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Design and Fabrication Concepts of a Compact Undulator With Laser- Structured 2g-HTS Tapes

Will, Andreas; Bründermann, Erik ORCID iD icon; Müller, Anke-Susanne; Arndt, Tabea; Glamann, Nicole; Grau, Andreas Wolfgang; Krasch, Bennet ORCID iD icon; Nast, Rainer; Saez de Jauregui, David; Astapovych, Daria; De Gersem, Herbert; Gjonaj, Erion


To produce small-scale high-field undulators for table-top free electron lasers (FELs), compact designs have been proposed using high temperature superconducting (HTS) tapes, which show both large critical current densities and high critical magnetic fields with a total tape thickness of about 50 $\mu$m and a width of up to 12 mm. Instead of winding coils, a meander structure can be laser-scribed directly into the superconductor layer, guiding the current path on a quasi-sinusoidal trajectory. Stacking pairs of such scribed tapes allows the generation of the desired sinusoidal magnetic fields above the tape plane, along the tape axis. Two practically feasible designs are presented, which are currently under construction at KIT: A coil concept wound from a single structured tape with a length of 15 m, which is a progression of a design that has been presented already in the past, as well as a novel stacked and soldered design, made from 25 cm long structured tapes, soldered in a zig-zag-pattern. In this contribution the designs are briefly recapped and the experimental progress is presented.

Zugehörige Institution(en) am KIT Institut für Beschleunigerphysik und Technologie (IBPT)
Laboratorium für Applikationen der Synchrotronstrahlung (LAS)
Publikationstyp Poster
Publikationsjahr 2021
Sprache Englisch
Identifikator KITopen-ID: 1000137198
HGF-Programm 54.11.11 (POF IV, LK 01) Accelerator Operation, Research and Development
Veranstaltung 12th International Particle Accelerator Conference (IPAC 2021), Online, 24.05.2021 – 28.05.2021
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