SiPM variants

• Tiziano Boasso

IRT V2 and dRICH geometry

• Chandradoy Chatterjee (INFN Trieste)

1. The dRICH geometry in the CAD model released on https://indico.bnl.gov/event/29963/ has overall consistency with our simulation model. The vessel boundaries are consistent. However, in the CAD model the beam pipe is off-centred and the sensor boxes are at 3'o clock and 9'o clock. In contrary our simulation model has sensors at 12'o clock and at 6'o clock, the beam pipe is symmetric. For a symmetric beam pipe the sensor orientation changes nothing. However modifications will be made. 2. IRT v2 merging is under discussion with SWG and pfRICH colleagues. During the merging main branches may have braking changes. But stable versions will be ensured. Dual mirror and quartz window implementation is under discussion. 3. SIDIS group requirements on systematics on LUTs needs further understanding. It will be discussed in a dedicated meeting with SIDIS WG conveners, Brain, Alexander. Colleagues are invited to join if they have specific comments.

Beam pipe effects

• Fateme Farokhi (INFN-LNS)

Postponed for next meeting

AOB