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Past Calorimeter Software Improvements

p11 Non-linearity corrections Offline zero suppression (but “<“ not “<=“) Tweak of calorimeter layer weights Correction of ICD layer map Added better noise simulation file (symmetrized in phi) p13 Further corrections for electronic weighting factors in ICR (5pF  10pF)

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Past Calorimeter Software Improvements

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  1. p11 Non-linearity corrections Offline zero suppression (but “<“ not “<=“) Tweak of calorimeter layer weights Correction of ICD layer map Added better noise simulation file (symmetrized in phi) p13 Further corrections for electronic weighting factors in ICR (5pF 10pF) ICD weight increased 35% Rewrite of pileup noise simulation GeV  Raw ADC Individual noise channels used in MC Can add raw data or simulated noise Same noise file used for both simulation (LADC) and zero suppression (RADC) Correct offline zero suppression cut Correct switch of gain x8/x1 in MC and add persistence for all levels Apply zero suppression to MC Past Calorimeter Software Improvements Calorimeter Software Status

  2. p13.00-07 packing at d0gstar was 16-bit; corrected in p13.08 Raw2Sim packing also corrected Do we need 32-bit information at DST level? Cleanup of weights – kept in two separate packages (caldata and caltables) Maintenance nightmare? Ensure unpacking MC data is consistent with pileup NLS is not tracked correctly ICD channels need correction factor for 22pF/5pF from calibration Ongoing work in online software Cal_examine Cal_elec Hot cell killer L3CalCalib Pedestal download Online database storage p13 Leftovers Calorimeter Software Status

  3. Obtain zero suppression thresholds, NLC coefficients, offline pedestal and gain corrections from calibration database Need to track stability Provide persistent data structures for all packages to use Allow for different weighting of layers (and eta’s?) for zero suppression CH layers may need different suppression Higher suppression at high eta’s suggested (|eta| > 3.2) History tracking for different reco versions rather cumbersome to maintain Channel to channel calibration corrections for ICD NADA style block for T42 scheme Implement CH-seed weights Consistent handling of CalDataChunk for all object reconstruction Future developments Calorimeter Software Status

  4. Improving Calorimeter Data • Error checking • ADC readout error flags • Timeouts • Event mixing between crates • Set error flag on event • Can flag bad data blocks if too high a rate for data quality? • How does this affect luminosity? • Data Quality and stability improvements • In-spill unsuppressed data • Useful for online monitoring • Preprocess to create offline pedestal correction and kill hot-cells before reco • needs to be in DB? • What rate is needed and impact on online? • Calibrate individual SCA channels and correct? • Use d0cert packages in offline farms • Need quick feedback back into the online Calorimeter Software Status

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