MEDSI2020 - List of Keywords (emittance)

Paper	Title	Other Keywords	Page
MOPC12	A New Magnetic Measurement System for the Future Low Emittance NSLS-II Storage Ring	controls, quadrupole, dipole, alignment	78
	M. Musardo, T.M. Corwin, F.A. DePaola, L. Doom, R. Faussete, D.A. Harder, S.K. Sharma, T. Tanabe BNL, Upton, New York, USA D. Assell, J. DiMarco Fermilab, Batavia, Illinois, USA C.L. Doose, A.K. Jain ANL, Lemont, Illinois, USA
	Funding: This work was supported by DOE under contract DE-SC0012704 A new magnetic measurement system is under construc-tion at BNL for accurate field harmonic measurements and fiducialization of magnets for a future upgrade of the NSLS- II storage ring. The entire storage ring is envi-sioned to be replaced with a new lattice concept, known as Complex Bend, which superimposes dipole and high-gradient quadrupole fields. The magnetic measurement system will use rotating wire and a PCB rotating coil specifically designed for small-aperture (< 15 mm) high gradient magnets. In this paper we describe in detail the mechanical design and the data acquisition hardware and software.
	Poster MOPC12 [3.102 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPC12
About •	paper received ※ 15 July 2021 paper accepted ※ 13 October 2021 issue date ※ 03 November 2021
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPA12	The Design and Prototype Test for the Tunnel Foundation of High Energy Photon Source	storage-ring, ground-motion, site, photon	141
	F. Yan, X.P. Jing, G.P. Lin, J. Qiu, G. Xu, N.C. Zhou IHEP, Beijing, People’s Republic of China A.Z. Lu, Y.L. Xing, Z.G. Xu, Y.S. Zhang CEEDI, Beijing, People’s Republic of China
	High Energy Photon Source (HEPS) is being built in China with challenging beam stability requirements. To fulfil the 25 nm ground motion restriction on the storage ring tunnel slab, two prototype slabs with different design schemes were constructed on the HEPS site. The first scheme adopted a 1 m reinforced concrete with replace-ment layer of a 1 m sand & stone underneath. The second scheme employed an extra 5 m grouting layer below the previously mentioned two layers. A series of tests had been carried out. The prototype slab with grouting layer is testified to have comparable vibration level with the bare ground, which is under 25 nm without traffic inside the HEPS campus, while the vibration level is amplified a lot on the other prototype slab. However, it is hard to make the grouting layer homogeneously under the kilo-metre-scale tunnel and besides the cost is unacceptable for 5 m grouting with such a large scale. The finalized design is fixed to be a 1 m reinforced concrete slab and 3 m replacement layer underneath using plain concrete. In this paper, the details of the prototype slab test results will be presented.
	Poster TUPA12 [2.300 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPA12
About •	paper received ※ 20 July 2021 paper accepted ※ 17 September 2021 issue date ※ 08 November 2021
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPB06	Mechanical Design of the Booster to Storage Ring Transfer (BTS) Line for APS Upgrade	quadrupole, dipole, vacuum, storage-ring	279
	J. Liu, M. Borland, T.K. Clute, J.S. Downey, M.S. Jaski, U. Wienands ANL, Lemont, Illinois, USA
	Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357 APS Upgrade selected the horizontal injection scheme which requires exchanging the x and y emittances in the BTS transport line through a series of six skew quadrupoles, as well as matching the beam parameters to the APS Upgrade storage ring through two dipoles and a conventional pulsed septum. This paper presents the layout of this BTS line section in the storage ring tunnel and key components in this section including the mechanical design of dipole magnet, quadrupole and skew quad magnets, the vacuum system, the diagnostics system, and the supports. Finally, detailed mechanical design of this BTS line section in modules and some consideration for fabrication and installation are addressed.
	Poster WEPB06 [1.133 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPB06
About •	paper received ※ 26 July 2021 paper accepted ※ 19 October 2021 issue date ※ 03 November 2021
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THOB03	Innovative and Biologically Inspired Petra IV Girder Design	synchrotron, storage-ring, simulation, radiation	360
	S. Andresen Alfred-Wegener-Institut, Bremerhaven, Germany N. Meyners, D. Thoden DESY, Hamburg, Germany
	Funding: Deutsches Elektronen Synchrotron (DESY), a research centre of the Helmholtz Association - Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research DESY (Deutsches Elektronen Synchrotron) is currently expanding the PETRA III storage ring X-ray radiation source to a high-resolution 3D X-ray microscope providing all length scales from the atom to millimeters. This PETRA IV project involves an optimization of the girder magnet assemblies to reduce the impact of ambient vibrations on the particle beam. For this purpose, an innovative and biologically inspired girder structure has been developed. Beforehand, a large parametric study analyzed the impact of different loading and boundary conditions on the eigenfrequencies of a magnet-girder assembly. Subsequently, the girder design process was generated, which combined topology optimizations with biologically inspired structures (e.g., complex Voronoi combs, hierarchical structures, and smooth connections) and cross section optimizations using genetic algorithms to obtain a girder magnet assembly with high eigenfrequencies, a high stiffness, and reduced weight. The girder was successfully manufactured from gray cast iron and first vibration experiments have been conducted to validate the simulations.
	Slides THOB03 [4.169 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-THOB03
About •	paper received ※ 28 July 2021 paper accepted ※ 28 September 2021 issue date ※ 08 November 2021
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOPC12

A New Magnetic Measurement System for the Future Low Emittance NSLS-II Storage Ring

controls, quadrupole, dipole, alignment

78

M. Musardo, T.M. Corwin, F.A. DePaola, L. Doom, R. Faussete, D.A. Harder, S.K. Sharma, T. Tanabe
BNL, Upton, New York, USA
D. Assell, J. DiMarco
Fermilab, Batavia, Illinois, USA
C.L. Doose, A.K. Jain
ANL, Lemont, Illinois, USA

Funding: This work was supported by DOE under contract DE-SC0012704
A new magnetic measurement system is under construc-tion at BNL for accurate field harmonic measurements and fiducialization of magnets for a future upgrade of the NSLS- II storage ring. The entire storage ring is envi-sioned to be replaced with a new lattice concept, known as Complex Bend, which superimposes dipole and high-gradient quadrupole fields. The magnetic measurement system will use rotating wire and a PCB rotating coil specifically designed for small-aperture (< 15 mm) high gradient magnets. In this paper we describe in detail the mechanical design and the data acquisition hardware and software.

Poster MOPC12 [3.102 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPC12

About •

paper received ※ 15 July 2021 paper accepted ※ 13 October 2021 issue date ※ 03 November 2021

Export •

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

TUPA12

The Design and Prototype Test for the Tunnel Foundation of High Energy Photon Source

storage-ring, ground-motion, site, photon

141

F. Yan, X.P. Jing, G.P. Lin, J. Qiu, G. Xu, N.C. Zhou
IHEP, Beijing, People’s Republic of China
A.Z. Lu, Y.L. Xing, Z.G. Xu, Y.S. Zhang
CEEDI, Beijing, People’s Republic of China

High Energy Photon Source (HEPS) is being built in China with challenging beam stability requirements. To fulfil the 25 nm ground motion restriction on the storage ring tunnel slab, two prototype slabs with different design schemes were constructed on the HEPS site. The first scheme adopted a 1 m reinforced concrete with replace-ment layer of a 1 m sand & stone underneath. The second scheme employed an extra 5 m grouting layer below the previously mentioned two layers. A series of tests had been carried out. The prototype slab with grouting layer is testified to have comparable vibration level with the bare ground, which is under 25 nm without traffic inside the HEPS campus, while the vibration level is amplified a lot on the other prototype slab. However, it is hard to make the grouting layer homogeneously under the kilo-metre-scale tunnel and besides the cost is unacceptable for 5 m grouting with such a large scale. The finalized design is fixed to be a 1 m reinforced concrete slab and 3 m replacement layer underneath using plain concrete. In this paper, the details of the prototype slab test results will be presented.

Poster TUPA12 [2.300 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPA12

About •

paper received ※ 20 July 2021 paper accepted ※ 17 September 2021 issue date ※ 08 November 2021

Export •

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

WEPB06

Mechanical Design of the Booster to Storage Ring Transfer (BTS) Line for APS Upgrade

quadrupole, dipole, vacuum, storage-ring

279

J. Liu, M. Borland, T.K. Clute, J.S. Downey, M.S. Jaski, U. Wienands
ANL, Lemont, Illinois, USA

Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357
APS Upgrade selected the horizontal injection scheme which requires exchanging the x and y emittances in the BTS transport line through a series of six skew quadrupoles, as well as matching the beam parameters to the APS Upgrade storage ring through two dipoles and a conventional pulsed septum. This paper presents the layout of this BTS line section in the storage ring tunnel and key components in this section including the mechanical design of dipole magnet, quadrupole and skew quad magnets, the vacuum system, the diagnostics system, and the supports. Finally, detailed mechanical design of this BTS line section in modules and some consideration for fabrication and installation are addressed.

Poster WEPB06 [1.133 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPB06

About •

paper received ※ 26 July 2021 paper accepted ※ 19 October 2021 issue date ※ 03 November 2021

Export •

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

THOB03

Innovative and Biologically Inspired Petra IV Girder Design

synchrotron, storage-ring, simulation, radiation

360

S. Andresen
Alfred-Wegener-Institut, Bremerhaven, Germany
N. Meyners, D. Thoden
DESY, Hamburg, Germany

Funding: Deutsches Elektronen Synchrotron (DESY), a research centre of the Helmholtz Association - Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research
DESY (Deutsches Elektronen Synchrotron) is currently expanding the PETRA III storage ring X-ray radiation source to a high-resolution 3D X-ray microscope providing all length scales from the atom to millimeters. This PETRA IV project involves an optimization of the girder magnet assemblies to reduce the impact of ambient vibrations on the particle beam. For this purpose, an innovative and biologically inspired girder structure has been developed. Beforehand, a large parametric study analyzed the impact of different loading and boundary conditions on the eigenfrequencies of a magnet-girder assembly. Subsequently, the girder design process was generated, which combined topology optimizations with biologically inspired structures (e.g., complex Voronoi combs, hierarchical structures, and smooth connections) and cross section optimizations using genetic algorithms to obtain a girder magnet assembly with high eigenfrequencies, a high stiffness, and reduced weight. The girder was successfully manufactured from gray cast iron and first vibration experiments have been conducted to validate the simulations.

Slides THOB03 [4.169 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-THOB03

About •

paper received ※ 28 July 2021 paper accepted ※ 28 September 2021 issue date ※ 08 November 2021

Export •

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