ETO Task Force meeting
https://cern.zoom.us/j/61274255815?pwd=2fwGbaMrZAYmUfpUfMCjKwpoYzPCKd.1
Meeting minutes
Quick recap
The meeting focused on reviewing changes accumulated for a second release of task force documents, building on work discussed in November. Fiodor presented updates to detector layout, clean room requirements, and technical infrastructure specifications that had been reviewed with host consortia. The team discussed several closed issues including updates to optical layouts, environmental requirements, and corrections to output tables. Key open items remaining included optical skeleton models requiring expert verification and a naming scheme for civil functional volumes that needed further discussion. The group agreed to set a deadline of end of week for final feedback before targeting an official release the following week, with Benoit tasked to upload files to EDMS once feedback was incorporated.
Next steps
Benoit
Upload all finalized files to EDMS — deadline: end of this week.
Fiodor
Circulate meeting minutes to all task force members, including those not present, and request final feedback by end of this week.
Agree on timing for the public release with ETO management, then distribute the EDMS link with the new release to stakeholders next week.
Update today's meeting slides to incorporate the GWAD abstract link and circulate updated slides along with the minutes.
Benoit, Fiodor, Jonathan and Romano
Clean up Overleaf document by removing red text, comments, and notes, converting all tracked changes to plain black text to finalize the document — deadline: end of this week.
Team
Optics experts: Fact-check the optical skeleton models and optical architecture diagrams prepared by Max to verify accuracy before inclusion in the release — deadline: end of this week.
All task force members: Review the summary of changes and provide feedback on the proposed second release — deadline: end of this week.
All Overleaf editors: Cross-check and finalize their respective sections in the Overleaf document, ensuring all edits are complete and accepted — deadline: end of this week.
Fiodor/Benoit: Mirror all released files to TDS in Unity following the official release next week.
Jonathan/Romano: Update the summary document to remove the reference to the mismatch of noisy room sizes (now irrelevant due to deletion of those rooms) to avoid confusion.
Jonathan/Romano: Ensure the summary document captures the most relevant changes from the output tables (e.g., environmental control parameters) in sufficient detail for readers to understand what changed.
Mikhail/Anna/optics team: Prepare optical layout presentation and accompanying poster for the GW/ADW workshop at Elba and Aachen.
Fiodor/team: Address remaining open GitLab issues (naming scheme for civil functional volumes, electrical demands, gate valve specifications) as part of a future third release.
Summary
Task Force Document Release Review
The meeting focused on reviewing accumulated changes to task force documents using the GitLab system, with the goal of making a new release. Fyodor explained that the team had agreed on a procedure to collect and accumulate suggested changes until enough material was gathered for a new release. The group had been working on improving consistency in drawings and tables, fixing issues with physical realism, and enhancing clarity in environmental requirements, particularly those related to infrastructure design. Fyodor noted that the next steps would involve reviewing the list of changes and agreeing on how to converge them into a new release.
Detector Layout Updates Presentation
Fiodor presented updates to the detector layout, including resized caverns to meet logistical constraints, standardized pipe sizes, and updated 3D models. He explained changes to clean room requirements, clarifying contamination levels and avoiding excessive costs. Fiodor also discussed modifications to the location of cryo traps and noisy rooms, noting that pumps can now be placed further away due to verified distance constraints.
Infrastructure Requirements and Layout Updates
Fiodor and Jonathan discussed updates to infrastructure requirements and layout designs. They identified inconsistencies in technical requirements, particularly regarding noise, cleanliness, and temperature stability, and worked with the OSC consortia to clarify these issues. The team also reviewed updates to optical layouts and drawings, including corrections to footprint dimensions and the addition of missing elements. They agreed that the skeleton model needs verification by optics experts before release, with two options presented: either incorporate it with expert verification or keep it as an open issue for a future release.
Detector Model and Documentation Updates
Fiodor presented updates to the detector layout model, noting that the changes were minor and focused on improving accuracy. Riccardo discussed improvements made to the science case and noise budget documents, including updates to tables, definitions, and corrections of typos. The team agreed to gather final feedback from task force members by the end of the week, with plans to release the updated documents publicly the following week if no major issues arise. Benoit was tasked with uploading files to EDMS, and the team identified areas for further improvement, including nomenclature and additional GitLab issues to address in future releases.
Document Review and Changes Discussion
Fiodor and Jonathan discussed the best document to review for changes, determining that the memo contains a detailed table of task force document elements, but it doesn't show before and after changes. They identified that GitLab provides summaries of closed issues, though the specific content of changes in the tables is not immediately readable there either. Fiodor highlighted specific changes including updated requirements for temperature stability in caverns and relaxed controls for clean rooms, noting that temperature stability at the level of 0.1 degrees is required at tower locations but can be provided by local temperature actuations if clean air control clashes with noise requirements.
Clean Room Requirements Updates
The team discussed updates to clean room requirements, with Fiodor explaining that after consultation with Stefan Grobman, dedicated noisy rooms for P.40 pumps are no longer required, allowing them to be located in general purpose areas. They reviewed several minor documentation updates including cleanliness level descriptions, optical layout drawings, and detector layout changes, with Jonathan confirming these were all minor adjustments that would be reflected in the green and red drawings. The team also addressed inconsistencies in room sizes between output tables and 3D models, with Jonathan clarifying that some previously incorrect dimensions had been corrected and certain noisy rooms near test masses had been removed.
Optical Architecture Discussion Updates
The team discussed open issues in the optical architecture and optical skeleton models, which need verification by optics experts. They also addressed the naming scheme for civil functional volumes, which requires further discussion and cannot be implemented in the current release. The group set a deadline for feedback by the end of the week to target an official release the following week. Additionally, Mikhail provided an update on a planned presentation and poster about the optical layout for the GW/ADW workshop at ELBA and Aachen.