München 2019 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 15: Poster session

AKBP 15.6: Poster

Thursday, March 21, 2019, 16:30–18:00, Durchgangshalle

First Operational Experience and Magnetic Characterization of a Superconducting Transverse Gradient Undulator for a Compact Laser Wakefield Acceleration-Driven FELs — •Kantaphon Damminsek, Axel Bernhard, Sebastian Richter, Maisui Ning, and Anke-Susanne Müller — Karlsruhe Institute of Technology, Karlsruhe, Germany

The application of Laser Wakefield Acceleration (LWFA) is a potential key for realizing extremely compact Free electron Lasers (FELs) due to an unprecedented high longitudinal electric field inside the laser-driven plasma wave. LWFA-generated electron beams exhibit challenging initial conditions in terms of beam divergence and energy spread. The transverse gradient undulator (TGU) scheme is a viable option to compensate the challenging properties of the LWFA electron beam to enable FELs amplification. At Karlsruhe Institute of Technology (KIT, Germany), a 40-period superconducting TGU has been designed and built. In this contribution, we report on the first test operation of this superconducting TGU in its own conduction-based cryostat, the quench tests performed in this configuration and first results of the two-dimensional Hall probe mapping of the TGU field.