Meeting 26 February 2021

DISCUSSION ITEMS

• Updates on simulation, models, design

• TCS trigger update

• Hall D plans for 2021

• Other

PARTICIPANTS: A. Comer, A. Asaturyan, B. Wojtsekhowski, R. Ent, H. Mkrtchyan, M. Boer, S. Lassiter, V. Tadevosyan, T. Horn, G. Niculescu

SIMULATIONS AND DESIGN - POWER DEPOSITION IN COPPER (Bogdan, Gabriel, Steven)

• Calculated fluxes in FLUKA

• two versions of FLUKA now

• FEA models set up: allows for investigating different cuts (here, vertical) to investigate stress/strain on copper sections

• Initial finding: material gets hot, but stress/strain may not be too large overall

• Action: continue to determine the impact of thermal swelling on deformation of copper beam pipe for long-term operation in beam

TCS UPDATES: TRIGGER (Vardan)

• Accidental rate is high (14 MHz) - need to reduce to <100kHz for fADC

• Accidental rate can be reduced to 2.4 MHz by adding a threshold cut on the summed e-+e+ energy deposition

• Action: Investigate possible ways to further reduce background

• clustering instead of full quadrant

NEXT MEETING: FRIDAY 12 MARCH AT 8:00AM ET