Meeting 2 October 2020

DISCUSSION TOPICS

• Simulations

• Power deposition from simulation

• Shielding and magnet model

• CPS Design Model Update

• Hall A/C model and design/implementation

• Hall D design and radiation simulations

• Other

PARTICIPANTS: Amy Comer, Donal Day, Hamlet Mkrtchyan, Rolf Ent, Steven Lassiter, Vardan Tadevosyan, Tanja Horn, Bogdan Wojtsekhowski, Josh Crafts, Marie Boer,

SHIELDING MODELING (Josh)

• Magnet Shielding

• Thin shield on top - small thickness not an issue (~1% hole not an issue), overall not an issue as it's material, but not radiation issue for personnel - no one on top of CPS in operations

• Total weight of lead system

• ~3300 lead bricks (40 tons) - seems ~50% more than before, length is 2.7m compared to 2.1m originally
• ~2500 W bricks (4x4x2 inches3) - seems 20% more than before

• CPS Coil Cooling/Power Feeds

• Actions

• Check number of lead bricks and dimensions, same for W bricks
• Radiation hard coil model analysis

POWER DEPOSITION (Gabriel)

• Extracted power depositions from FLUKA - for now in arbitrary units (unspecified multiple of kW/cm3) and as function of horizontal coordinate y; radiator is at z~10cm

• Observe peak at z~24cm

• Action: Next need to parameterize or extract heat deposition for each cell for input to thermal calculations

THERMAL CALCULATIONS (Amy)

• Model development complete

• Action: determine the best input format from simulation (functional form in x, y, z or array?)

LEAD BRICKS (Bogdan)

• Shipment preparations ongoing - expect ~40tons before end of the year

OVERALL ACTIONS

• Start discussion about format and date for next collaboration meeting

NEXT MEETING: FRIDAY 30 OCTOBER AT 8AM (ET)