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EMEC presampler monitoring tools

Report on existing monitoring tools for EMEC Presampler noise stability analysis, calibration runs processing, tool adaptation, and channels grouping.

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EMEC presampler monitoring tools

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  1. EMEC presampler monitoring tools Ilya Orlov Budker Institute of Nuclear Physics Novosibirsk, Russia STATUS REPORT

  2. Existing monitoring tools • Calibration ntuples monitoring • Combining the existing ROOT monitoring package with the calibration ntuples • Presampler noise stability monitoring • Quick visualization of histograms after converting • You need to waste time on converting only once • Reusage of the existing monitoring interface

  3. Situation RUN recording • Physics (cosmics) runs: • Automatic processing • Results put in ROOT file (histograms ) • Channel-based • FT/slot-based • Summaries • ROOT monitoring interface • Calibration runs: • Automatic processing • Results in ROOT files (FT/slot-based ntuples) • Lack of appropriate interface for monitoring Processing Monitoring

  4. RUN recording The task • To create the conversion tool for calibration ntuples to monitoring histos OR • To adapt the existing ROOT monitoring interface Processing Calibration ntuples Conversion Monitoring (adapted) Monitoring histos Monitoring (existing)

  5. Converting files • Minuses: • Quite a long process (~ 40 min / run) • Large size of result file (~ 1.5 Gb / run) • Pluses: • Quick visualization of histograms after converting • You need to waste time on converting only once • Reusage of the existing monitoring interface

  6. Adapting the interface • Minuses: • Quite a long building of summary histograms • Need to alter the existing (and working) macros • Pluses: • No need of separate temporary files • No need to waste time on converting • Glancing on the separate channel is fast

  7. Status • Decision: to implement both options… • Now (1.11.09): • Conversion tool for Wave monitoring histograms is ready and works for athena 15.5.0 • The existing interface is modified to correspond to athena-15.5.0 calibration ntuples • Usage: • The tool + the monitoring interface will be used while analyzing the calibration runs in “maintenance mode”

  8. Presampler noise monitoring • Work on noise monitoring tools started by Victor Bobrovnikov • Analysis of coherent and non-coherent noises in EMEC presampler • Time stability of noises • Analysis of correlation between noise sources

  9. Current status • Victor: • Tools creation • September 2008, June – July 2009 cosmics • Ilya: • Tools update • September 2009 cosmics • Olga: • October 2009 etc.

  10. Noise monitoring tools update • Update to athena 15.5.0 • was 15.3.0 – some formats were changed • Reading of ESDs & AODs • The usage of AODs for noise analysis delivers some troubles, but is much much faster • Proper work with GRID Tier0 files • Now it works properly with new locations of runs

  11. September 2009 cosmics Channels grouping by HV and FT doesn’t show any significant differences.

  12. Noises stability over time

  13. Noises stability over time

  14. Conclusion • The noises from EMEC PS are very stable • Mean noises values are around 111 MeV • Noises means and sigmas are very stable over time, even considering the interval of ~ 1 year • We have the set of tools for noise stability analysis: • Coherent and incoherent noises • Noises time stability • Can be used not only for EMEC PS

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