17–22 May 2026
C.I.D
Europe/Zurich timezone

First Measurements of the Transient Electrical Near-Field of Electron Bunches in the FLUTE In-Air Section

WEP6049
20 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC6.T03: Beam Diagnostics and Instrumentation Poster session

Speaker

Stefan Funkner (Karlsruhe Institute of Technology)

Description

The Ferninfrarot Linac- und Test-Experiment (FLUTE) at the Karlsruhe Institute of Technology (KIT) is a compact linac test facility providing sub-picosecond to femtosecond short electron bunches with energies up to several tens of MeV. The transient electric near-field of such bunches is relevant for understanding coherent THz emission and for developing compact field-sensitive beam diagnostics. Here, we present first electro-optical measurements of bunch-induced near-field signals in the FLUTE in-air section using a photonic-integrated Mach-Zehnder-interferometer sensor placed close to the beam axis. The measured delay-dependent response shows features consistent with electro-optical detection of the transient electric near field of the bunch. Our results establish a basis for future spatially resolved measurements with varying accelerator parameters.

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Author

Stefan Funkner (Karlsruhe Institute of Technology)

Co-authors

Anke-Susanne Mueller (Karlsruhe Institute of Technology) Anton Malygin (Karlsruhe Institute of Technology) Erik Bruendermann (Karlsruhe Institute of Technology) Felipe Donoso (Karlsruhe Institute of Technology) Gudrun Niehues (Karlsruhe Institute of Technology) Ingrid Wilke (Rensselaer Polytechnic Institute) Dr Johannes Steinmann (Karlsruhe Institute of Technology) Micha Reissig (Karlsruhe Institute of Technology) Michael Nasse (Karlsruhe Institute of Technology) Payam Rabiei (Partow Technologies LLC) Robert Ruprecht (Karlsruhe Institute of Technology) Seyfollah Toroghi (Partow Technologies LLC)

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