FLS2023 - List of Keywords (quadrupole)

Paper	Title	Other Keywords	Page
TU1B3	Nonlinear Optics From Hybrid Dispersive Orbits	sextupole, optics, lattice, storage-ring	62
	Y. Li, R.S. Rainer, V.V. Smaluk, D. Xu BNL, Upton, New York, USA
	Funding: Supported by US DoE under Contract No. DE-SC0012704 In this paper we present an expansion of the technique of characterizing nonlinear optics from off-energy orbits (NOECO) to cover harmonic sextupoles in storage rings. The existing NOECO technique has been successfully used to correct the chromatic sextupole errors on the MAX-IV machine, however, it did not account for harmonic sextupoles, which are widely used on many other machines. Through generating vertical dispersion with chromatic skew quadrupoles, a measurable dependence of nonlinear optics on harmonic sextupoles can be observed from hybrid horizontal and vertical dispersive orbits. Proof of concept of our expanded technique was accomplished by simulations and beam measurements on the National Synchrotron Light Source II (NSLS-II) storage ring.
	Slides TU1B3 [1.428 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-FLS2023-TU1B3
About •	Received ※ 18 August 2023 — Revised ※ 20 August 2023 — Accepted ※ 31 August 2023 — Issued ※ 02 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TU4P20	Simulated Commissioning for Diamond-II Storage Ring from On-axis to Off-axis Injection	MMI, closed-orbit, simulation, injection	124
	H.-C. Chao, I.P.S. Martin DLS, Oxfordshire, United Kingdom
	The Diamond-II storage ring commissioning simulations have continued based on the previous results where on-axis injected beams are captured. The next goal is to enlarge the dynamic aperture so that off-axis injection can be achieved. The procedures include beam based alignment, beta-beating correction and linear optics correction. Details of the implementations are discussed and the simulation results are presented. In the end, we are able to reach off-axis injection which allows accumulation.
DOI •	reference for this paper ※ doi:10.18429/JACoW-FLS2023-TU4P20
About •	Received ※ 22 August 2023 — Revised ※ 30 August 2023 — Accepted ※ 31 August 2023 — Issued ※ 02 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TU4P26	Special Operational Modes for SLS 2.0	brightness, lattice, photon, emittance	127
	J. Kallestrup, M. Aiba PSI, Villigen PSI, Switzerland
	The SLS 2.0 storage ring will achieve low emittance and high brightness while maintaining large dynamic aperture and lifetime comparable to the present SLS. Special operational modes are investigated to further explore the potential of the lattice. In this contribution, the first considerations on such modes for the SLS 2.0 are outlined. A promising high-brightness mode, increasing brightness by up to 25% at insertion devices with minor deterioration to dynamic and momentum aperture is presented. The use of round-beams and its impact on beam dynamics and the beamlines in the SLS 2.0 portfolio is discussed.
DOI •	reference for this paper ※ doi:10.18429/JACoW-FLS2023-TU4P26
About •	Received ※ 27 July 2023 — Revised ※ 24 August 2023 — Accepted ※ 31 August 2023 — Issued ※ 02 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WE4P31	Deterministic Approach to the Lattice Design of BESSY III	lattice, sextupole, emittance, dynamic-aperture	203
	B.C. Kuske, P. Goslawski HZB, Berlin, Germany
	Funding: Work supported by German Bundesministerium für Bildung und Forschung, Land Berlin, and grants of Helmholtz Association Since 2021 HZB pursues the design of a 2.5 GeV storage ring as a successor of BESSY II in Berlin. The user’s demand for diffraction-limited radiation at 1 keV corresponds to an emittance of 100 pm, making an MBA lattice indispensable. The envisaged location limits the circumference to ~350 m. MBA lattices are composed of smaller substructures that can be analyzed and optimized separately, before combining them into one super period. The prerequisite for this approach is a clear idea of the goal parameters and their prioritization, as the design process is dominated by permanent decisions between different options. The resulting generic baseline lattice for BESSY III is a simple structure with few non-linear elements, already fulfilling all goal parameters and showing a very compatible nonlinear behavior. This is our starting point for further optimizations including swarm or MOGA approaches.
DOI •	reference for this paper ※ doi:10.18429/JACoW-FLS2023-WE4P31
About •	Received ※ 30 August 2023 — Revised ※ 30 August 2023 — Accepted ※ 01 September 2023 — Issued ※ 02 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

TU1B3

Nonlinear Optics From Hybrid Dispersive Orbits

sextupole, optics, lattice, storage-ring

62

Y. Li, R.S. Rainer, V.V. Smaluk, D. Xu
BNL, Upton, New York, USA

Funding: Supported by US DoE under Contract No. DE-SC0012704
In this paper we present an expansion of the technique of characterizing nonlinear optics from off-energy orbits (NOECO) to cover harmonic sextupoles in storage rings. The existing NOECO technique has been successfully used to correct the chromatic sextupole errors on the MAX-IV machine, however, it did not account for harmonic sextupoles, which are widely used on many other machines. Through generating vertical dispersion with chromatic skew quadrupoles, a measurable dependence of nonlinear optics on harmonic sextupoles can be observed from hybrid horizontal and vertical dispersive orbits. Proof of concept of our expanded technique was accomplished by simulations and beam measurements on the National Synchrotron Light Source II (NSLS-II) storage ring.

Slides TU1B3 [1.428 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-FLS2023-TU1B3

About •

Received ※ 18 August 2023 — Revised ※ 20 August 2023 — Accepted ※ 31 August 2023 — Issued ※ 02 December 2023

Cite •

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

TU4P20

Simulated Commissioning for Diamond-II Storage Ring from On-axis to Off-axis Injection

MMI, closed-orbit, simulation, injection

124

H.-C. Chao, I.P.S. Martin
DLS, Oxfordshire, United Kingdom

The Diamond-II storage ring commissioning simulations have continued based on the previous results where on-axis injected beams are captured. The next goal is to enlarge the dynamic aperture so that off-axis injection can be achieved. The procedures include beam based alignment, beta-beating correction and linear optics correction. Details of the implementations are discussed and the simulation results are presented. In the end, we are able to reach off-axis injection which allows accumulation.

DOI •

reference for this paper ※ doi:10.18429/JACoW-FLS2023-TU4P20

About •

Received ※ 22 August 2023 — Revised ※ 30 August 2023 — Accepted ※ 31 August 2023 — Issued ※ 02 December 2023

Cite •

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

TU4P26

Special Operational Modes for SLS 2.0

brightness, lattice, photon, emittance

127

J. Kallestrup, M. Aiba
PSI, Villigen PSI, Switzerland

The SLS 2.0 storage ring will achieve low emittance and high brightness while maintaining large dynamic aperture and lifetime comparable to the present SLS. Special operational modes are investigated to further explore the potential of the lattice. In this contribution, the first considerations on such modes for the SLS 2.0 are outlined. A promising high-brightness mode, increasing brightness by up to 25% at insertion devices with minor deterioration to dynamic and momentum aperture is presented. The use of round-beams and its impact on beam dynamics and the beamlines in the SLS 2.0 portfolio is discussed.

DOI •

reference for this paper ※ doi:10.18429/JACoW-FLS2023-TU4P26

About •

Received ※ 27 July 2023 — Revised ※ 24 August 2023 — Accepted ※ 31 August 2023 — Issued ※ 02 December 2023

Cite •

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

WE4P31

Deterministic Approach to the Lattice Design of BESSY III

lattice, sextupole, emittance, dynamic-aperture

203

B.C. Kuske, P. Goslawski
HZB, Berlin, Germany

Funding: Work supported by German Bundesministerium für Bildung und Forschung, Land Berlin, and grants of Helmholtz Association
Since 2021 HZB pursues the design of a 2.5 GeV storage ring as a successor of BESSY II in Berlin. The user’s demand for diffraction-limited radiation at 1 keV corresponds to an emittance of 100 pm, making an MBA lattice indispensable. The envisaged location limits the circumference to ~350 m. MBA lattices are composed of smaller substructures that can be analyzed and optimized separately, before combining them into one super period. The prerequisite for this approach is a clear idea of the goal parameters and their prioritization, as the design process is dominated by permanent decisions between different options. The resulting generic baseline lattice for BESSY III is a simple structure with few non-linear elements, already fulfilling all goal parameters and showing a very compatible nonlinear behavior. This is our starting point for further optimizations including swarm or MOGA approaches.

DOI •

reference for this paper ※ doi:10.18429/JACoW-FLS2023-WE4P31

About •

Received ※ 30 August 2023 — Revised ※ 30 August 2023 — Accepted ※ 01 September 2023 — Issued ※ 02 December 2023

Cite •

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