IPAC2022 - Classification: MC7: Accelerator Technology / T10: Superconducting Magnets

Paper	Title	Page
THOYSP3	Progress on the Nb₃Sn Superconducting Undulator Development at the Advanced Photon Source
	I. Kesgin, E. Gluskin, Q.B. Hasse, Y. Ivanyushenkov, M. Kasa, S.W.T. MacDonald, Y. Shiroyanagi ANL, Lemont, Illinois, USA D. Arbelaez, S. Prestemon LBNL, Berkeley, California, USA E.Z. Barzi, D. Turrioni, A.V. Zlobin Fermilab, Batavia, Illinois, USA
	Funding: This work was supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-ACO₂-O6CH11357. The Nb₃Sn-based superconducting undulator (SCU) is a strong candidate to outperform its well-establish counterparts, such as the NbTi-based SCU and cryogenically cooled permanent magnet undulators, over a wide range of undulator period lengths: 10 mm or larger. Thus, the Advanced Photon Source (APS) at Argonne National Laboratory has initiated a project, in collaboration with Fermilab and Berkeley Lab, aiming to establish a robust technology for the fabrication of a Nb₃Sn SCU and validate its operational and radiation performance on the APS storage ring. To accomplish this, first, modeling-driven optimizations were employed to address the magnetic and mechanical design of the undulator magnets, and a series of 4.5-period prototypes subsequently confirmed the design specifications. Then, these short prototypes were successfully scaled to 0.5-m-long magnets, confirming the maximum design field of 1.2 T that is at least 20% higher than a NbTi version with the same gap and period length (9.5 mm and 18 mm, respectively). Fabrication of the final 1.1-m-long magnets is currently underway. Further details will be presented.
	Slides THOYSP3 [1.547 MB]
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THPOPT031	SUNDAE1: A Liquid Helium Vertical Test-Stand for 2m Long Superconducting Undulator Coils	2646
	B. Marchetti, S. Abeghyan, J.E. Baader, S. Casalbuoni, M. Di Felice, U. Englisch, V. Grattoni, D. La Civita, M. Vannoni, M. Yakopov, P. Ziolkowski EuXFEL, Schenefeld, Germany S. Barbanotti, H.-J. Eckoldt, A. Hauberg, K. Jensch, S. Lederer, L. Lilje, R. Ramalingam, T. Schnautz, R. Zimmermann DESY, Hamburg, Germany A.W. Grau KIT, Karlsruhe, Germany
	Superconducting Undulators (SCUs) can produce higher photon flux and cover a wider photon energy range compared to permanent magnet undulators (PMUs) with the same vacuum gap and period length. To build the know-how to implement superconducting undulators for future upgrades of the European XFEL facility, two magnetic measurement test stands named SUNDAE 1 and 2 (Superconducting UNDulAtor Experiment) are being developed. SUNDAE1 will facilitate research and development on magnet design thanks to the possibility of training new SCU coils and characterizing their magnetic field. The experimental setup will allow the characterization of magnets up to 2m in length. These magnets will be immersed in a Helium bath at 2K or 4K temperature. In this article, we describe the experimental setup and highlight its expected performances.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-THPOPT031
About •	Received ※ 03 June 2022 — Revised ※ 17 June 2022 — Accepted ※ 17 June 2022 — Issue date ※ 17 June 2022
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THPOTK013	Cold Test Results of the FAIR Super-FRS First-of-Series Multiplets and Dipole	2796
	A. Chiuchiolo, A. Beaumont, E.J. Cho, F. Greiner, P. Kosek, M. Michels, H. Müller, C. Roux, H. Simon, K. Sugita, V. Velonas, F. Wamers, M. Winkler, Y. Xiang GSI, Darmstadt, Germany H. Allain, V. Kleymenov, A. Madur CEA-IRFU, Gif-sur-Yvette, France
	Within the collaboration between GSI and CERN, a dedicated cryogenic test facility has been built at CERN (Geneva, Switzerland) in order to perform the site acceptance tests of the 56 Superconducting FRagment Separator cryomodules before their installation at the the Facility for Antiproton and Ion Research (Darmstadt, Germany). Two of the three benches of the CERN test facility were successfully commissioned with the powering tests of the first-of-series multiplets and dipole. The long multiplet, with a warm bore radius of 192 mm, is composed of nine magnets of different type (quadrupole, sextupole, steering dipole and octupole) assembled with Nb-Ti racetrack and cosine-theta coils, mounted in a cold iron yoke and in a common cryostat. This work presents the first results of the cold powering tests at 4.5 K during which dedicated measurements have been implemented for the magnetic characterization of the single magnets up to nominal current (300 A for a long quadrupole) and the study of their crosstalk effects. The results of the acceptance tests will be presented together with the challenges and lessons learnt during the facility commissioning.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-THPOTK013
About •	Received ※ 08 June 2022 — Revised ※ 14 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 23 June 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

THOYSP3

Progress on the Nb₃Sn Superconducting Undulator Development at the Advanced Photon Source

I. Kesgin, E. Gluskin, Q.B. Hasse, Y. Ivanyushenkov, M. Kasa, S.W.T. MacDonald, Y. Shiroyanagi
ANL, Lemont, Illinois, USA
D. Arbelaez, S. Prestemon
LBNL, Berkeley, California, USA
E.Z. Barzi, D. Turrioni, A.V. Zlobin
Fermilab, Batavia, Illinois, USA

Funding: This work was supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-ACO₂-O6CH11357.
The Nb₃Sn-based superconducting undulator (SCU) is a strong candidate to outperform its well-establish counterparts, such as the NbTi-based SCU and cryogenically cooled permanent magnet undulators, over a wide range of undulator period lengths: 10 mm or larger. Thus, the Advanced Photon Source (APS) at Argonne National Laboratory has initiated a project, in collaboration with Fermilab and Berkeley Lab, aiming to establish a robust technology for the fabrication of a Nb₃Sn SCU and validate its operational and radiation performance on the APS storage ring. To accomplish this, first, modeling-driven optimizations were employed to address the magnetic and mechanical design of the undulator magnets, and a series of 4.5-period prototypes subsequently confirmed the design specifications. Then, these short prototypes were successfully scaled to 0.5-m-long magnets, confirming the maximum design field of 1.2 T that is at least 20% higher than a NbTi version with the same gap and period length (9.5 mm and 18 mm, respectively). Fabrication of the final 1.1-m-long magnets is currently underway. Further details will be presented.

Slides THOYSP3 [1.547 MB]

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPOPT031

SUNDAE1: A Liquid Helium Vertical Test-Stand for 2m Long Superconducting Undulator Coils

2646

B. Marchetti, S. Abeghyan, J.E. Baader, S. Casalbuoni, M. Di Felice, U. Englisch, V. Grattoni, D. La Civita, M. Vannoni, M. Yakopov, P. Ziolkowski
EuXFEL, Schenefeld, Germany
S. Barbanotti, H.-J. Eckoldt, A. Hauberg, K. Jensch, S. Lederer, L. Lilje, R. Ramalingam, T. Schnautz, R. Zimmermann
DESY, Hamburg, Germany
A.W. Grau
KIT, Karlsruhe, Germany

Superconducting Undulators (SCUs) can produce higher photon flux and cover a wider photon energy range compared to permanent magnet undulators (PMUs) with the same vacuum gap and period length. To build the know-how to implement superconducting undulators for future upgrades of the European XFEL facility, two magnetic measurement test stands named SUNDAE 1 and 2 (Superconducting UNDulAtor Experiment) are being developed. SUNDAE1 will facilitate research and development on magnet design thanks to the possibility of training new SCU coils and characterizing their magnetic field. The experimental setup will allow the characterization of magnets up to 2m in length. These magnets will be immersed in a Helium bath at 2K or 4K temperature. In this article, we describe the experimental setup and highlight its expected performances.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-THPOPT031

About •

Received ※ 03 June 2022 — Revised ※ 17 June 2022 — Accepted ※ 17 June 2022 — Issue date ※ 17 June 2022

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPOTK013

Cold Test Results of the FAIR Super-FRS First-of-Series Multiplets and Dipole

2796

A. Chiuchiolo, A. Beaumont, E.J. Cho, F. Greiner, P. Kosek, M. Michels, H. Müller, C. Roux, H. Simon, K. Sugita, V. Velonas, F. Wamers, M. Winkler, Y. Xiang
GSI, Darmstadt, Germany
H. Allain, V. Kleymenov, A. Madur
CEA-IRFU, Gif-sur-Yvette, France

Within the collaboration between GSI and CERN, a dedicated cryogenic test facility has been built at CERN (Geneva, Switzerland) in order to perform the site acceptance tests of the 56 Superconducting FRagment Separator cryomodules before their installation at the the Facility for Antiproton and Ion Research (Darmstadt, Germany). Two of the three benches of the CERN test facility were successfully commissioned with the powering tests of the first-of-series multiplets and dipole. The long multiplet, with a warm bore radius of 192 mm, is composed of nine magnets of different type (quadrupole, sextupole, steering dipole and octupole) assembled with Nb-Ti racetrack and cosine-theta coils, mounted in a cold iron yoke and in a common cryostat. This work presents the first results of the cold powering tests at 4.5 K during which dedicated measurements have been implemented for the magnetic characterization of the single magnets up to nominal current (300 A for a long quadrupole) and the study of their crosstalk effects. The results of the acceptance tests will be presented together with the challenges and lessons learnt during the facility commissioning.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-THPOTK013

About •

Received ※ 08 June 2022 — Revised ※ 14 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 23 June 2022

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)