Dresden 2026 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 2: Electron Accelerators and Sources II

AKBP 2.4: Vortrag

Montag, 9. März 2026, 12:00–12:15, SCH/A117

Status of the Hybrid Electron Gun Development at ELSA — •Samuel Kronenberg, Klaus Desch, Ben Simon Gatzsche, Philipp Hänisch, Dennis Proft, Yannick Schober, and Michael Switka — Physikalisches Institut, Universität Bonn

A redesign of the injector beamline for the S-band linac at ELSA is underway, including the replacement of the existing electron gun by a hybrid gun that combines thermionic emission and thermally assisted photoemission in a single setup. The goal is to offer a new single-bunch injection mode alongside the long pulse mode already provided by the current gun. Measurements have been conducted to verify this emission technique using caesium dispenser cathodes. The development of a dedicated test stand is currently being carried out to facilitate more detailed studies and serve as a prototype for the future injector section. Recent research has concentrated on the lattice and magnet design, as well as on evaluating suitable beam-diagnostic instrumentation.

Keywords: thermally assisted photoemission; electron gun; beam diagnostics