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Status and Powering Test Results of HTS Undulator Coils at 77 K for Compact FEL Designs

Richter, S. C. ORCID iD icon 1; Ballarino, A.; Bernhard, A. ORCID iD icon 1; Müller, A-S. ORCID iD icon 1; Nes, T. H.; Schoerling, D.
1 Institut für Beschleunigerphysik und Technologie (IBPT), Karlsruher Institut für Technologie (KIT)

Abstract:

The production of low emittance positron beams for future linear and circular lepton colliders, like CLIC or FCC-ee, requires high-field damping wigglers. Just as compact free-electron lasers (FELs) require high-field but as well short-period undulators to emit high energetic, coherent photons. Using high-temperature superconductors (HTS) in the form of coated ReBCO tape superconductors allows higher magnetic field amplitudes at 4 K and larger operating margins as compared to low-temperature superconductors, like Nb-Ti. This contribution discusses the development work on superconducting vertical racetrack (VR) undulator coils, wound from coated ReBCO tape superconductors. The presented VR coils were modularly designed with a period length of 13 mm. Powering tests in liquid nitrogen of multiple vertical racetrack coils were performed at CERN. The results from the measurements are presented for three VR coils and compared with electromagnetic simulations.


Verlagsausgabe §
DOI: 10.5445/IR/1000149550
Veröffentlicht am 05.08.2022
Originalveröffentlichung
DOI: 10.18429/JACoW-IPAC2022-THPOPT058
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Beschleunigerphysik und Technologie (IBPT)
Laboratorium für Applikationen der Synchrotronstrahlung (LAS)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2022
Sprache Englisch
Identifikator ISBN: 978-3-9545022-7-1
ISSN: 2673-5490
KITopen-ID: 1000149550
HGF-Programm 54.11.11 (POF IV, LK 01) Accelerator Operation, Research and Development
Erschienen in 13th International Particle Accelerator Conference : June 12-17, 2022, Impact Forum, Muangthong Thani, Bangkok, Thailand : conference proceedings. Ed.: T. Chanwattana
Veranstaltung 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12.06.2022 – 17.06.2022
Verlag JACoW Publishing
Seiten 2726–2729
Serie International Particle Accelerator Conference
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