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TP Calorimetry

This reference discusses a spike observed in MIP events without PE smearing. It explores a common block mistake and the use of RawHit for energy calculation. It also suggests some event selection criteria to analyze the spike.

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TP Calorimetry

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  1. TP Calorimetry Jaewon Park

  2. Reference (old plot, full minerva)

  3. MIP event without PE smearing? • Why it shows spike? (not zero values)

  4. Common common block mistake • I though the spike might be a bug in the code • In stead, I found the other bug • I used own common block to copy rawhit into buffer. • I thought 500 maxhit would be enough but tracker used higher limit (3500) • If rawhit is more than 500 (2-3% event), it overwrite other ntuple block.

  5. Ntuples • NT block • RawHit : geant true hit • CalObj : Probably PE smeared hit • DigHit : I don’t understand this. Energy entry holds integer. • In old study, I used CalObj block and occasionally RawHit block for consistency check. • Current code used RawHit to calculate energy. I don’t remember why I used RawHit. • Probably the format is slightly easier to use and I thought PE smearing is not big effect.

  6. Try to some event selection • Low energy criteria works.

  7. Leakage? • Probably we can do very much about higher energy proton (KE>300MeV)

  8. Require no proton hit in last layers • Requiring no proton hit in last some DS-Ecal layer • It helps a little bit.

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