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

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Presentation on theme: "Versatile Link The Versatile Link Feasibility Demonstration (Project phase II) Francois Vasey, on behalf of the Versatile Link Team."— Presentation transcript:

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

2 Versatile Link Versatile Link Project 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 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) On-Detector Custom Electronics & Packaging Radiation Hard Off-Detector Commercial Off-The-Shelf (COTS) Custom Protocol 29 Sep 2011 on behalf of Versatile Link team 2

3 Versatile Link VL Versatility Front-End VTRxFibreBack-End TRx EE laser, 1310nmSMLR-SFP+ TRx VCSEL, 1310nmSNAP12like Rx InGaAs PIN, 1310nmOpto Engine Rx VCSEL, 850nmMMSR-SFP+ TRx GaAs PIN, 850nmSNAP12like Tx,Rx, TRx InGaAs PIN, 850nm Opto Engine Tx, Rx, TRx 29 Sep 2011 on behalf of Versatile Link team 3

4 Versatile Link VL Options and feasibility in March 2011 Front-End VTRxFibreBack-End TRx EE laser, 1310nm GBLD Drive current limitation SMLR-SFP+ TRx VCSEL, 1310nm Check GBLD compliance Voltage SNAP12like Rx SM Tx not (yet) available InGaAs PIN, 1310nmOpto Engine Rx SM Tx not (yet) available VCSEL, 850nm Check GBLD compliance Voltage MM RIA in cold at low dose rate SR-SFP+ TRx Tx OMA to meet power budget GaAs PIN, 850nm Responsivity drop under irradiation SNAP12like Tx,Rx, TRx Tx OMA to meet power budget InGaAs PIN, 850nm Responsivity/Leakage to be confirmed Opto Engine Tx, Rx, TRx Tx OMA to meet power budget 29 Sep 2011 on behalf of Versatile Link team 4

5 Versatile Link Consolidation Phase: March-Sept 2011 Consolidation Phase launched to address following issues: Power budget In-detector fibre: Radiation Induced Attenuation in the cold Front-end Pin: Radiation Induced Responsivity Drop Back-end Tx: High OMA requirement downstream VTRx feasibility GBLD availability VCSEL compliance voltage Edge Emitter drive current Full prototype demonstration High Density Back-End Components Survey 29 Sep 2011 on behalf of Versatile Link team

6 Versatile Link Issue 1: Radiation-Induced Attenuation in the cold Optical Fibres will operate well under radiation in the cold See D. Halls talk, B5b 29 Sep 2011 on behalf of Versatile Link team 6 Dose Rate: 0.66 kGy(Si)/hr A fibre is qualified if its total RIA is less than 1 dB D. Hall et al SM MM

7 Versatile Link 29 Sep 2011 on behalf of Versatile Link team 7 Issue 2: (1/2) Pin Radiation Induced Responsivity drop CalorimeterTracker J. Troska et al

8 Versatile Link Issue 2: (2/2) Pin Radiation Induced Responsivity drop Only an issue at high fluences for MM GaAs Pin diodes Calorimeter grade Versatile Link If MM use standard GaAs MM pins use COTS transmitter at backend Tracker grade Versatile Link If SM use InGaAs Pin use «COTS» transmitter (LR) at backend If MM use InGaAs Pin with upgraded transmitter at backend 29 Sep 2011 on behalf of Versatile Link team 8

9 Versatile Link Versatile Link System Specification Four Versatile Link flavours defined Power budget specified with margin for all flavours Jitter budget adapted from FC 4G standard Specs available as EDMS document CERN Sep 2011 on behalf of Versatile Link team 9 Fibre TypeRadiation Tolerance Grade Calorimeter-grade Tracker-grade 10 kGy, 5x10 14 n/cm kGy, 2x10 15 n/cm 2,1x10 15 h/cm 2 SM MM

10 Versatile Link Back End components Can be COTS, except in Tracker grade MM (850nm) link Several SFP+ TRx modules successfully evaluated Parallel optics under evaluation See A. Prossers poster (optoelectronics and links) 29 Sep 2011 on behalf of Versatile Link team 10 Fibre TypeRadiation Tolerance Grade Calorimeter-grade Tracker-grade 10 kGy, 5x10 14 n/cm kGy, 2x10 15 n/cm 2,1x10 15 h/cm 2 SMMin Tx OMA: -5.2dBmMin Tx OMA: -3.6dBm MMMin Tx OMA: -3.2dBmMin Tx OMA: -1.6dBm

11 Versatile Link COTS SM SFP+ TRx 29 Sep 2011 on behalf of Versatile Link team 11 A. Prosser et al. MeasurementNorm OMA-3.6 dBm* Rx Sensitivity-12.6 dBm Ext. Ratio3.0 dB Tx. Eye Opening60% of OMA Tx Rise Time70 ps Tx Fall Time70 ps Tx Total Jitter0.25 of UI Tx Deterministic Jitter0.12 of UI Rx Total Jitter 0.34 of UI Rx Deterministic Jitter0.14 of UI * Tracker Grade Version

12 Versatile Link MM Parallel Device Testing at 5 Gbps 29 Sep 2011 on behalf of Versatile Link team 12 A. Prosser et al.

13 Versatile Link Issue 3: GBLD ASIC availability GBLD-V3 assembled on VTRx: Functional (marginally, with Z input matching circuit) Drives VCSEL and Edge Emitter See C. Soos talk, B5b GBLD-V4 redesign To be submitted in Nov 2011 See G. Mazzas poster (optoelectronics and links) 29 Sep 2011 on behalf of Versatile Link team 13

14 Versatile Link GBLD V3 + SM EEL 29 Sep 2011 on behalf of Versatile Link team 14 C. Soos et al.

15 Versatile Link GBLD V3 + MM VCSEL 29 Sep 2011 on behalf of Versatile Link team 15 C. Soos et al.

16 Versatile Link Optical connector interface designed and fabricated using rapid 3D prototyping Different materials Different designs 29 Sep 2011 on behalf of Versatile Link team 16 Issue 4: (1/2) VTRx prototype demonstration Several VTRx prototype versions built and tested SM, MM GBLD, TI-ONET LDD See C. Soos talk, B5b

17 Versatile Link SEU test of complete assembly See J. Troskas poster (optoelectronics and links) In-system performance being evaluated A. Xiang, SMU Interfaces to higher system level being prepared See P. Vichoudis talk, B5b 29 Sep 2011 on behalf of Versatile Link team 17 Issue 4: (2/2) VTRx prototype demonstration

18 Versatile Link SEU Test of VTRx prototype VTx 29 Sep 2011 on behalf of Versatile Link team 18 VRx J. Troska et al. SM MM

19 Versatile Link In System Performance of VTRx RT vs -30/+70 Uplink Downlink 29 Sep 2011 on behalf of Versatile Link team 19 PRELIMINARY A. Xiang et al. SM downlink MM uplink

20 Versatile Link VL project status, Sep Sep 2011 on behalf of Versatile Link team 20 Front-End VTRxFibreBack-End TRx EE laser, 1310nm GBLD Drive current OK SMLR-SFP+ TRx VCSEL, 1310nm GBLD compliance Voltage OK Board-edge Rx SM Tx not (yet) available InGaAs PIN, 1310nmOpto Engine Rx SM Tx not (yet) available VCSEL, 850nm GBLD compliance Voltage OK MM RIA in cold at low dose rate OK SR-SFP+ TRx Tx OMA to meet Tk power budget GaAs PIN, 850nm Responsivity drop: Calo grade OK Board-edge Tx,Rx, TRx Tx OMA to meet Tk power budget InGaAs PIN, 850nm Assembly to be confirmed: Tk grade Opto Engine Tx, Rx, TRx Tx OMA to meet Tk power budget TK grade Calo & Tk grade Versatile Link Feasibility Demonstrated

21 Versatile Link Fallbacks for Tk-grade back-end transmitters What if SM array transmitters cannot be found? Use single channel transmitter in broadcast mode Must foresee addressability at GBLD, GBT or GBT-SCA level SM PLC splitters tested and found to be radiation resistant What if MM high power transmitters cannot be found? Select SM We believe SM and MM parallel optics will be found 29 Sep 2011 on behalf of Versatile Link team21 oRx oTx oRx oTx oRx oTx oRx oTx oRx oTx splitter oRx oTx oRx oTx oRx oTx oRx

22 Versatile Link Towards Versatile Link Project Phase III 29 Sep 2011 on behalf of Versatile Link team 22 Common R&D Generic Tendering 2015 (depending on users commitment) Detector specific R&D 2020 VL Phase II VL Phase III 5G low power VTRx for Tk application Low power VCSEL driver, small footprint package 10G opto engine VnTx for Calo application Driver array, VCSEL array, package TOSA (MM) ROSA (GaAs 850) Fibre (MM) TRx (MM-calo) Opto-engine (MM-calo)

23 Versatile Link Conclusion Versatile Link feasibility demonstrated 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 generic tendering for 2015 applications, if commitment https://espace.cern.ch/project-versatile-link/public/ 29 Sep 2011 on behalf of Versatile Link team 23

24 Versatile Link 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, Jingbo Ye, et al. 29 Sep 2011 on behalf of Versatile Link team 24

25 Versatile Link Downstream Versatile Link Power Budget Tracker-grade back-end transmit power must be boosted to compensate radiation penalties Calorimeter-grade power budget compatible with COTS component specs 29 Sep 2011 on behalf of Versatile Link team 25


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