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ATCA for ATLAS Working Group: Status Update and Next Steps in Modular Electronics

The ATCA for ATLAS working group, active since Spring 2012, aims to propose a standard for modular electronics to replace VMEbus and make best practice recommendations. The group consists of 18 members from various departments, focusing on the evaluation of cooling units, power supplies, and card cages. Recent evaluations have shown differences in cooling performance and power delivery. Moving forward, the group seeks to address outstanding issues, extend its mandate, and explore the creation of a technical forum for engineers to discuss implementations and solutions.

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ATCA for ATLAS Working Group: Status Update and Next Steps in Modular Electronics

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  1. ATCA for ATLAS - status • Activities of the working group • PH/ESE xTCA evaluation project • Next steps

  2. ATCA working group • Mandate: • Propose a standard for modular electronics to replace VMEbus • Make recommendations with respect to best practices and common components • 18 members. Composition: • Sub-detectors • TDAQ • Sysadmins • DCS • Electronics coordinator • First meeting: Spring 2012 • 1 day workshop in July 2012 • https://indico.cern.ch/conferenceDisplay.py?confId=196590 • Recommendation document • https://edms.cern.ch/document/1304001/1

  3. ATCA working group • Mandate: • Propose a standard for modular electronics to replace VMEbus • Make recommendations with respect to best practices and common components • 18 members. Composition: • Sub-detectors • TDAQ • Sysadmins • DCS • Electronics coordinator • First meeting: Spring 2012 • 1 day workshop in July 2012 • https://indico.cern.ch/conferenceDisplay.py?confId=196590 • First results: • ATCA will be the main replacement for VMEbus • Use of MTCA not excluded

  4. (Main) ATCA recommendations

  5. (Main) ATCA recommendations (2)

  6. PH/ESE evaluation project • Started in 2011 with MTCA • ATCA recently added • Main focus is on components of general interest: • Card cages • Cooling units • Power supplies • Status • Evaluating shelves from Schroff and ASIS with focus on cooling • Have seen differences in cooling performance • Due to properties of “power groups” some slots in a shelf don’t offer the advertised power • AC/DC PSUs: • Looking at different powering schemes (per shelf, per rack, per system) • Evaluating products of: Emerson, PowerOne and Lineage • Establishing contact with additional companies (Comtel) • Commercial S/W for IPMI compliancy test available • Designers of blades are invited to test their modules in our lab • Additional information: • xTCA IG: https://espace.cern.ch/ph-dep-ese-be-PS-Evaluation/SitePages/Home.aspx • TWEPP: https://indico.cern.ch/sessionDisplay.py?sessionId=23&confId=228972#20130926

  7. Next steps • Has the “ATCA for ATLAS” working group done its job? • Recommendations for main features made • Anyone unhappy with them? • Does anyone feel that important issues have not yet been addressed? • Should the mandate be extended to include e.g. • More detailed technical requirements • Involvement in equipment procurement • Liaising with other experts • users of ATCA (LHCb) • CERN PH/ESE xTCA evaluation team • Etc. • Is there a need for a more technical forum? • For engineers to discuss implementation details • To share knowledge and technical solutions • To perform evaluations of commercial components • The group will have to decide how and by whom this follow-up work is to be done • Visit our new Web site: https://twiki.cern.ch/twiki/bin/viewauth/Atlas/ATCAforATLAS

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