Erlangen 2026 – scientific programme

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T: Fachverband Teilchenphysik

T 73: Calorimeters I

T 73.6: Talk

Thursday, March 19, 2026, 17:30–17:45, KH 01.012

Fast Hadron Shower Simulation Methods with the CALICE AHCAL Prototype — •André Wilhahn and Stan Lai — Georg-August-Universität Göttingen, Göttingen, Germany

Extensive simulations of particle showers are crucial for high energy physics experiments. As many calorimeters are designed with increasing granularity, while having to cope with higher energy deposits and higher luminosity conditions, the accurate simulation of particle showers in a computationally efficient manner is of utmost importance. This talk describes investigations into a data-driven fast calorimeter simulation that is meant to describe particle showers accurately, without simulating every individual particle interaction with the calorimeter material.

We start by investigating pion showers in the CALICE AHCAL (Analogue Hadron Calorimeter) prototype, which is a highly granular hadronic calorimeter comprising a total of 38 active layers embedded in a stainless-steel absorber structure. Each active layer contains a grid of 24×24 scintillator tiles that are read out individually via silicon photomultipliers. Correlated hit energies have been simulated to obtain good modelling for kinematic shower variables with the help of kernel density estimators. The results and future plans for improving and expanding the fast calorimeter simulation will be discussed.

Keywords: CALICE; Fast Simulation; Hadron Showers; Calorimeters