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Investigation of Beam Impedance and Heat Load in a High Temperature Superconducting Undulator

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


The use of high temperature superconducting (HTS) materials can enhance the performance of superconducting undulators (SCU), which can later be implemented in free electron laser facilities, synchrotron storage rings and light sources. In particular, the short period < 10 mm undulators with narrow magnetic gap < 4 mm are relevant. One of the promising approaches considers a 10 cm meander-structured HTS tapes stacked one above the other. Then, the HTS tape is wound on the SCU. The idea of this jointless undulator has been proposed by, and is being further developed at KIT. Since minimizing the different sources of heat load is a critical issue for all SCUs, a detailed analysis of the impedance and heat load is required to meet the cryogenic system design. The dominant heat source is anticipated to be the resistive surface loss, which is one of the subjects of this study. Considering the complexity of the HTS tape, the impedance model includes the geometrical structure of the HTS tapes as well as the anomalous skin effect. The results of the numerical investigation performed by the help of the CST PS solver will be presented and discussed.

Verlagsausgabe §
DOI: 10.5445/IR/1000138603
Veröffentlicht am 05.10.2021
DOI: 10.18429/JACoW-IPAC2021-TUPAB267
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Beschleunigerphysik und Technologie (IBPT)
Laboratorium für Applikationen der Synchrotronstrahlung (LAS)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2021
Sprache Englisch
Identifikator ISBN: 978-3-95450-214-1
KITopen-ID: 1000138603
HGF-Programm 54.11.11 (POF IV, LK 01) Accelerator Operation, Research and Development
Erschienen in 12th International Particle Accelerator Conference : virtual edition, May 24th-28th, 2021, Brazil : proceedings volume / IPAC2021. Ed.: R. Picoreti
Veranstaltung 12th International Particle Accelerator Conference (IPAC 2021), Online, 24.05.2021 – 28.05.2021
Verlag JACoW Publishing
Seiten 2089-2092
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