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arXiv · 1703.05246

Simulation study of energy resolution, position resolution and $π^0$-$γ$ separation of a sampling electromagnetic calorimeter at high energies

Ashim Roy·Shilpi Jain·Sunanda Banerjee·Satyaki Bhattacharya·Gobinda Majumder
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Abstract

A simulation study of energy resolution, position resolution, and $π^0$-$γ$ separation using multivariate methods of a sampling calorimeter is presented. As a realistic example, the geometry of the calorimeter is taken from the design geometry of the Shashlik calorimeter which was considered as a candidate for CMS endcap for the phase II of LHC running. The methods proposed in this paper can be easily adapted to various geometrical layouts of a sampling calorimeter. Energy resolution is studied for different layouts and different absorber-scintillator combinations of the Shashlik detector. It is shown that a boosted decision tree using fine grained information of the calorimeter can perform three times better than a cut-based method for separation of $π^0$ from $γ$ over a large energy range of 20 GeV-200 GeV.

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Ashim Roy, Shilpi Jain, Sunanda Banerjee, Satyaki Bhattacharya, Gobinda Majumder. 2017-06-21. Simulation study of energy resolution, position resolution and $π^0$-$γ$ separation of a sampling electromagnetic calorimeter at high energies. https://doi.org/10.1088/1748-0221%2F12%2F07%2Fp07013

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