Meeting 25 March 2022
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DISCUSSION TOPICS
- Engineering updates
- TCS updates
- KPT Photon Source
- Other
PARTICIPANTS: Amy Comer, Brannon Semp, Hamlet Mkrtchyan, Hovanes Egiyan, Igor Strakosvky, Steven Lassiter, Vardan Tadevosyan, Vitaly Baturin, David Hamilton, Tanja Horn, Rolf Ent, Bogdan Wojtsekhowski, Marie Boer,
MECHANICAL UPDATE
- Prototype - parts are being machined
- Next: cutting of the slots and radiation piece
- Prototype base cooling element redesigned
- CPS Magnet Coils - 3D model by Bert Metzger (see JT file)
- FLUENT modeling
- difficulties with current licensing configuration as more demand than licensing
- Action item: ask for another license
- Shielding material
- 280 W blocks of 440 blocks delivered from Elmet
- Action items:
- finish magnet design and drawings for procurement - still planned for this year
- re-design for single-wound coil
- check tolerances etc.
- prototype testing
- not needed for coils, yoke etc.
- shielding layout in CAD
- external W shielding in boxes for handling
- raster layout
- radiator design
- beamlines with Be windows
- N2 purge within magnet
- absorber final design
- LCW cooling of absorber - must be closed system
- cannot exceept 1 kW/month running
- Action item: running time for CPS?
FLUENT UPDATE
- Absorber temperature profile
- presented has cooling applied at bottom - see as a result differences between up/down
- cooling still needs to be implemented
- worked through entire problem and obtained solution - smooth distributions from model suggesting that all works as expected
TUNGSTEN MATERIAL
- Magnetization of tungsten shielding seems significant --> magnetic field --> force, which would be of concern for magnet coils
- some amount of Ni is ok, but when add additional iron then get the magnetization
- field in standard iron is 2T, much lower
- concern mainly because in Hall C have target close by
- with three times as many shielding blocks find a force of 400kg - order of magnitude too much for new magnet coil
- Implication to other tungsten? - need to check components carefully
HALLD UPDATE - PHOTON BEAM ALIGNMENT FOR KAON PRODUCTION TARGET
- Photon source model from CPS/HC setup
- Simulations suggest that need a compensation magnet (0.5m, 0.25T) to address fringe fields of main magnet - with this the photons are in center of Be converter
- No need to map the fringe fields
- Energy deposition at two locations of the converter
- Magnetic field map to z<-40cm - would be outside main magnetic field
- For Hall C it doesn't matter - go through field, e.g., dynamical polarized target (few T field) - result is a deflection and standard approach is to place corrector magnet to compensate for it
TCS UPDATE
- Overview of the dedicated TCS meeting on 3/24
- Plan is to submit the updated proposal at the upcoming PAC
- Action items:
- Marie will send reminder and zoom link for the next dedicated TCS meeting - weekly meetings are foreseen
NEXT CPS MEETING: FRIDAY APRIL 22ND AT 8:00AM ET