MEDSI2018 - List of Keywords (sextupole)

Paper	Title	Other Keywords	Page
TUPH17	Design Considerations Associated with the Replacement of a Sextupole Magnet by a Short Wiggler in a Cell of the Diamond Storage Ring Lattice	wiggler, storage-ring, dipole, photon	63
	N.P. Hammond, I.P.S. Martin DLS, Oxfordshire, United Kingdom
	Now that all of the original straight sections in the Diamond storage ring are occupied, novel ways of converting bending magnet beamline locations into insertion device beamlines have been considered. Recently one cell of the 24 cells was reconfigured in to a Double-Double Bend Achromat (DDBA) to provide a new location for an Undulator and enable a formerly designated bending magnet beamline to become an Insertion Device Beamline. Extending this concept for the new Dual Imaging and Diffraction (DIAD) Beamline proved to have a strong impact on lifetime and injection efficiency, so instead it was decided to remove a Sextupole magnet in one cell and substitute it with a short fixed gap Wiggler. The accelerator physics, mechanical and electrical design aspects associated with the change are described. Mechanical Engineering solutions for the Diamond DDBA Project, J Kay, MEDSI 2014
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH17
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPH23	Field Quality From Tolerance Analyses in Two-Half Sextuple Magnet	alignment, factory, multipole, lattice	78
	J. Liu, R.J. Dejus, A.T. Donnelly, C.L. Doose, A.K. Jain, M.S. Jaski ANL, Argonne, Illinois, USA
	Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357 Sextupole magnets are used extensively in particle ac-celerators, synchrotrons, and storage rings. Good magnet-ic field quality is needed in these magnets, which requires machining the magnet parts to high precision and is the primary driver of the high fabrication costs. To minimize the fabrication costs, a magnetic field quality study from tolerance analyses was conducted. In this paper, finite element analysis (FEA) using OPERA was performed to identify key geometric factors that affect the magnetic field quality and identify the allowable range for these factors. Next, geometric and dimensional tolerance stack-up analyses are carried out using Teamcenter Variation Analysis to optimize the allocation of the geometric tol-erances to parts and assemblies. Finally, the analysis re-sults are compared to magnetic measurements of a R&D sextupole magnet.
	Poster TUPH23 [1.027 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH23
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPH38	Preliminary Design of the Magnets of HALS	quadrupole, dipole, HOM, multipole	129
	B. Zhang, Z.L. Ren, X.Q. Wang, Y. Wang, H. Xu USTC/NSRL, Hefei, Anhui, People's Republic of China
	The Hefei Advanced Light Source (HALS) is a future soft X-ray diffraction-limited storage ring at National Synchrotron Radiation Laboratory (NSRL) of China. This project aims to improve the brilliance and coherence of the X-ray beams and to decrease the horizontal emittance. The lattice of the HALS ring relies on magnets with demanding specifications, including combined function dipole-quadrupoles (DQs) with high gradients, dipoles with longitudinal gradients (DLs), high gradient quadrupoles and sextupoles. All these magnets have been designed using POSSION and Radia. Preliminary design of them are presented in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH38
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

Design Considerations Associated with the Replacement of a Sextupole Magnet by a Short Wiggler in a Cell of the Diamond Storage Ring Lattice

wiggler, storage-ring, dipole, photon

63

N.P. Hammond, I.P.S. Martin
DLS, Oxfordshire, United Kingdom

Now that all of the original straight sections in the Diamond storage ring are occupied, novel ways of converting bending magnet beamline locations into insertion device beamlines have been considered. Recently one cell of the 24 cells was reconfigured in to a Double-Double Bend Achromat (DDBA) to provide a new location for an Undulator and enable a formerly designated bending magnet beamline to become an Insertion Device Beamline*. Extending this concept for the new Dual Imaging and Diffraction (DIAD) Beamline proved to have a strong impact on lifetime and injection efficiency, so instead it was decided to remove a Sextupole magnet in one cell and substitute it with a short fixed gap Wiggler. The accelerator physics, mechanical and electrical design aspects associated with the change are described.
* Mechanical Engineering solutions for the Diamond DDBA Project, J Kay, MEDSI 2014

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH17

Export •

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

TUPH23

Field Quality From Tolerance Analyses in Two-Half Sextuple Magnet

alignment, factory, multipole, lattice

78

J. Liu, R.J. Dejus, A.T. Donnelly, C.L. Doose, A.K. Jain, M.S. Jaski
ANL, Argonne, Illinois, USA

Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357
Sextupole magnets are used extensively in particle ac-celerators, synchrotrons, and storage rings. Good magnet-ic field quality is needed in these magnets, which requires machining the magnet parts to high precision and is the primary driver of the high fabrication costs. To minimize the fabrication costs, a magnetic field quality study from tolerance analyses was conducted. In this paper, finite element analysis (FEA) using OPERA was performed to identify key geometric factors that affect the magnetic field quality and identify the allowable range for these factors. Next, geometric and dimensional tolerance stack-up analyses are carried out using Teamcenter Variation Analysis to optimize the allocation of the geometric tol-erances to parts and assemblies. Finally, the analysis re-sults are compared to magnetic measurements of a R&D sextupole magnet.

Poster TUPH23 [1.027 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH23

Export •

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

TUPH38

Preliminary Design of the Magnets of HALS

quadrupole, dipole, HOM, multipole

129

B. Zhang, Z.L. Ren, X.Q. Wang, Y. Wang, H. Xu
USTC/NSRL, Hefei, Anhui, People's Republic of China

The Hefei Advanced Light Source (HALS) is a future soft X-ray diffraction-limited storage ring at National Synchrotron Radiation Laboratory (NSRL) of China. This project aims to improve the brilliance and coherence of the X-ray beams and to decrease the horizontal emittance. The lattice of the HALS ring relies on magnets with demanding specifications, including combined function dipole-quadrupoles (DQs) with high gradients, dipoles with longitudinal gradients (DLs), high gradient quadrupoles and sextupoles. All these magnets have been designed using POSSION and Radia. Preliminary design of them are presented in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH38

Export •

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