Transcript DAQ Issues
Detector DAQ Issues Jean-Sebastien Graulich, Geneva o Achievements Since CM23 o Detector DAQ o Trigger o Online Software o Front End Electronics o Schedule Milestones o Summary MICE CM January 2009 Jean-Sébastien Graulich Slide 1 Achievements since CM22 TOF1 included in the DAQ and in the trigger New flashADC (500MHz) installed for CKOV Computer Clock synchronization fixed Not 100% satisfactory: PCs are synchronized to each other but not to the outside world (firewall issue) Slow progress in including the target DAQ and CAM into the online Data Stream Progress has been slower than foreseen MICE CM January 2009 Jean-Sébastien Graulich Slide 2 Detector DAQ Issues Known issues Limit on the number of particle events From DAQ itselfs ( about 200 Particles/Spill ) Was expected Technical solutions exist From Online Monitoring ( about 40 Particles per Spill ) Not expected Need more investigations Event reconstruction Occasional and marginal mismatch between the number of particle triggers in different VME boards Recently, dramatic mismatch between the number of particle triggers in the two crates for some runs -> Serious Event building problem ! Need more investigations Interface with EPICS becomes a top priority MICE CM January 2009 Jean-Sébastien Graulich Slide 3 Detector DAQ Issues Feed back from user Need better handling of DAQ crashes Need loud, emphatic, and unambiguous indicators that data are or are not being recorded. MICE CM January 2009 Jean-Sébastien Graulich Slide 4 Target DAQ issues Progress slowed down Need consistent integration with the stand alone target DAQ We want a common software basis for file read/write operations Target DAQ under deep revision MICE CM January 2009 Jean-Sébastien Graulich Slide 5 Trigger Issues TOF0 and TOF1 trigger implemented Particle Trigger selection by hardware There is a plan to implement software selection Not a priority for the moment Particle Trigger pre-scaling Needed because of limitation on the DAQ input rate Need hardware intervention Not fully satisfactory -> Need investigation Need decision on the future of GVA1 Should it stay or should it go ? GVA2 and GVA3 are gone already MICE CM January 2009 Jean-Sébastien Graulich Slide 6 Burst Gate Correlation No progress achieved since CM22 GVA1 hit Burst Gate made narrow MICE CM January 2009 Jean-Sébastien Graulich Slide 7 Online Software Unpacking library needs upgrade Interface with G4MICE New fADC (V1731) for CKOV New version to be distributed next week First task is to reproduce online histograms (David Adey) See Software session for more details Know issues Online monitoring GUI tends to get stalled at the end of a run Online monitoring histograms are not labeled according to detector names That is a feature! Need better Online plots for fADC Current plots found not efficient in detecting broken channels Not straight forward task (fluctuating baseline) MICE CM January 2009 Jean-Sébastien Graulich Slide 8 Front End Electronics CKOV New 500 MHz fADC has been installed Performance has to be evaluated and compared to the previous scheme There is no more TDC data for CKOV TOF TOF TDCs are not properly synchronized. Internal clock has to be distributed. For the moment, we use the common Part. Trigger signal in ch0 of each TDC TOF2: We miss some electronics Shapers/Splitters: In production TDC: One board missing FADC: 3 boards missing SW (aka Electron Muon Ranger) A technical proposal has been submitted to the Technical board MICE CM January 2009 Jean-Sébastien Graulich Slide 9 FEE Issues Cross Talk Issue Not yet clearly understood New design is under study FADC firmware upgrade Needed to allow significant reduction of data volume Less samples per Particle event (currently 512 whereas only 60 are necessary Zero suppression (to be tested) Delicate operation Splitter/Shaper Production Board production is finished in Sofia Discrete components are in hand in Geneva Mounting will start in February Missing TDC/fADC Shouldbe ordered by Ludovico/Maurizio (funding issues) MICE CM January 2009 Jean-Sébastien Graulich Slide 10 Schedule Milestones From CM22 DAQ review Upgrade of fADC firmware CAM data in Online Data Stream DAQ migration to the DAQ/Control network Target DAQ included in Detector DAQ Tracker integrated in DAQ Tracker integrated in Online Monitoring TOF2 Shaper Production TOF TDC Clock Synchronization TOF1 in trigger system Burst Gate Signal in the Trigger System Approval of SW/EMR Front End Electronics Production of SW/EMR Front End Electronics Installation of the Online Reconstruction Farm MICE CM January 2009 Jean-Sébastien Graulich December 2009 November 4 Postponed October 30 November 4 ? ? Started – Dec 15 December 10 December 10 December 13 Early November ? June 2009 ? November-December Slide 11 Schedule Milestones New Milestones Target DAQ included in Detector DAQ DAQ migration to the DAQ/Control network Installation of the Online Reconstruction Farm Upgrade of fADC firmware TOF2 Shaper/Splitter Production CAM data in Online Data Stream Tracker integrated in DAQ and OLM TOF TDC Clock Synchronization mid February March 06 March 06 March 06 Started – mid March end of April end of April end of April DAQ review Burst Gate Signal in the Trigger System May 2009 need beam Approval of SW/EMR Front End Electronics Production of SW/EMR Front End Electronics depends on INFN September 2009 MICE CM January 2009 Jean-Sébastien Graulich Slide 12 Summary TOF1 has been integrated into DAQ, Trigger and OLM CKOV readout has been upgraded Many recent milestones have been missed Serious problem with event building discovered No real show stopper All key issues can be solved before serious things start in May 2009 Deserve serious attention First step is to get online diagnostic Target DAQ will be integrated to Detector DAQ Work still in progress FEE for SW/EMR and TOF2 are priority tasks Current DAQ issues can still be solved before Step 2 MICE CM January 2009 Jean-Sébastien Graulich Slide 13