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A. A. Savchenko et al., “Geant4 Simulations of the Lead Fluoride Calorimeter”,

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A. A. Savchenko et al., “Geant4 Simulations of the Lead Fluoride Calorimeter”,

July 3, 2018      No Comments
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A. A. Savchenko et al., "Geant4 Simulations of the Lead Fluoride Calorimeter",

In this paper we simulate the emission by charged particles in complex structures with help of Geant4. We take into account Cherenkov radiation, transition radiation, bremsstrahlung, pair production and other accompanying processes. As an application we investigate the full size electromagnetic calorimeter for the muon g-2 experiment at Fermilab. A calorimeter module (24 are expected in the experiment) consists of a
Delrin front panel for installation of the laser calibration system, 54 PbF2 Cherenkov crystals wrapped by black paper, and silicon photo-multiplier sensors. We report here on a simulation of radiation from positrons striking the calorimeter system. We carry out the simulation using the Geant4 toolkit, which provides a complete set of tools for all areas of detector simulation: geometry, tracking, detector response, run, event
and track management, and visualization. We consider Cherenkov photons expansion when a positron moves down through the calorimeter at the arbitrary angle of incidence. Both spectral and angular distributions of Cherenkov optical photons in different parts of the calorimeter system have been evaluated as well as the transition radiation and pre-shower distributions from the panel and from the Al vacuum chamber of the storage ring.

Published on Nucl. Instrum. Met. B402 (2017) 256. (Publication date July 2017).

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