MEDSI2023 - List of Keywords (quadrupole)

Paper	Title	Other Keywords	Page
TUPYP021	Development and Improvement of HEPS Mover	GUI, sextupole, FEL, alignment	58
	S. Yang, S.Y. Chen, C.H. Li, Z.H. Wang, L. Wu, Y.D. Xu IHEP, Beijing, People’s Republic of China
	Funding: Supported by the National Natural Science Foundation of China (No.12105295) High Energy Photon Source (HEPS) has been constructed after decade of research. As the first diffraction-limited storage ring light source, many advanced devices are applied in this project, including the Beam Based Alignment Mover (Mover), which support and adjust the position of the Sextupole Magnet. It undertakes to remotely online adjust the position of Sextupole to meet the Physical requirement to correct the optics coefficient of Electron beam current. The positioning accuracy, attitude angle, and coupled error of Mover with 450kg load strictly proposed and tested during the development of Mover. There are three main types of Mover, including Four-layer with sliding guide, Three-layer with rolling guide, and Three-layer with sliding guide. This paper introduces the development and improvement of Mover.
	Poster TUPYP021 [0.842 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP021
About •	Received ※ 23 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 08 July 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPPP058	Permanent Magnets in SOLEIL II	dipole, lattice, synchrotron, permanent-magnet	240
	A. Berlioux, Y. Benyakhlef, C.A. Kitégi, F. Marteau, A. Mary, R.E. Raimon, M. Ribbens, K. Tavakoli SOLEIL, Gif-sur-Yvette, France
	Twenty years after SOLEIL Synchrotron was established, the facility needs to adapt to follow new scientific fields that have emerged since. The proposed new lattice for upgrading SOLEIL storage ring will reduce the horizontal emittance by a factor 50 to reach less than 100 pm.rad. This new lattice presents significant challenges and requires compact magnets that provide strong gradients. As a result, permanent magnet (PM) technology is preferred over electromagnet (EM) technology whenever possible. All sextupoles and octupoles will be EM to ensure efficient optic correction. However, all dipoles, reverse bends and quadrupoles will be PM. The replacement of aging infrastructure and the use of PM will lead to a noticeable reduction in SOLEIL’s electric power consumption and environmental footprint. SOLEIL II lattice consists of 116 dipoles with gradient and 354 PM quadrupoles which can also be used as reverse bends. All PM multipoles have been designed by SOLEIL¿s Mechanical Engineering Group in close collaboration with the Magnetic and Insertion Devices Group. This contribution will present the design, assembly procedure, and prototyping of SOLEIL II PM multipoles.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP058
About •	Received ※ 23 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 July 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPPP036	Prototype of High Stability Mechanical Support for SHINE Project	undulator, feedback, radiation, FEL	328
	R. Deng, H.X. Deng, F. Gao, X. Huang, Z. Lei, T.T. Zhen SARI-CAS, Pudong, Shanghai, People’s Republic of China
	Funding: CAS Project for Young Scientists in Basic Research (YSBR-042), National Natural Science Foundation of China (12125508, 11935020)¿Program of Shanghai Academic/Technology Research Leader (21XD1404100). Quadrupole stability of undulator segment is key to the beam performance in SHINE project. Vibration stability requirement of quadrupole is not larger than 200nm displacement RMS between 1 and 100Hz, but the field test of SHINE tunnel shows that the underground vibration during the day time is greater than 200nm. In this paper, a mechanical support including marble base and active vibration reduction platform is sophisticated designed. With this support, vibration stability of the key quadrupole is expected to be improved and the performances of the quadrupole meet the demands.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP036
About •	Received ※ 25 October 2023 — Revised ※ 07 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 12 January 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPPP037	A Micro-Vibration Active Control Method Based on Piezoelectric Ceramic Actuator	controls, ISOL, electron, free-electron-laser	330
	Z. Lei, H.X. Deng, R. Deng SARI-CAS, Pudong, Shanghai, People’s Republic of China
	Funding: This work was supported by the CAS Project for Young Scientists in Basic Research (YSBR-042), the National Natural Science Foundation of China (12125508, 11935020) In linear accelerator, ground vibration is transmitted to beam element (quadrupole magnet, etc.) through support, and then reflected to the influence of beam orbit or effective emittance. In order to reduce the influence of ground vibration on beam orbit stability, an active vibration isolation platform can be used. In this paper, an active vibration isolation system is proposed, which realizes the inverse dynamic process based on a nano-positioning platform and combines with a proportional controller to reduce the transmission of ground-based excitation to the beam element. The absolute vibration velocity signal obtained from the sensor is input to the controller as feedforward signal. The controller processes the input signal and then the output signal drives the piezoelectric ceramic actuator to generate displacement, realizing the active vibration control. The test results of the prototype show that the active vibration isolation system can achieve 50% displacement attenuation, which indicates that the vibration control strategy has certain engineering application value in the construction of large accelerators.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP037
About •	Received ※ 25 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 07 November 2023 — Issued ※ 15 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPPP046	Mechanical Design and Manufacture of Electromagnets in HEPS Storage Ring	storage-ring, sextupole, octupole, controls	339
	L. Wu, S.Y. Chen, C.H. Li, Y.D. Xu, S. Yang IHEP, Beijing, People’s Republic of China
	The HEPS storage ring comprises 48 7BA (seven-bend achromat) cells. There are 37 independent magnets in every cell, of which 5 dipoles are permanent magnets and the rest of magnets are all electromagnets including quad-rupoles, D-Q(dipole-quadrupole) combined magnets, sextupoles, octupoles and corrector magnets. These elec-tromagnets with small aperture and high magnetic field gradient should achieve high machining and assembly precision. In October 2023, all storage ring electromag-nets manufacturing have been completed. This paper mainly introduces the mechanical design, processing and assembly, and the manufacturing issues in the machining period.
	Poster THPPP046 [2.016 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP046
About •	Received ※ 24 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 January 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

TUPYP021

Development and Improvement of HEPS Mover

GUI, sextupole, FEL, alignment

58

S. Yang, S.Y. Chen, C.H. Li, Z.H. Wang, L. Wu, Y.D. Xu
IHEP, Beijing, People’s Republic of China

Funding: Supported by the National Natural Science Foundation of China (No.12105295)
High Energy Photon Source (HEPS) has been constructed after decade of research. As the first diffraction-limited storage ring light source, many advanced devices are applied in this project, including the Beam Based Alignment Mover (Mover), which support and adjust the position of the Sextupole Magnet. It undertakes to remotely online adjust the position of Sextupole to meet the Physical requirement to correct the optics coefficient of Electron beam current. The positioning accuracy, attitude angle, and coupled error of Mover with 450kg load strictly proposed and tested during the development of Mover. There are three main types of Mover, including Four-layer with sliding guide, Three-layer with rolling guide, and Three-layer with sliding guide. This paper introduces the development and improvement of Mover.

Poster TUPYP021 [0.842 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP021

About •

Received ※ 23 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 08 July 2024

Cite •

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

WEPPP058

Permanent Magnets in SOLEIL II

dipole, lattice, synchrotron, permanent-magnet

240

A. Berlioux, Y. Benyakhlef, C.A. Kitégi, F. Marteau, A. Mary, R.E. Raimon, M. Ribbens, K. Tavakoli
SOLEIL, Gif-sur-Yvette, France

Twenty years after SOLEIL Synchrotron was established, the facility needs to adapt to follow new scientific fields that have emerged since. The proposed new lattice for upgrading SOLEIL storage ring will reduce the horizontal emittance by a factor 50 to reach less than 100 pm.rad. This new lattice presents significant challenges and requires compact magnets that provide strong gradients. As a result, permanent magnet (PM) technology is preferred over electromagnet (EM) technology whenever possible. All sextupoles and octupoles will be EM to ensure efficient optic correction. However, all dipoles, reverse bends and quadrupoles will be PM. The replacement of aging infrastructure and the use of PM will lead to a noticeable reduction in SOLEIL’s electric power consumption and environmental footprint. SOLEIL II lattice consists of 116 dipoles with gradient and 354 PM quadrupoles which can also be used as reverse bends. All PM multipoles have been designed by SOLEIL¿s Mechanical Engineering Group in close collaboration with the Magnetic and Insertion Devices Group. This contribution will present the design, assembly procedure, and prototyping of SOLEIL II PM multipoles.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP058

About •

Received ※ 23 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 July 2024

Cite •

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

THPPP036

Prototype of High Stability Mechanical Support for SHINE Project

undulator, feedback, radiation, FEL

328

R. Deng, H.X. Deng, F. Gao, X. Huang, Z. Lei, T.T. Zhen
SARI-CAS, Pudong, Shanghai, People’s Republic of China

Funding: CAS Project for Young Scientists in Basic Research (YSBR-042), National Natural Science Foundation of China (12125508, 11935020)¿Program of Shanghai Academic/Technology Research Leader (21XD1404100).
Quadrupole stability of undulator segment is key to the beam performance in SHINE project. Vibration stability requirement of quadrupole is not larger than 200nm displacement RMS between 1 and 100Hz, but the field test of SHINE tunnel shows that the underground vibration during the day time is greater than 200nm. In this paper, a mechanical support including marble base and active vibration reduction platform is sophisticated designed. With this support, vibration stability of the key quadrupole is expected to be improved and the performances of the quadrupole meet the demands.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP036

About •

Received ※ 25 October 2023 — Revised ※ 07 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 12 January 2024

Cite •

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

THPPP037

A Micro-Vibration Active Control Method Based on Piezoelectric Ceramic Actuator

controls, ISOL, electron, free-electron-laser

330

Z. Lei, H.X. Deng, R. Deng
SARI-CAS, Pudong, Shanghai, People’s Republic of China

Funding: This work was supported by the CAS Project for Young Scientists in Basic Research (YSBR-042), the National Natural Science Foundation of China (12125508, 11935020)
In linear accelerator, ground vibration is transmitted to beam element (quadrupole magnet, etc.) through support, and then reflected to the influence of beam orbit or effective emittance. In order to reduce the influence of ground vibration on beam orbit stability, an active vibration isolation platform can be used. In this paper, an active vibration isolation system is proposed, which realizes the inverse dynamic process based on a nano-positioning platform and combines with a proportional controller to reduce the transmission of ground-based excitation to the beam element. The absolute vibration velocity signal obtained from the sensor is input to the controller as feedforward signal. The controller processes the input signal and then the output signal drives the piezoelectric ceramic actuator to generate displacement, realizing the active vibration control. The test results of the prototype show that the active vibration isolation system can achieve 50% displacement attenuation, which indicates that the vibration control strategy has certain engineering application value in the construction of large accelerators.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP037

About •

Received ※ 25 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 07 November 2023 — Issued ※ 15 December 2023

Cite •

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

THPPP046

Mechanical Design and Manufacture of Electromagnets in HEPS Storage Ring

storage-ring, sextupole, octupole, controls

339

L. Wu, S.Y. Chen, C.H. Li, Y.D. Xu, S. Yang
IHEP, Beijing, People’s Republic of China

The HEPS storage ring comprises 48 7BA (seven-bend achromat) cells. There are 37 independent magnets in every cell, of which 5 dipoles are permanent magnets and the rest of magnets are all electromagnets including quad-rupoles, D-Q(dipole-quadrupole) combined magnets, sextupoles, octupoles and corrector magnets. These elec-tromagnets with small aperture and high magnetic field gradient should achieve high machining and assembly precision. In October 2023, all storage ring electromag-nets manufacturing have been completed. This paper mainly introduces the mechanical design, processing and assembly, and the manufacturing issues in the machining period.

Poster THPPP046 [2.016 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP046

About •

Received ※ 24 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 January 2024

Cite •

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