Difference between revisions of "June 18, 2024 KLONG CPS Design Meeting"

Latest revision as of 13:01, 26 June 2024

Meeting Time and Place

Tuesday, June 18, 2024, 1:00pm Hall D Counting House

• Invited - Hovanes Egiyan, Stephanie Worthington, Keith Harding, Pavel Degtiarenko, Tim Whitlatch, Eugene Chudakov, Josh Ballard

Agenda

• Review minutes from last meeting https://halldweb.jlab.org/wiki/index.php/June_04,_2024_KLONG_CPS_Design_Meeting
• Review new basic 3D model
  • Core Section update
  • New radiation levels? Pavel
  • Copper replaced CuW inside and adjacent to magnet coils
  • Layout of magnet and components (Stephanie/Keith)
  • Demo of AeroGo system successful
    • Noise low (less than 70 db in hall, 85db in ramp near compressor)
    • No visible dust
• Carbon ring upstream of CPS
• Power supply status - On order, due March 2025
• Met with Survey and Alignment group and agreed on preliminary plan for alignment - will meet again as details develop
• Magnet update (Josh/Stephanie)
  • Radiation levels at coils 2.E+4 Gy for a 10000 hour run
  • Plan on using copper dump skid to cool magnet - is it adequate LCW?
• Copper cooling update -
  • Status of brazing sample test media:CPS Absorber cooling test sample.pdf
• Lead brick painting is 10% done and all due back in September
• DeGauss test summer 2024
• June - items due from ERR
  • Thermal cycling of tungsten and copper write up - in work - justifying annealed copper (Tim)
  • Working on ANSYS plastic analysis and FLUENT models

Minutes

• Reviewed minutes from last meeting
• Pavel has run the radiation and energy absorption (Fluka) for the latest absorber and shielding configuration
  • Hovanes put Pavels finer mesh models into csv files
  • Keith changed 3D model geometry to match Pavel's latest
    • Copper substituted for CuW in and around magnet
  • Radiation levels at magnet coils are 4e4 gray for 10000 hrs running
    • No need for expensive epoxy ($5K per gallon)
    • CTD-101K resin can be used - good for 4e6 gray minimum
    • Need to check on LCW quality of existing dump copper cooling skid for magnet compatibility (Tim)
  • Pavel's new geometry has tapered steel upstream of absorber in X and Y - needs
  • Also taper in Y in Cu/W in magnet area - adjusted to use the exit size all the way through
  • New files with fine granularity in absorber high energy absorption areas are available - Hovanes converted to usable files for ANSYS
  • Tim will run new ANSYS models for the complete assembly
  • Tim learning FLUENT to verify cooling assumptions
  • There needs to be a collimator upstream of radiator
    • 1cm diameter hole
    • 15 cm deep in Z
    • OD of ? cm
    • About 10W absorption - no active cooling required
    • 80% W, 20% Cu
• Looking at 3D model
  • Core assembly coming together
    • Met with Alignment group Thursday to discus alignment/fiducialization plan
    • Looked at "Noah's Arc" stacking of steel - need features for stacking lead and heavy concrete
    • Copper absorber vacuum brazing test piece has been machined - will get tubing ready to braze in coming week
  • Air casters for moving - AeroGo demonstration proved to be successful
    • 5400 lbs moved with 25 lbs of force
• Discussion on FSD device to shut down beam if mis-steered - Hovanes has ideas and Pavel will look at feasability considering background
• Lead brick painting awarded - 17% complete
• Magnet Power Supply on schedule to be delivered March 2025
• Magnet DeGauss test still scheduled for summer - Tim will check on any progress
• Tim still writing and analyzing copper and tungsten thermal cyling data for ERR reply to Patrizia - hopefully a draft next week
• Need to link engineering documentation to the KLONG CPS wiki when available - only final documents