May 07, 2024 KLONG CPS Design Meeting

Meeting Time and Place

Tuesday, May 07, 2024, 1:00pm Hall D Counting House

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

Review minutes from last meeting https://halldweb.jlab.org/wiki/index.php/April_23,_2024_KLONG_CPS_Design_Meeting
Review new basic 3D model
- Copper Absorber geometry for Fluka?
- New radiation levels? Pavel
- Layout of magnet and components (Stephanie/Keith)
  - Current Z locations media:CPS Z locations.pdf
  - possible moving plan https://www.aerogo.com/products/air-caster-rigging-system/
    - Concerms with dust/contamination - Tim to work with ES&H
Baseline KLF schedule media:KLONG Baseline Schedule with MRI_v2.pdf
Power supply status - On order, due March 2025
Magnet update (Josh/Stephanie)
- Can we use less expensive resin? What is the actual expected radiation levels at coils now?
- Can we use tagger magnet LCW (goes upstairs - is radiation an issue?)
Copper cooling update -
- Status of brazing sample test media:CPS Absorber cooling test sample.pdf
- Lead brick painting is out for bid, bids due back this week
DeGauss test summer 2024
June - items due from ERR
- Thermal cycling of tungsten and copper write up - in work (Tim)

Reviewed minutes from last meeting
Discussed updated radiation model based on latest geometry
- Keith to supply absorber geometry and steel around it to Pavel
- Stephanie gave magnet dimensions to Pavel, for coils, Cu/H2O ratio is 56/44
Looked at Z locations in Tagger hall
- May be space to move upstream some amount if needed
- need space for Halo monitors upstream of radiator (maybe 8cm beampipe)
Will continue with plans to use air castors to move assy
Onish had a power supply reveiw this week, all is still on track for March 2025 delivery
DeGauss test
- Onish collecting parts and info for reversing switch for Mag measurement power supply
Magnet update
- Pavel will look at radiation levels to determine if less rad-hard resin can be used
- Plan on using copper dump skid for cooling magnet to utilize ALARA principles
Pavel asked about shielding downstream of permanent magnet, we will address that in the near future. We are concentrating on the center absorber/shielding section
Lead brick painting bids due in May 14
June - items due from ERR
- Thermal cycling of tungsten and copper write up - in work (Tim)