Meeting 30 October 2020

DISCUSSION ITEMS

• Simulations - parameterization of power deposition

• Shielding and magnet model - check of numbers of modules and analysis of radiation hard coil model

• CPS Design Model Update

• Hall A/C model and design/implementation - thermal model development etc.

• Hall D design and radiation simulations

• Other

PARTICIPANTS: Amy Comer, Rolf Ent, Hamlet Mkrtchyan, Hovanes Egiyan, Igor Strakovsky, Josh Crafts, Steven Lassiter, Vardan Tadevosyan, Vladimir Berdnikov, Tanja Horn, Marie Boer

SUMMARY NOTES

SIMULATIONS POWER DEPOSITION (Gabriel)

• Apply two-Gaussian to all panels

• Action: make a paramaterization in z (with some segmentation in x) - the quality of the tails in the fit may not be so important

• Also investigate if possible to use lookup tables

SHIELDING MODELING (Josh)

• Investigation of number of blocks - issue found and resolved

• Pb blocks 1867, W blocks ~2200
• expect Pb weight 28 tons, W weight ~20 tons

• Surface quality: if block sizes small should have small tolerances - sensitivity in stacking

• alternative: large W block, e.g. 10 tons or so like for spectrometer collimator?
• Action: status of CUA tests with W blocks

• Action: continue shielding model work

DESIGN/IMPLEMENTATION - THERMAL CALCULATIONS (Amy)

• CPS: length: 20cm, width starts at a few mmm, depth

• Action: investigate why temperature output high, e.g. heat source input too large (should be total 30kW for entire system), assumptions on cooling pipes, etc.

HALLD UPDATES - RADIATION SIMULATIONS (Hovanes)

• Investigating energy deposition - cooling system

• Working on Fluka simulations, modify gap and beam size and investigate energy deposition
• Working on GEANT4 simulations - Jim Ritman team
• Working with JLab RadCon team on another code - for beryllium source and CPS

NEXT MEETING: FRIDAY 4 DECEMBER AT 8:00AM (ET)