Meeting 16 July 2021

Discussion items:

• Design models, stress/thermal calculations

• Engineering analysis and planning

• TCS updates: Camille Zindy (VT & Sorbonne, France) Unpolarized TCS off proton and neutron, and background studies

• Other

PARTICIPANTS: Amy Comer, Arshak Asaturyan, Bogdan Wojtsekhowski, Brannon Semp, Camille Zindy, Donal Day, Rolf Ent, Gabriel Niculescu, Hamlet Mkrtchyan, Josh Crafts, Marie Boer, Steven Lassiter, Tristan, Vardan Tadevosyan, Tanja Horn

DESIGN MODELS, STRESS/THERMAL CALCULATIONS

• Validated magnet parameter in TOSCA models - all looks good

• latest model has the slightly increased length

• Detailed investigation of longitudinal cuts for thermal expansion

• Bottom will be flat,

• Temperature change per cooling circuit

• Temperature rise ~20 degC over short distance
• speed of water needs to be optimized
• Hall C unregulated pressure differential between supply and return ~80-100 psi

• Adding more resistance to cooling path

• Plan to make a prototype - can be done with a vendor

TCS UPDATES

• Unpolarized TCS of proton and neutron

• number of reconstructed events difference factor ~6 more protons than neutrons - depends on FF since interaction through BH - but rates sufficient overall
• need to work out a strategy to detect neutrons

• Initial studies of pion background

NEXT MEETING: FRIDAY 30 JULY AT 8AM ET