Erlangen 2026 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 16: Search for Dark Matter I

T 16.8: Vortrag

Montag, 16. März 2026, 18:00–18:15, AM 00.014

ImpCresst - A versatile simulation tool focusing on cryogenic solid-state detectors at sub-MeV energies — •Holger Kluck for the CRESST collaboration — Marietta-Blau-Institut für Teilchenphysik der Österreichischen Akademie der Wissenschaften, 1010 Wien, Österreich

We present ImpCresst, a Geant4 based Monte Carlo tool to simulate radioactive and cosmogenic backgrounds in cryogenic solid-state detectors. It is tuned for a fast-evolving and heterogeneous detector environment with a focus on physics at the sub-MeV level. ImpCresst was developed for the CRESST experiment and proved its suitability there. However, its flexibility and configurability makes it adaptable to any other experiment with a similar profile of requirements: dynamical creation of detector geometries, optionally directly from CAD files; ROOT based data persistency of the whole simulated event topology; automatic metadata annotation for data provenance; and interfacing various particle generators specialized for radioactive and cosmogenic background sources. Especially for radioactive bulk and surface contaminations, we developed a new and convenient particle generator. Detector-specific energy and time resolutions are flexibly applied based on a user-provided data set of empirical parameterization.

Keywords: Rare event search; Background simulation; Radioactive contaminiation; Geant4