Dresden 2026 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 7: Ion and Medical Accelerators

AKBP 7.6: Vortrag

Dienstag, 10. März 2026, 15:15–15:30, SCH/A117

Advancements in Fast Extraction Methods of Short High Ity Pulses at ELSA for FLASH-RT Researchntensi — •Leonardo Thome, Klaus Desch, Dennis Proft, and Michael Switka — Physikalisches Institut der Universität Bonn

Studies investigating the FLASH effect for radiotherapy (FLASH-RT) are currently being carried out at the electron accelerator facility ELSA. In an initial operation mode, the booster synchrotron provides 1.2 GeV electron pulses of 250 ns duration for the irradiation of cell samples. To access higher beam energies up to 3.2 GeV and pulse lengths spanning from the nanosecond to the millisecond regime, this is complemented with a new developed fast extraction scheme from the stretcher ring. Current work focuses on repurposing the existing injection kickers to achieve single-turn or few-turn extraction. The extracted beam is characterized with charge and profile monitors. In parallel, the feasibility of faster resonant extraction techniques to provide spill durations up to several milliseconds is being investigated.

Keywords: Extraction method; Kicker; FLASH radiotherapy; Electron beam