R&D day

• Alexander Jentsch (Brookhaven National Laboratory)
• Andreas Werner Jung (member@cern.ch)
• Simone Michele Mazza
• Wei Li (Rice University)
• Zhenyu Ye (Laurance Berkeley National Laboratory)
• Satoshi Yano (Hiroshima University)
• Xuan Li (Los Alamos National Laboratory)

Room: https://bnl.zoomgov.com/j/1617546118?pwd=qNzxLqF8Q4Mj3RerAZdVSELzEgEQzV.1 Dear All, as announced earlier the Detector R&D Days will take place on 16-17 April 2024. The "days" are rather short to give US west coast and Europe a fighting chance. We put the groups with involvement from Asia early to ease the pain a bit. The preliminary agenda is here: https://indico.bnl.gov/event/27200/ The purpose of the meeting is of course to touch base and discuss the progress and status of the remaining R&D efforts. Some of the programs have finished and their presentation can be a brief show-and-tell to remind everyone what was learned and where things stand. For the ongoing projects we need to hear about where we stand with the milestones/deliverables and what the plan is to retire them. The length of the talks plus discussions varies from 15 to 55 minutes. The times given in the agenda include 10 min discussion (5 for 15 min talks). Please send the names of your speaker to us so we can add your name to the agenda. Best regards, Rolf & Thomas From: Thomas Ullrich <thomas.ullrich@bnl.gov> Subject: EXT: R&D Days - Reminder: Milestones Date: March 25, 2025 at 1:58:59 PM EDT Reply-To: thomas.ullrich@bnl.gov Dear All, We want to remind everyone that is important in all presentation to address the status of the milestones including a realistic estimate when they will be achieved. Please find attached a list of the current milestones for each project. Those are tight to P6 and were also shown in the recent DOE OPA reviews. Rolf added everywhere a proposal for some text on the R&D completion, borrowing from what we had last year. It may help you to get started but feel free to change/edit the text as it is only a guess/suggestion what we give you. Please also correct the completion dates if needed. Please have a slide on the milestones/deliverables in your presentation. Best regards, Rolf & Thomas eRD112 (ToF/AC-LGAD) Validate production readiness of the AC-LGAD detectors in the barrel region, the forward side end cap of the EIC detector, and the far-forward Roman Pot beam line detectors. This includes sensor prototypes, ASIC demonstrator, and full-scale parts tested and finalized. [September 2026] Done, HPK sensors look promising. Have purchased 3rd version HPK sensors with FY24 funds and collaborated on CERN purchase of FBK sensors for comparison, testing ongoing in FY25. ASIC demonstrator can only be beyond CD-2 so this will be Project Engineering and Design.

PDR TOF review in Fall of 2025 Room: https://bnl.zoomgov.com/j/1617546118?pwd=qNzxLqF8Q4Mj3RerAZdVSELzEgEQzV.1 Begin forwarded message: From: Sourav Tarafdar <stara@jlab.org> Subject: EXT: PDR for ToF Date: March 18, 2025 at 4:46:02 PM EDT To: "Xu, Zhangbu" <zxu22@kent.edu>, Satoshi Yano <syano@hiroshima-u.ac.jp> Cc: Benedikt Zihlmann <zihlmann@jlab.org> Dear Zhangbu and Satoshi, We are planning on having PDR during Fall 2025. The date is not fixed yet but we probably need to start thinking about it. The review committee will be charged with judging the progress of ToF subsystem based on following questions Are the technical performance requirements appropriately defined and complete for this stage of the project? Are the plans for achieving ToF performance and construction sufficiently developed and documented for the present phase of the project? 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? . Are the fabrication and assembly plans for Time of Flight subsytem consistent with the overall project and detector schedule? Are the plans for ToF integration in the EIC detector appropriately developed for the present phase of the project? Have ES&H and QA considerations been adequately incorporated into the designs at their present stage? Have the recommendations from previous reviews been adequately addressed? So we encourage the ToF subsystem to start planning the activities which will be capable of answering the above questions point by point to the full satisfaction of review committee. Further the review will be considering BToF and FToF as different subsystems . As such I have no idea who is DSTC for FToF. Also the reviewers are not yet selected. Please feel free to reach out if there are any additional questions. Best regards, Sourav

space request for TOF construction at BNL Room: https://bnl.zoomgov.com/j/1617546118?pwd=qNzxLqF8Q4Mj3RerAZdVSELzEgEQzV.1 Hi All, we are asked to provide detailed information about what space needs are required for the TOF at BNL prior to installation in the detector. Please help us complementing the spread sheet given by this link. You can ignore row 10 "Possible Locations" which is BNL internal. thank you for your help, Beni <<<<<<<<<<<<<<<<<<<<< From: Zhangbu Xu <xzb@bnl.gov> Subject: Re: TOF detector construction Date: July 11, 2024 at 12:06:42 PM EDT To: Benedikt Zihlmann <zihlmann@jlab.org> Cc: Sourav Tarafdar <stara@jlab.org>, "syano@hiroshima-u.ac.jp" <syano@hiroshima-u.ac.jp> The Information we are looking for: what kind of infrastructure and support is needed at BNL to give some example questions: 1) room for assembly: clean room? if yes what kind of clean room? staves assembled outside BNL and ready to ship to BNL (both BTOF and FTOF); need space of clean room (not high grade, regular lab) with liquid COOLING for testing and assembly standard PS 110V 2) how big the room needs to be? does it need additional head room? does in need tables ect.? (space 5x10m^2 for 18 months from April 2029) no need for head room, but need tables for holding detectors 3) what kind of electric power is needed 110V, 280V? how much amperage? 110V, and 20A 4) is some kind of gas supply needed? N2 bottle with regulator for example. no necessary 5) do you need lifting crane or gantry? no need for assembly before installation (<50lbl) 70KG for BTOF in terms of total weight, 18KG for FTOF in terms of total weight 6) do you need rigging support? only need for installation to ePIC at the final stage 7) do you need computer connectivity? Yes, only need network; at the time of installation to ePIC, we need full connection ready for testing; 8) stave assembly: Possible locations are: Japan for BTOF and Rice for FTOF cheers, Beni <<<<<<<<<xzb fill in the best I could. wait for feedback and iteration?

mechanic and cooling systems Room: https://bnl.zoomgov.com/j/1617546118?pwd=qNzxLqF8Q4Mj3RerAZdVSELzEgEQzV.1 Dear All, as discussed in todays TIC meeting (https://indico.bnl.gov/event/27009/ see Roland’s slides) to make progress on services and in particular cooling for the different subsystems, we have to ask for you help to fill out the excel file linked here Directory: General Documents Direct link to file: Detector Parameters and Services per Subsystem.xlsx It is really important to answer the questions discussed in the example tab as good as possible and the info is known right now. We fully understand, if not everything is perfectly understood this moment in time, but despite this, please provide, what you know right now and we will iterate with everybody to make progress. The deadline for the first iteration of information is 2 weeks from today, Monday 17th of March 2025. Thanks you everybody helping us to collect the information. Cheers Elke <<<<<<<<<xzb Tonko and I filled in the best we could. still need heat dissipation, flow rates

DAC review June 12 Room: https://bnl.zoomgov.com/j/1617546118?pwd=qNzxLqF8Q4Mj3RerAZdVSELzEgEQzV.1 There will be a Detector Advisory Committee (DAC) meeting during June 11-13, 2025. The tentative agenda is attached in the email. It is expected that each subsystem experts give presentations on the technical aspects of their subsystems. ToF is scheduled for June 12, 2025 from 14:00 hr for one hour slot. This includes both BToF and FToF and the schedule for ToF is looking like below: 14:00-14:10 : Overview (Satoshi) 14:10-14:35 : BToF technical details (Simone Mazza) 14:35-15:00 : FToF technical details (Mathieu Benoit)