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AKPIK: Arbeitskreis Physik, moderne Informationstechnologie und Künstliche Intelligenz
AKPIK 4: AKPIK III: Simulation & Application
AKPIK 4.2: Talk
Thursday, March 18, 2021, 16:15–16:30, AKPIKa
Fast simulation and validation of the Time of Propagation detector at Belle II — •Isabel Haide1, James Kahn1, Alex Hagen2, Jan Strube2, Shane Jackson2, Connor Hainje2, and Pablo Goldenzweig1 — 1Karlsruher Institut für Technologie — 2Pacific Northwest National Laboratory
The Geant4 based simulation of Cherenkov photons in the time-of-propagation (TOP) detector at the Belle II experiment is currently the largest contributor to the total event simulation time. Replacing conventional simulations with neural network solutions, also called generative models, for a reduced simulation time is being actively researched in most fields of particle physics.
This work investigates the replacement of the current Geant4 based TOP simulation with a generative model. Such generative models have to be validated against the system in place in order to verify when a solution is ready for production use. The goal of this work is to design an evaluation framework that determines the agreement between a neural network and the conventionally simulated output with a target towards generalization for other detectors.
This talk shows the current status of this evaluation framework for generative models for the TOP detector at Belle II. In the context of this framework, a new high dimensional Kolmogorov-Smirnov metric for probability distributions is presented.