# Applications of Permanent Magnets at the National Synchrotron Light Source-II

https://mdr.nims.go.jp/datasets/03c63262-3756-48c0-b9d7-cd7cadb3f9ea

## File

- [REPM2025_O6-3_Tanabe.pdf](https://mdr.nims.go.jp/filesets/b8dc02fb-9ae3-4ddf-93f8-2b272773e332/download) ([Detail](https://mdr.nims.go.jp/filesets/b8dc02fb-9ae3-4ddf-93f8-2b272773e332.md))
- [(abstract) O6-3_Figure1.jpeg](https://mdr.nims.go.jp/filesets/1cedee41-db8c-4c84-bfab-d002414dd9d7/download) ([Detail](https://mdr.nims.go.jp/filesets/1cedee41-db8c-4c84-bfab-d002414dd9d7.md))

## Id

03c63262-3756-48c0-b9d7-cd7cadb3f9ea

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-08-13T08:33:33.009675Z

## Updated at

2025-08-20T03:30:31.121704Z

## Published at

2025-08-20T03:19:19.224821Z

## Doi

https://doi.org/10.48505/nims.5652

## First published url



## Date published



## Recorded date published



## Resource type

conference_presentation

## Manuscript type

na

## Collection

- id: d28f086a-61aa-4bc7-bcae-5a1078cbc6c7
  identifier: https://mdr.nims.go.jp/pid/d28f086a-61aa-4bc7-bcae-5a1078cbc6c7
  title: The 28th International Workshop on Rare Earth and Future Permanent Magnets
    and Their Applications (REPM2025)

## Title

- title: Applications of Permanent Magnets at the National Synchrotron Light Source-II
  title_type: original
  lang: en

## Description

- description: "Permanent magnets (PMs) have been employed in various insertion devices
    at synchrotron light sources for many years. Nd2Fe14B magnets, enhanced through
    the Dy diffusion process, are utilized in both in-vacuum undulators. Cryogenic
    permanent magnet undulators [1] sometimes employ Pr2Fe14B or (NdxPr1-x)2Fe14B
    magnet to operate at the temperature lower than the value when Nd2Fe14B magnet
    starts exhibiting spin reorientation transition.The concept of the complex bend
    lattice has been proposed [2]. Unlike the conventional multi-bend achromat lattices
    commonly implemented in fourth-generation storage ring light sources, this design
    incorporates bending magnets composed of PM combined-function quadrupoles. For
    this application, Sm2Co17 magnets are employed to mitigate demagnetization effects
    and minimize temperature-dependent performance variations. Both pure PM structures,
    such as the modified Halbach-type configuration shown in Fig. 1, and hybrid structures
    have been investigated.This paper presents ongoing research and developments related
    to PM applications at the National Synchrotron Light Source-II (NSLS-II) at Brookhaven
    National Laboratory, USA.\r\n\r\n[1] T. Hara, et. al., “Cryogenic permanent undulators”,
    Phys. Rev. ST, Acc. and Beam, Vol. 7,\r\np.050720 (2004).\r\n[2] V. Smaluk, et.
    al., “ Realizing low-emittance lattice solution with complex bends,”\r\nProceedings
    of IPAC19, Melbourne, Australia, doi:10.18429/JACoW-IPAC2019-TUPRB105."
  description_type: abstract
  lang: en

## Creator

- name: Toshiya Tanabe
  role: author
  organization: Brookhaven National Laboratory, United States of America
- name: Dean Hidas
  role: author
  organization: Brookhaven National Laboratory, United States of America
- name: James Rank
  role: author
  organization: Brookhaven National Laboratory, United States of America
- name: Marco Musardo
  role: author
  organization: Brookhaven National Laboratory, United States of America
- name: Thomas Brookbank
  role: author
  organization: Brookhaven National Laboratory, United States of America
- name: Brian Eipper
  role: author
  organization: Brookhaven National Laboratory, United States of America
- name: Patrick N'Gotta
  role: author
  organization: Brookhaven National Laboratory, United States of America

## Contact agent



## Publisher

organization: National Institute for Materials Science (NIMS)

## Managing organization



## Keyword

- subject: REPM2025
  schema: not_defined
- subject: Accelerator
  schema: not_defined
- subject: Insertion Device
  schema: not_defined
- subject: lattice magnet
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal



## Conference

name: REPM2025
start_date: 2025-07-27
end_date: 2025-07-31
identifier: https://www.nims.go.jp/mmu/repm2025/

## Related item



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## Instrument



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



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## Fileset

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  filename: REPM2025_O6-3_Tanabe.pdf
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  size: 4751921
  md5: e1ff8eb9c37ab4f2c9606a1d0ff988cc
- id: 1cedee41-db8c-4c84-bfab-d002414dd9d7
  filename: "(abstract) O6-3_Figure1.jpeg"
  content_type: image/jpeg
  size: 9636
  md5: 4f4ded75cbf57dc74ccba00a0771d594

## Thumbnail

fileset_id: b8dc02fb-9ae3-4ddf-93f8-2b272773e332
filename: REPM2025_O6-3_Tanabe.pdf