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The Versatile Link Feasibility Demonstration (Project phase II)

The Versatile Link Feasibility Demonstration (Project phase II). Versatile Link. Francois Vasey , on behalf of the Versatile Link Team. Versatile Link Project. Off-Detector Commercial Off-The-Shelf (COTS) Custom Protocol. On-Detector Custom Electronics & Packaging Radiation Hard.

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The Versatile Link Feasibility Demonstration (Project phase II)

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  1. The Versatile Link Feasibility Demonstration(Project phase II) Versatile Link Francois Vasey, on behalf of the Versatile Link Team

  2. Versatile Link Project Off-Detector Commercial Off-The-Shelf (COTS) Custom Protocol On-Detector Custom Electronics & Packaging Radiation Hard • Optical Physical layer linking front- to back-end • Bidirectional, ~5Gbps • Versatile • Multimode (850nm) and Singlemode (1310nm) versions • Point to Point and Point to Multipoint architectures • Front-end pluggable module francois.vasey@cern.ch on behalf of Versatile Link team • Joint Project Proposal submitted to ATLAS & CMS upgrade steering groups in 2007 and endorsed in 2008 • Project Kick-off: April 2008 • Phase I: Proof of Concept (18mo) • Phase II: Feasibility Study (18mo) • Phase II: Consolidation (6mo) • Phase III: Pre-production readiness (18mo)

  3. VL Versatility francois.vasey@cern.ch on behalf of Versatile Link team

  4. VL Options and feasibility in March 2011 francois.vasey@cern.ch on behalf of Versatile Link team

  5. Consolidation Phase: March-Sept 2011 1 2 3 4 • Consolidation Phase launched to address following issues: • Power budget • In-detector fibre: Radiation InducedAttenuation in the cold • Front-end Pin: Radiation InducedResponsivity Drop • Back-end Tx: High OMA requirementdownstream • VTRxfeasibility • GBLD • availability • VCSEL compliance voltage • EdgeEmitter drive current • Full prototype demonstration • High Density Back-End Components Survey francois.vasey@cern.ch on behalf of Versatile Link team

  6. Issue 1:Radiation-InducedAttenuation in the cold A fibre is qualified if its total RIA is less than 1 dB SM SM • Dose Rate: • 0.66 kGy(Si)/hr MM MM D. Hall et al Optical Fibres willoperatewellunder radiation in the cold See D. Hall’s talk, B5b francois.vasey@cern.ch on behalf of Versatile Link team

  7. Issue 2: (1/2)Pin Radiation InducedResponsivity drop Calorimeter Tracker J. Troska et al francois.vasey@cern.ch on behalf of Versatile Link team

  8. Issue 2: (2/2)Pin Radiation InducedResponsivity drop • Only an issue athigh fluences for MM GaAs Pin diodes • Calorimeter grade Versatile Link • If MM • use standard GaAs MM pins • use COTS transmitteratbackend • Trackergrade Versatile Link • If SM • use InGaAs Pin • use «COTS» transmitter (LR) atbackend • If MM • use InGaAs Pin withupgradedtransmitteratbackend francois.vasey@cern.ch on behalf of Versatile Link team

  9. Versatile Link System Specification Four Versatile Link flavoursdefined Power budget specifiedwithmargin for all flavours Jitter budget adaptedfrom FC 4G standard Specsavailable as EDMS document CERN-0000090391 francois.vasey@cern.ch on behalf of Versatile Link team

  10. Back End components Can be COTS, except in Tracker grade MM(850nm) link Several SFP+ TRx modules successfullyevaluated Parallelopticsunderevaluation See A. Prosser’s poster (optoelectronics and links) francois.vasey@cern.ch on behalf of Versatile Link team

  11. COTS SM SFP+ TRx Measurement Norm OMA -3.6 dBm* Rx Sensitivity -12.6 dBm Ext. Ratio 3.0 dB Tx. Eye Opening 60% of OMA Tx Rise Time 70 ps Tx Fall Time 70 ps Tx Total Jitter 0.25 of UI Tx Deterministic Jitter 0.12 of UI Rx Total Jitter 0.34 of UI Rx Deterministic Jitter 0.14 of UI A. Prosser et al. * Tracker Grade Version francois.vasey@cern.ch on behalf of Versatile Link team

  12. MM Parallel Device Testing at 5 Gbps A. Prosser et al. francois.vasey@cern.ch on behalf of Versatile Link team

  13. Issue 3:GBLD ASIC availability • GBLD-V3 assembled on VTRx: • Functional (marginally, withZinputmatching circuit) • Drives VCSEL and EdgeEmitter • See C. Soos’ talk, B5b • GBLD-V4 redesign • To besubmitted in Nov 2011 • See G. Mazza’sposter(optoelectronicsand links) francois.vasey@cern.ch on behalf of Versatile Link team

  14. GBLD V3 + SM EEL C. Soos et al. francois.vasey@cern.ch on behalf of Versatile Link team

  15. GBLD V3 + MM VCSEL C. Soos et al. francois.vasey@cern.ch on behalf of Versatile Link team

  16. Issue 4: (1/2)VTRx prototype demonstration • SeveralVTRx prototype versions built and tested • SM, MM • GBLD, TI-ONET LDD • See C. Soos’ talk, B5b • Optical connector interface designed and fabricatedusingrapid 3D prototyping • Differentmaterials • Different designs francois.vasey@cern.ch on behalf of Versatile Link team

  17. Issue 4: (2/2)VTRx prototype demonstration francois.vasey@cern.ch on behalf of Versatile Link team • SEU test of completeassembly • See J. Troska’s poster (optoelectronics and links) • In-system performance beingevaluated • A. Xiang, SMU • Interfaces to higher system levelbeingprepared • See P. Vichoudis’ talk, B5b

  18. SEU Test of VTRx prototype • VRx MM SM J. Troska et al. VTx francois.vasey@cern.ch on behalf of Versatile Link team

  19. In System Performance of VTRx MM uplink SM downlink PRELIMINARY A. Xiang et al. • BER @ RT vs -30/+70 • Uplink • Downlink francois.vasey@cern.ch on behalf of Versatile Link team

  20. VL projectstatus, Sep 2011 TK grade Versatile Link FeasibilityDemonstrated Calo & Tk grade francois.vasey@cern.ch on behalf of Versatile Link team

  21. Fallbacks for Tk-grade back-end transmitters oRx oRx oTx splitter oRx oTx oRx oTx oRx oTx oTx oTx oRx oRx oRx oRx oTx oRx oRx oRx oRx oTx oTx oRx oRx oTx francois.vasey@cern.ch on behalf of Versatile Link team • What if SM arraytransmitterscannotbefound? • Use single channeltransmitter in broadcast mode • Must foreseeaddressabilityat GBLD, GBT or GBT-SCA level • SM PLC splitterstested and found to be radiation resistant • What if MM high power transmitterscannotbefound? • Select SM • Webelieve SM and MM parallelopticswillbefound

  22. Towards Versatile Link Project Phase III Common R&D VL Phase II Detector specific R&D 2020 GenericTendering 2015 (depending on userscommitment) VL Phase III • TOSA (MM) • ROSA (GaAs 850) • Fibre (MM) • TRx(MM-calo) • Opto-engine (MM-calo) francois.vasey@cern.ch on behalf of Versatile Link team • 5G low power VTRx for Tk application • Low power VCSEL driver, smallfootprint package • 10G optoengineVnTx for Calo application • Driver array, VCSEL array, package

  23. Conclusion • Versatile Link feasibilitydemonstrated • Detailed specifications • Components shortlist • Irradiation test results • VTRx prototype • System demonstrators • Cost book • Versatile Link phase III defined • Completion of generic R&D • Launch of detector specific R&D for 2020 applications • Launch of generictendering for 2015 applications, if commitment • https://espace.cern.ch/project-versatile-link/public/ francois.vasey@cern.ch on behalf of Versatile Link team

  24. Credits • CERN • Jan Troska, Vincent Bobillier, Spyros Papadopoulos, Christophe Sigaud, Csaba Soos, Pavel Stejskal, Sarah Storey, et al. • Fermilab • Alan Prosser, Mark Bowden, John Chramowicz, et al. • Oxford • Todd Huffman, David Hall, Nick Ryder, Tony Weidberg, et al. • Southern Methodist University • Annie Xiang, Andie Liu, Kent Liu, JingboYe, et al. francois.vasey@cern.ch on behalf of Versatile Link team

  25. Downstream Versatile Link Power Budget Tracker-grade back-end transmit power must beboosted to compensate radiation penalties Calorimeter-grade power budget compatible with COTS component specs francois.vasey@cern.ch on behalf of Versatile Link team

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