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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 10: Instrumentation and Beam Diagnostics II

AKBP 10.3: Talk

Wednesday, March 20, 2024, 17:45–18:00, E 020

Development of an Active Beam Stabilization System for Electrofission Experiments at the S-DALINAC — •Dominic Schneider, Michaela Arnold, Uwe Bonnes, Adrian Brauch, Manuel Dutine, Ruben Grewe, Lars Jürgensen, Norbert Pietralla, Felix Schließmann, and Gerhart Steinhilber — Technische Universität Darmstadt, Institute for Nuclear Physics, Darmstadt, Germany

The r-process fission cycle terminates the synthesis of heavy elements in binary neutron-star mergers. Fission processes of transuranium nuclides will be studied in electrofission reactions at the S-DALINAC. Due to the minuscule fissile target, the experimental setup requires an active electron-beam-stabilization system with high accuracy and a beam position resolution in the submillimeter range. Requirements and concepts for this system regarding beam diagnostics elements, feedback control and readout electronics will be presented. The usage of a cavity beam position monitor and optical transition radiation screens to monitor the required beam parameters will be discussed in detail. Additionally, various measurements performed at the S-DALINAC to assess requirements and limits for the beam-stabilization system will be presented. Finally, the option to use advanced machine learning methods, such as neural networks and agent-based reinforcement learning, will be discussed.

Work supported by DFG (GRK 2128), BMBF (05H21RDRB1), the State of Hesse within the Research Cluster ELEMENTS (Project ID 500/10.006) and the LOEWE Research Group Nuclear Photonics.

Keywords: Beam Position Monitor; S-DALINAC; Electrofission; Position; Control