status of current ttc components new ttc designs almost released future ttc designs n.
Skip this Video
Loading SlideShow in 5 Seconds..
TTC news PowerPoint Presentation

TTC news

122 Vues Download Presentation
Télécharger la présentation

TTC news

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. S. Baron Status of Current TTC Components New TTC Designs – (almost) released Future TTC Designs TTC news

  2. S. Baron TTCex Lasers TRR pin diode receivers TTCrqboards TTC components

  3. PHOTON (~50 USD) • Verypoor documentation • Alreadyolddevices (first order in 2003) • No information about median life • Webuiltourownaging test (23 devices) • OCP (>300 USD) • Similar package • Documentation available • Median life estimated to more than 88 years • Weadded 2 OCP modules to the batch of Photons for referenceduring the aging test S. Baron TTCex lasers

  4. S. Baron TTCex lasers aging TESTS

  5. S. Baron Setup: TTCex lasers aging tests Power supply ((Agilent) Thermal chamber (Ambient 70degC, case temperature 85%) Power cables Test started on October 1st Optical patch cords ST/PC-FC/PC TTCtx (23PHOTON, 2OCP) Analog receiver Analog receiver Optical power channels Current and temperature channels Summer Student: Laura Maria Comella Agilent 34970A Switch unit Labview GPIB Labview remote control Agilent 34970 Switch Unit As the lasers are in a butterfly package (including an ECL laser driver) we could not study the evolution of the light power at a constant drive current. Thus, we monitor both L and I at a constant V and T.

  6. Soft: S. Baron TTCex lasers aging tests Drive current (I) Total current For 25 lasers (3.8 Amps) Case temperature Optical Power (L)

  7. S. Baron Case temperatureadjustment 80degC 75degC 70degC Huge drop of L (by 30%) at chamber temperature of 80 deg


  9. S. Baron Normalised drive Current

  10. S. Baron Normalisedoptical power

  11. 2 months of monitoring (1464 hours) • No loss of a single laser • No drop of current/power more than 2% (and the drop was during the 2 first weeks) • If the first laser dies at 2000 hours, the Arrhenius equation will give a Median Life of 20 years (a bit short) • If it dies at 3000 hours or later, the Median Life will be > 40 years. • We will keep running the system during Xmas break to reach 3-4 months (3000 hours) • If ok, safe to keep on using PHOTON lasers for the next 10 years • Still 140 Photon lasers as spares (10% spares) • 30 OCP lasers • OCP shall be used for newer designs • Or even SFP when possible (see Ioannis presentation) S. Baron TTCex lasers aging tests - CONCULSIONS

  12. Complicated to produce and test • PCBsdegradeveryquickly and can’tbestored in the cupboardwaiting for the next batch • Averagerequests of about 30 boards per year • Normal production yield: 95% • With a 2 years-old PCB: 85% • With a 4 years-old PCB: 60% (!) • Wewouldneed to produce new PCBseveryyear • Tests are made via the old IC tester • Veryfast, but needs to be set up • No maintenance contractanymorewiththis tester • TRR are obsolete (beingreplaced, seenextslide) , crystals are starting to lack S. Baron TTCrq

  13. Next production of TTCrq • Could still be envisaged for stock consolidation using experiments components • We have several 100s of TTCrq boards which did not pass the test. We are working together with the workshop to find a procedure to repare them. • Should not be proposed to new experiments. Solution: TTCrq ref design or TTC-FMC (see below) S. Baron TTCrq

  14. S. Baron TRR replacement Truelight TRR 5 euros (obsolete) To be qualified early 2011 PD-LD sugar cubes Ficer Pin compatible (CERN request) 117 euros (small quantities) 68 euros for >800 pieces ST connectorized (CERN request) 28 euro (small quantities)

  15. S. Baron CORDE TTCex MKII TTC-FMC TTC new designs

  16. Goal: • Allow ultra fine delayadjustment of clocks and orbitsafter the RF2TTC to compensate phase shift due to temperature changes on the underground fibres • ATLAS launchedthisstudy • One input per signal (3 Orbits, 4 BCs) • 2 delayed outputs (1 ECL, 1 NIM to mimic the RF2TTC outputs) • 10ps resolution • Design • Dominique Gigi • Based on the RF2TTC design • Using the MC10EP195 • 10 bits programmable ECL delay chip (0-10ns, steps of 10ps) • VME interface • Made to match the RF2TTC outputs • Status • Protoypejustdelivered and beingtestedtogetherwith the RF2TTC board S. Baron cordE

  17. Goal: new up-to-date version of the TTCex • NA62 needed 21 new boards • New PLL to replace obsolete VCXO • Standalonefrequencycompliantwith QPLL locking range • Ability to turnon-offeach laser individually and monitor theirstatus • Exactly the samespecifications as the TTCex MKI • Design • StephaneDetraz • Based on CDCE62005 (PLL withdeterministicclock phase) • Status • Proto and preprodfullyvalidated • Production going on. Boardsexpected in January. • ECL components are stilldifficult to purchase S. Baron TTCex MKII

  18. Goal • TTCrqisgetting more and more complicated to produce • A reference design couldbeveryuseful for new designs • Weneed a TTC-FMC board for the GLIB • Whichflavor do wechoose? • A TTCrq-likeboard, beingusedalso as a reference design for new needs of TTCrq? • A TTClightreceiver, very basic? S. Baron TTC-FMC

  19. S. Baron TTC-FMC | TTCrqflavor Rx + TIA CDR FMC FPGA Xpoint Switch PLL

  20. S. Baron TTC-FMC | TTCrqflavor CROSS POINT SWITCH PLL CDCE62005 FMC Rx TRR- PD-LD - SFP CDR AND2814 FPGA Cyclone IV • Output signals: • L1A • Clockdeskew • SerialB • EvntCntRes • BCcntRes • Brdcst • Brdcststr • Locking status (CDR, PLL, FPGA) • Others: • Communication bus • Extra triggers in/out • Input signals: • Reset (CDR, PLL, FPGA)?

  21. S. Baron TTC-FMC | light flavor FMC 160 MHz Rx TRR- PD-LD - SFP CDR AND2814 Data i2c

  22. S. Baron TTC-FMC and GLIB

  23. S. Baron A Common LTTC atlas-cms? RF2TTC RF2TTC TTS CTP x20 GT DAQ DAQ BUSY x32 LTC LTPi • Components obsolete • CPLD sockets dying- being removed and CPLD soldered directly on the board x6 LTP • Difficult to maintain • Poor documentation • Not used for global runs, but used during commissioning phases TTCci TTCvi TTCex TTCex

  24. Ideas: • Weak points both in ATLAS and CMS in the TTC chain • But not the same for both of them • Be prepared in case of an emergency • Integrateboth local trigger module and TTC modules in one single module to reduceconnectivity issues • Propose a daughterboard for I/Os • Common VME interface, but separatefirmwares • Questions: • Mechanicalfeasibility? • Currentlyevaluating the I/Os requiredboth for ATLAS and CMS • Study to be made on triggeringlowlatency in an FPGA to fit ATLAS requirements • Get feedback fromboth ATLAS and CMS on the need of such a board S. Baron A COMMON LTTC ATLAS-CMS?

  25. S. Baron PON investigations – follow up Bi-directional TTC – components & power budget study TTC-Pon compatibility (ioannis)

  26. 2011 plans • Fully validate the Photons for the next 10 years • Identify a replacement for the TRR pin diode receiver • Release the latest TTC designs • Corde, TTCexMKII, TTC-FMC and TTCrq ref design • Study feasibility & interest of the ATLAS-CMS LTTC board • Study a PON FMC for GLIB – may be compatible with the TTC system? S. Baron conclusionS

  27. S. Baron SPARES SLIDES

  28. Lognormal cumulative plot withdeaddevices • Arrhenius formula • In our case: • σ= 0.4 • Ea = 0.4 (very conservative) • T2=20degC=293K • T1=85degC=358K • K=Boltzmann cst=8.6 10-5 eVK-1 • ML(T1)=104 (2000h) or 2.104 (3000h) S. Baron Median Life σ= 0.42