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Online Reconstruction Update

Online Reconstruction Update. Linda R. Coney UCR Mar 25, 2010. At Nov Collaboration Mtg. Now: Read out and decode DATE DAQ from MICE beam data (Online Mon) Can reconstruct TOF, CKOV, Tracker data offline Initial version of G4MICE Online Reconstruction Application v1 written

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Online Reconstruction Update

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  1. Online Reconstruction Update Linda R. Coney UCR Mar 25, 2010

  2. At Nov Collaboration Mtg • Now: • Read out and decode DATE DAQ from MICE beam data (Online Mon) • Can reconstruct TOF, CKOV, Tracker data offline • Initial version of G4MICE Online Reconstruction Application v1 written • Parallel processing solution possibility: PROOF • Next: • Implement online reconstruction for Step I • Goal to see first plots in MLCR by end November • Start with TOFs and CKOV • Gather more requests for Online Reco plots • Eventually: • Include necessary information for further steps • Routinely have shifters monitoring detectors and MICE physics in MLCR 2

  3. Online Reconstruction • Read data • Questions: Read from socket (as Online Monitoring) or from data file? • Issues: How read socket data? Will it affect DAQ? • Decision: Read directly from the socket. • From Online Reconstruction computers (remote read). • Reading from data file introduces data access complications. • Process data • Use only released version of reconstruction software • Online Reco in CVS • Offline reconstruction code used to process data, histograms specific to Online Reco produced • Application: OnlineReconstruction • Iterative process – initial version only has TOF information • Progress: • Official release made of G4MICE • Online Reco computers updated to this latest release • This includes OnlineReconstruction Application – and other analysis Applications 3

  4. Online Reconstruction2 • Create plots • Use Root – Parallel processing on the different online reco computers • PROOF is good way to accomplish this – Paul Kyberd • PROOF is installed on OnRec computers • not yet tested – single process so far • Save data • Online Reco root files will be saved along with the run data and the Online Monitoring files • OnRec.####.root • Already works for Data and Online Monitoring Files • No OnRec root files produced yet 4

  5. Online Reconstruction Now • Read data directly from the socket • Live data remotely accessed during every Run • (OnRec machines to DAQ machines) • G4MICE OnlineReconstruction Application installed with official release of software • Able to run any G4MICE Application using the DATE reader ONLINE • Online Reconstruction plots used to identify and diagnose problems during running • ex. Crate failure • Online Reco used to study beam dynamics • ex. Strange muon beam 5

  6. Online Now • Online Monitoring moved to OnRec machine • Ease burden on DAQ machine • Also reads from socket like OnlineReco • Online Monitoring running successfully • Addendum to OnMon instructions written and on MICO manuals page • Changes made to DateReader • (Vassil’s talk) • OnRec machines updated to cvs version 1.12.12 in order to support cvs repository • Instructions for running OnReco written 5

  7. Online Reconstruction in Action • Screen-shot of TofMonitor running online over live data during emittance measurement data-taking Dec09 6

  8. Online TofMonitor • Muon beamline 7

  9. Online Reconstruction ToDo • Enable live plotting for OnlineReconstruction Application (as works for TofMonitor) • Implement PROOF parallel processing • Improve flexibility of OnRec operating • Improve OnlineReconstruction Application to include more information • CKOV, KL, EMR, Tracker, Beam variables, etc. • Figure out how to do initial PID • Incorporate run conditions into online reconstruction (requires configuration database) • Implement modular code development structure 9

  10. Online ToDo • Finish writing description of plots • What should they look like • What do they mean • What should the shifters be looking for • If a problem occurs – what changes • Who do they call? • Determine if need more presets • Write detailed documentation of Online Reco for shifters • Improve OnlineReconstruction Application to include more information 9

  11. Conclusions • Now: • Good progress has been made! • Online Reconstruction regularly running during data-taking • Successfully produced first plots using TOFs • Next: • Increase ease of use • Implement modular code structure • Plot CKOV information..and more • Add to documentation • Eventually: • Include necessary information for further steps • Routinely have shifters monitoring detectors* and MICE physics in MLCR 10

  12. Online TofMonitor • Remaining issue: Need to understand which calibration to use • Beamline setup changing and trigger conditions changing • Implies changes to TOF calibration • Should be able to use most recent version – unless radical changes • Data-taking: electron beam 8

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