cold box design and temperature tests

• grigory nigmatkulov (UIC)

Room: https://bnl.zoomgov.com/j/1617546118?pwd=qNzxLqF8Q4Mj3RerAZdVSELzEgEQzV.1

Beam Test at Jlab and DESY and Japan updates? Room: https://bnl.zoomgov.com/j/1617546118?pwd=qNzxLqF8Q4Mj3RerAZdVSELzEgEQzV.1

mechanic design updates? Room: https://bnl.zoomgov.com/j/1617546118?pwd=qNzxLqF8Q4Mj3RerAZdVSELzEgEQzV.1 https://indico.bnl.gov/event/30894/contributions/117695/attachments/66780/114637/TOF_trays_1201025.pdf Purdue group is working on a new design.

review action item tracker Room: https://bnl.zoomgov.com/j/1617546118?pwd=qNzxLqF8Q4Mj3RerAZdVSELzEgEQzV.1

December review (PDR) closeout and action items Room: https://bnl.zoomgov.com/j/1617546118?pwd=qNzxLqF8Q4Mj3RerAZdVSELzEgEQzV.1 December 3 closeout December 10 The project decided to hold TOF peer review on December 3 , 2025 instead of TOF PDR. As such all engineering and DAQ related talks won't be needed for that. The indico agenda is below Review December 3rd confirmed Indico: https://indico.bnl.gov/event/30519/ Apart from review there will be extended page turn on 24th November at 6:00 PM (EST) where the speakers are expected to have all their slides ready. Below is the agenda details. -extended page turns 24th of November starting 6:00 pm Indico: https://indico.bnl.gov/event/30520/ Subject: Charge - Peer Review of the EIC Particle Identification Detectors based on AC-LGAD, December 3rd, 2025 The scope of this peer review includes the particle identification detectors based on time-of-flight using AC-LGAD in the central EIC detector. This includes one detector system in the barrel (bTOF) and one in the forward endcap region (fTOF). (The review also compares with envisioned AC-LGAD applications in the auxiliary detector systems in the far-forward and far-backward region.) The peer review covers the design and projected performance for these detectors, and the plans towards production phase. The review may include design and fabrication choices and their cost-effectiveness, the construction schedule, considerations for safety and quality assurance, levels of redundancy, commissioning and calibration procedures, considerations for materials and labor, operational reliability and longevity, and any other considerations that may influence the construction, maintenance and operation of these particle identification detectors. This is an assessment of the status of these detectors. We anticipate a further two-day preliminary design review of the readiness of these detectors in the April 2026 time frame which will feed into the upcoming project reviews for Critical-Decision 2 (baselining) anticipated to be mid-2026. The expected design maturity at that stage (mid-2026) is 60% or higher, with still roughly 1.5 years for final design completion remaining before start of construction anticipated in 2028. For this peer review, any comments and recommendations to fold into the design continuation are very welcome. Please address the following questions point-by-point based on the current stage of the project: 1. Are the technical performance requirements appropriately defined and complete for this stage of the project? 2. Are the plans for achieving detector performance and construction sufficiently developed and documented for the present phase of the project? 3. Are the current designs and plans for detector and electronics readout likely to achieve the performance requirements with a low risk of cost increases, schedule delays, and technical problems? 4. Are the fabrication and assembly plans for the AC-LGAD based detector systems sufficiently developed for the present phase of the project?