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Particle Energy Loss in Calorimetry Study

Calculating energy loss of charged particles using Bethe-Bloch formula. Analyzing resolution as layers decrease in iron scintillator particles. Investigating nonlinearity sources in energy measurements.

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Particle Energy Loss in Calorimetry Study

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  1. OD Calorimetry Study Jaewon Park University of Rochester MINERvA/Jupiter Group Meeting, Mar 8, 2006

  2. Bethe-Bloch formula (Energy loss of charged particles) • dE/dx is assumed constant in the calculation. • In actual case, it’ll be one source of nonlinearity • Different particle has different dE/dx. In particle shower it’ll combination of them.

  3. Total Energy Loss Calculation iron scint particle

  4. Energy loss in each layer Pb Fe particle ID ECAL HCAL n: layer number (n=0,...,4)

  5. Energy resolution E (measured) E (true)

  6. E_measured vs. E_true

  7. E_measured vs. E_true (1 OD layer)

  8. Energy resolution E (measured) • Measured energy should collect all the energy? (y-intercept should be zero?) E (true)

  9. Energy resolution E (true) E (measured)

  10. Resolution as # layer decrease, not calibrated( CC, QE, old geom, 5.2PE/MeV)

  11. Resolution decrease due to leakage ( CC, QE, old geom, 5.2PE/MeV)

  12. Resolution as # layer decrease, not calibrated ( CC, QE, new geom, 5.2PE/MeV)

  13. Resolution decrease due to leakage ( CC, QE, new geom, 5.2PE/MeV)

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