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Advanced CaTS and Dual Readout CaTS: Detailed Calorimeter and Tracker Simulation Techniques

This document outlines the CaTS (Calorimeter and Tracker Simulation) project, detailing the detector configurations specified in gdml files, which capture sensitive detector types including TrackerSD, CalorimeterSD, and PhotonSD. It emphasizes the use of ROOT for creating class dictionaries for persistent Hit data analyses, measuring energy deposition, and performance metrics like resolution and effective shower radius through Cherenkov tagging. The report discusses experimental setups with various absorber thicknesses to enhance understanding of particle behavior and calibration in calorimetry.

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Advanced CaTS and Dual Readout CaTS: Detailed Calorimeter and Tracker Simulation Techniques

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  1. CaTS and Dual Readout

  2. CaTS – Calorimeter and Tracker Simulation • http://home.fnal.gov/~wenzel/CaTS.html • Describe detector in gdml file (xml like) • Define sensitive detector types • TrackerSD(Hit) • CalorimeterSD(Hit) • DRCalorimeterSD(Hit) (Calorimeter + counts produced Cerenkov photons) • StoppingCalorimeterSD (kills particle after registering total energy) • PhotonSD(Hit): sensitive detector that registers optical photons.

  3. CaTS - Output • uses Root reflexion (gccxml) to automatically create dictionaries for all Hit classes to make the Hits persistent and stores the result in a ROOT file. • Analysis Module allows output of more specific data that is not contained in the Hits class (generation process, particle types) • Hits Class contains SD Type, Location + detector specific data

  4. Tiled Sampling Detector • 1.01m x 1.01m, 1 cm square tiles • 1.5 m total absorber width (brass) • Separate runs with different absorber • 25 mm, 50 mm and 75 mm per layer. • Total absorber kept constant. • Each layer detectors: • 7 mm quartz & 5 mm scintillator. • Count only Cerenkov photons and ionization

  5. Procedure • Protons only at fixed energy. • Measure energy content, and size of the shower where Cherenkov is used to tag the energy deposition. • Measure resolution of shower with the reduced shower radius.

  6. Std Dev/Mean vs EnergyVaried Absorber Thickness 25 mm 50 mm Whole Detector 20cm x 20 cm window All Scintillation Scintillation Tagged w/ Cerenkov 75 mm

  7. Ring Definition • Test Beam Axis • Ring 0 • Ring 1 • Ring 2 • etc…

  8. Percentage of Energy per RingDifferent Abs Thick 25 mm 50 mm 75 mm

  9. Percentage of Energy per RingDifferent Energies

  10. Conclusions and Plans • With Cherenkov tagging effective radius of shower is significantly reduced. • Move to actual HE configuration. • Study flow inside the calorimeter. • Overlapping particles.

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