Monday, February 20, 2023 9am ET

 Zoom calling instructions:
 Zoom link: https://jlab-org.zoomgov.com/j/1610336969?pwd=T0hOMzRUbUVvMGlFTEZkMXBxYlZIZz09

Standing Agenda

JLAB:
- [1] Vladimir B. will provide a summary of permeability measurements of various materials for hardware in the DS.
- [2] Kris C. will present on FEA results of the DS belly plates.
MIT
UVa
- Kent summarized the fastener simulation docdb:1015
- Prakash has lintel study results docdb:1018
Manitoba
- Dose calcs for W, Pb, and Bi (Naz)

Return to Spectrometer Meetings
Return to MOLLER Wiki Main Page

Attendance: Juliette, Mike, Kent, Ernie, Jim F. Vladimir B., Kris Cleveland, Dave K., Cip, Kent, Sakib, Naz, Ryan, Probir, Sandesh, Eric

permeability measurements (Vladimir B.)
- 5% uncertainty; calibrated with supplied calibration sample (1.36 for our model)
- various materials for hardware in the DS
- Measurement range of mu = 1.001 - 1.999 w/ (mu-1) * 5% accuracy
- 3D printed holder mounted in rig to maintain a perpendicular probe to sample geometry
- set up almost ready for QA measurements
- Questions
  - Silicon Bronze tested in past - see [3]
  - how else does 485 come (besides rods)?
    - very accurate, consistent OD on rods
    - Available in square stock from McMaster
sims on fasteners (Kent)
- 1E-3 good for most things
- sim: 4E-3, 6e-3 - good luck that limit of Ferromaster is 1e-3
- most sensitive in TM4 region
- Update SRD: the fasteners in their current positions require susceptibility less than 0.002. If fasteners are added or moved, then the susc. limit would need to be re-evaluated; bulkead items have not yet been completed evaluated
FEA results of the DS belly plates (Kris C.)
- Master Bond EP33 shear stress limit of - 2200 psi (Al - Al)
- Stress analysis assume 4 piece plate @ 3 mm thickness
- ~250 psi (mesh element 2 layers thick, with quadratic elements)
- don't need as many breaks in the W?
lintel study results (Prakash) -> Next week
Dose calcs for W, Pb, and Bi (Naz) -> Next week