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Title: High-temperature superconducting undulator magnets

Here, this paper presents test results on a prototype superconducting undulator magnet fabricated using 15% Zr-doped rare-earth barium copper oxide high temperature superconducting (HTS) tapes. On an 11-pole magnet we demonstrate an engineering current density, J e, of more than 2.1 kA mm -2 at 4.2 K, a value that is 40% higher than reached in comparable devices wound with NbTi-wire, which is used in all currently operating superconducting undulators. A novel winding scheme enabling the continuous winding of tape-shaped conductors into the intricate undulator magnets as well as a partial interlayer insulation procedure were essential in reaching this advance in performance. Currently, there are rapid advances in the performance of HTS; therefore, achieving even higher current densities in an undulator structure or/and operating it at temperatures higher than 4.2 K will be possible, which would substantially simplify the cryogenic design and reduce overall costs.
Authors:
 [1] ;  [2] ;  [2] ;  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Accelerator Systems Division
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Superconductor Science and Technology
Additional Journal Information:
Journal Volume: 30; Journal Issue: 4; Journal ID: ISSN 0953-2048
Publisher:
IOP Publishing
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1352893

Kesgin, Ibrahim, Kasa, Matthew, Ivanyushenkov, Yury, and Welp, Ulrich. High-temperature superconducting undulator magnets. United States: N. p., Web. doi:10.1088/1361-6668/aa5d48.
Kesgin, Ibrahim, Kasa, Matthew, Ivanyushenkov, Yury, & Welp, Ulrich. High-temperature superconducting undulator magnets. United States. doi:10.1088/1361-6668/aa5d48.
Kesgin, Ibrahim, Kasa, Matthew, Ivanyushenkov, Yury, and Welp, Ulrich. 2017. "High-temperature superconducting undulator magnets". United States. doi:10.1088/1361-6668/aa5d48. https://www.osti.gov/servlets/purl/1352893.
@article{osti_1352893,
title = {High-temperature superconducting undulator magnets},
author = {Kesgin, Ibrahim and Kasa, Matthew and Ivanyushenkov, Yury and Welp, Ulrich},
abstractNote = {Here, this paper presents test results on a prototype superconducting undulator magnet fabricated using 15% Zr-doped rare-earth barium copper oxide high temperature superconducting (HTS) tapes. On an 11-pole magnet we demonstrate an engineering current density, Je, of more than 2.1 kA mm-2 at 4.2 K, a value that is 40% higher than reached in comparable devices wound with NbTi-wire, which is used in all currently operating superconducting undulators. A novel winding scheme enabling the continuous winding of tape-shaped conductors into the intricate undulator magnets as well as a partial interlayer insulation procedure were essential in reaching this advance in performance. Currently, there are rapid advances in the performance of HTS; therefore, achieving even higher current densities in an undulator structure or/and operating it at temperatures higher than 4.2 K will be possible, which would substantially simplify the cryogenic design and reduce overall costs.},
doi = {10.1088/1361-6668/aa5d48},
journal = {Superconductor Science and Technology},
number = 4,
volume = 30,
place = {United States},
year = {2017},
month = {2}
}