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A: Fachverband Atomphysik

A 15: Poster – Highly Charged Ions and their Applications

A 15.2: Poster

Dienstag, 3. März 2026, 17:00–19:00, Philo 1. OG

Optimised Y-bender design for efficient ion transport — •Sophia Dorra, Stepan Kokh, Magdalena Winkelvoss, Anton Sterr, Melina Gizewski, Finja Mayer, Maili Schube, José Ramon Crespo López-Urrutia, Thomas Pfeifer, and Vera Schäfer — Max-Planck-Institut für Kernphysik, Heidelberg, Germany

Precision spectroscopy to search for possible variations of the fine-structure constant α require atomic systems with strong relativistic level shifts. Highly charged ions (HCIs) are ideal candidates, but experiments involving rare isotopes such as californium demand efficient production, transport, and retrapping of HCIs. In our setup, HCIs are generated in an electron beam ion trap (EBIT) and subsequently transferred to one of two Paul traps for high-precision spectroscopy of selected transition frequencies.

To maximize the overall transmission efficiency from the EBIT to the trapping region, we are developing a new Y-bender beamline element composed of two symmetric 45^∘ electrostatic benders. This design enables deflection of the HCI beam to either side while preserving beam quality and improving transport efficiency compared to a single 90^∘ deflection. As a preparatory step toward constructing the Y-bender, we investigate the geometric and electrostatic properties of a previously used 90^∘ bender. The goal of these measurements and simulations is to understand how electrode geometry influences beam focusing and transmission in order to optimize the design of our 45^∘ bender modules.

Keywords: HCIs; Ionoptics; Beamline; EBIT; Bender