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

Astapovych, Daria ; Gjonaj, Erion ; De Gersem, Herbert (2021):
Investigation of Beam Impedance and Heat Load in a High Temperature Superconducting Undulator.
In: Proceedings of the 12th International Particle Accelerator Conference, pp. 2089-2092,
JACoW, 12th International Particle Accelerator Conference, virtual Conference, 24.-28.05.2021, ISBN 978-3-95450-214-1,
DOI: 10.18429/JACoW-IPAC2021-TUPAB267,
[Conference or Workshop Item]

Abstract

The use of high temperature superconducting (HTS) materials can en- hance 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 sys- tem 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 geo- metrical structure of the HTS tapes as well as the anomalous skin ef- fect. The results of the numerical investigation performed by the help of the CST PS solver will be presented and discussed

Item Type: Conference or Workshop Item
Erschienen: 2021
Creators: Astapovych, Daria ; Gjonaj, Erion ; De Gersem, Herbert
Title: Investigation of Beam Impedance and Heat Load in a High Temperature Superconducting Undulator
Language: English
Abstract:

The use of high temperature superconducting (HTS) materials can en- hance 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 sys- tem 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 geo- metrical structure of the HTS tapes as well as the anomalous skin ef- fect. The results of the numerical investigation performed by the help of the CST PS solver will be presented and discussed

Book Title: Proceedings of the 12th International Particle Accelerator Conference
Publisher: JACoW
ISBN: 978-3-95450-214-1
Divisions: 18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute of Electromagnetic Field Theory (from 01.01.2019 renamed Institute for Accelerator Science and Electromagnetic Fields)
Event Title: 12th International Particle Accelerator Conference
Event Location: virtual Conference
Event Dates: 24.-28.05.2021
Date Deposited: 30 Mar 2022 08:05
DOI: 10.18429/JACoW-IPAC2021-TUPAB267
Additional Information:

TEMF-Pub-DB TEMF002885

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