5 crystals | ** Cover 1.5 crystals | ||
Line 18: | Line 21: | ||
** HV cables are 48 wire with PCB mounted connector, 35 cables | ** HV cables are 48 wire with PCB mounted connector, 35 cables | ||
** 1600 signal connectors on patch panels | ** 1600 signal connectors on patch panels | ||
− | |||
− | |||
** Need to decide to penetrate dark room or use existing labyrinths (enough space?) | ** Need to decide to penetrate dark room or use existing labyrinths (enough space?) | ||
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** LED/ 1mm fiber input through Rohacell | ** LED/ 1mm fiber input through Rohacell | ||
** Total number of fibers = ? | ** Total number of fibers = ? | ||
− | |||
* Cooling | * Cooling |
Latest revision as of 15:20, 1 April 2022
Meeting Time and Place =
Wednesday March 9, 1pm
- Teams meeting on calendar
- Present - Sasha Somov, Eugene, Stephanie, Keith Harding, Tim, Fernando, Chris Stanislav
Agenda
- Review minutes from last meeting 2 years ago https://halldweb.jlab.org/wiki/index.php/February_26,_2020_FCAL_2_Design_Meeting
- Design/Fab status
- Drawing Package checked (most)
- 3D Model complete (except details to be discussed below)
- Chillers in house
- Ready to start fabricating some components
- Discuss Tungsten absorber
- Cover 1.5 crystals
- Rohacell supported
- Monitoring System
- In Testing plan
- Electronics/Cabling
- Use HV and signal patch panels inside dark room, any details? Top and bottom?
- HV cables are 48 wire with PCB mounted connector, 35 cables
- 1600 signal connectors on patch panels
- Need to decide to penetrate dark room or use existing labyrinths (enough space?)
- Design Requirements/Specs
- Crystal Array
- Crystals, 2.05cm square, 20cm long
- Design for 40 x 40 array with ability to go 32 x 32
- 2 x 2 crystal hole with annealed steel insert, 2mm wall, 3.8cm ID
- Inset crystals 12.5cm DS of Lead glass blocks
- use 25um brass straps
- 350 um mu metal
- additional 50um mu metal inside
- separate by 25um kapton
- Tungsten Absorber
- 6 cm thick
- cover 1.5 crystals
- Support on rohacell, align to center tube
- Monitoring
- 1/2" acrylic sheet
- 6mm x 45° beveled edge
- LED/ 1mm fiber input through Rohacell
- Total number of fibers = ?
- Cooling
- Design for 10°C
- Designed for 4KW
- 11 parallel circuits for each chiller
- 2 manifolds (BL, BR)
- potted copper tubes into aluminum conduction cooling blocks
- Cooling of center tube is removeable to service bases
- Entire Dark room is an insulated refrigerator
- De-humidification needed
- Air/water heat exchangers (4x)
- Assembly Media:FCAL Insert Module installation procedure.pdf
- Measure existing FCAL geometry before removing
- Measure stacks of crystals before assy
- 19 lead glass blocks surround crystals on each side
- Determine qty and location of aluminum shims
- Machine Rohacell to measured size
- Pre-assemble acrylic/fibers/Rohacel before installation
- Keeping existing Cockroft-Walton bases
Minutes and Action Items
- Need to come up with cabling plan -
- looking at mounting patch panes on inside north and south walls of the dark room
- Fernando/Chris to come up with latest patch panel design
- Possibly add labyrinth to north and south outer walls - Tim to look
- Look at cooling system burp supply/return penetrations (Tim/Keith)
- Need to look at AC power requirements
- (18) 208V/20A circuits
- (6) 120V/20A circuits
- Need overall time, space, equipment and manpower plan for tear down and new install
- Need a plan for storing cables and modules when removed from existing FCAL (all)
- Look at existing mini FCAL for tell-tale issues
- Need workspace for refurbishing existing modules (all)
- Develop plan for refurbishing modules mased on mini-FCAL
- Need to come up with labeling plans for modules and cables (Sasha, Fernando)
- Need to come up with drip pan and leak sensor
- plan for temp and humidity monitoring