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Novel calorimeter concepts under consideration for future lepton collider experiments are aimed to achieve high energy resolution for single hadrons and for hadronic jets. The energy resolution improvement is achieved by reading out two different signal components: Szintilation light which is proportional to the energy deposited via ionization and Cerenkov light which is used as an estimator of the energy loss due to nuclear processes. The cerenkov signal can be used to correct the energy deposit as measured by the szintilation signal.
Reconstruction of jet-jet invariant mass in a segmented total absorption dual read out calorimeter is investigated in a specific example of the crystal-based calorimeter for the SiD detector. The detector geometry is defined and the detector simulation is carried out within the geant 4 based SLIC (Simulation for LInear Collider) framework.
The analysis programs are developed in JAVA within the JAS3 (Java Analys Studio)
environment.
Correlation between the total observed ionization energy and the electromagnetic component of the shower, as measured by the Cherenkov component. The calibration factor K is determined by the requirement that K×ECherenkov = Eionization for electrons.
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Material | Density | Radiation length | Interaction length | ||
|---|---|---|---|---|---|
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| [g/cm3] | [cm] | [cm] | ]]></ac:plain-text-body></ac:structured-macro> |
BGO | 7.13 | 1.12 | 21.88 | ||
PbWO4 | 8.3 | 0.9 | 18. | ||
SCG1-C | 3.36 | 4.25 | 45.6 |
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| BGO |
| PbWO4 |
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Detector | Layers | Thickness/layer | Segmentation | X0 | Lambda | X0 | Lambda | ||
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| [cm] | [cmxcm] |
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ECAL Barrel | 8 | 3 | 3x3 | 21.4 | 1.1 | 27 | 1.3 | ||
HCAL Barrel | 17 | 6 | 6x6 |
| 4.7 |
| 5.7 | ||
Total Barrel | 25 |
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| 5.8 |
| 7 | ||
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ECAL EndCAP | 8 | 3 | 3x3 | 21.4 | 1.1 | 27 | 1.3 | ||
HCAL EndCAP | 17 | 6 | 6x6 |
| 4.7 |
| 5.7 | ||
Total EndCAP | 25 |
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| 5.8 |
| 7 |
How to run the simulation
The shell script below demonstartes demonstrates how to run slic using the ccal02 geometry. For Note for a dual readout calorimeter it is important that the
/physics/enableOptical flag is set otherwise no Cherenkov photons will be created!
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