Difference between revisions of "Offline Analysis Commissioning"

Revision as of 18:12, 23 September 2014

Introduction

This document describes the goals of the data monitoring that will be carried out during the fall 2014 commissioning run of Hall D.

Raw Data

• These questions are for every detector system: TAGH, TAGM, CDC, FDC, SC, TOF, BCAL, FCAL, PS (Pair Spectrometer)

Commissioning Tests

• Are the detectors working?
  • Do all of the channels have hits?
  • What are the hit counts/rates per channel?
  • Are the energies & times OK, garbage, or out of range? (by channel)
• Can we read data from tape?
• Can we reproduce the online histograms with offline data?

Offline Monitoring Plan

• Pull key data/histograms from online histograms, put data in database, make history & plots viewable on webpage
• Periodically test that we can reproduce online histograms using on-tape EVIO data.

Action Items

• David: Online data monitoring environment (RootSpy, hdview2, etc.)
  • David is updating RootSpy and its documentation/instructions.
  • When he's finished, he'll contact the different detector groups and remind them to write their online monitoring plugins.
  • Make sure online monitoring histograms are archived somewhere.

• Detector groups:
  • Writing the monitoring plugins for their systems.
  • Determining which plots are the primary plots (most important for shift-takers) and which are diagnostic plots.
  • Integrating their histograms into RootSpy.

Reconstruction Quality Monitoring

Commissioning Tests

• What is the calibration quality of each system?
• Can we perform reconstruction for each system? (Tracks, showers, etc.)
• Are there any regions of the detector where reconstruction is inefficient?
• Are tracks being properly matched to hits in the other detectors?
• What is the quality of the particle ID?

Offline Monitoring Plan

• Periodically submit jobs to monitor calibration & reconstruction quality of data on tape.
  • Just a file or two from each run.
  • Submit either at some fixed-time interval (every 2 weeks?) or perhaps after big changes.
  • Save key data in database, make history & key plots viewable on webpage
• When ready to do full reconstruction, run calibration & reconstruction quality plugins on all files, save key data to database & make viewable on webpage.

Action Items

• Paul: Will integrate the monitoring_hists plugin (reconstruction) plots into RootSpy.
  • Will run full reconstruction over a small % of online data.

• Detector groups:
  • Writing the calibration scripts/programs/plugins for their systems.
  • Determining which plots are the primary plots and which are diagnostic plots.

Analysis Quality Monitoring

Commissioning Tests

• Can we see π⁰ peaks
• Can we see simple final states
  • γ p → p π⁺ π^-
  • γ p → p π⁺ π^- π⁰
  • γ p → p π⁺ π^- η

Offline Monitoring Plan

• Periodically submit analysis jobs to study π⁰'s and simple final states.
  • Make key plots viewable on webpage.