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FM: Fachverband Funktionsmaterialien

FM 11: Poster Session Functional Materials

FM 11.26: Poster

Dienstag, 10. März 2026, 18:00–20:30, P4

Simulation-based optimization of gain characteristics for 3D-nanoprinted microchannel plates — •Kamila Murat, Kristian Deneke, Robert Zierold, Stefanie Haugg, and Robert H. Blick — Universität Hamburg, Hamburg, Germany

Microchannel plates (MCPs) are essential components for signal amplification. However, accurately modeling the complex electron multiplication processes represents one of the most demanding challenges.

Direct laser writing (DLW) techniques enable enhanced design freedom that extends beyond conventional glass-drawn MCPs, allowing the fabrication of structures with diverse materials and complex geometries. Since experimentally iterating such printed structures is both time-consuming and costly, numerical methods become crucial for development.

However, existing theoretical descriptions of electron multiplication remain incomplete and probabilistic, which presents a significant challenge for accurate simulations. To address this, we employ a finite-element-based simulation framework in COMSOL Multiphysics to model the electrostatic fields and electron transport in a 480 µm-long, 12 µm-diameter MCP channel biased at 1000 V. Within this configuration we investigate how geometry, bias voltage, and incidence energy influence electron trajectories and the total gain. To model the underlying electron avalanche mechanism driven by secondary electron emission (SEE), different theoretical models are evaluated to analyze the material-dependent SEE parameters. The resulting workflow establishes a scalable basis for extensions of the model.

Keywords: Microchannel plates simulation framework; Secondary electron emission; COMSOL Multiphysics simulation; Electron multiplication; Electron trajectory simulation