ESRF-type lattice design and optimization for the High Energy Photon Source

Xu, Gang; Jiao, Yi; Peng, Yuemei

doi:10.1088/1674-1137/40/2/027001

Cited by 17 publications

(11 citation statements)

References 18 publications

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“…Recently a hybrid 7BA design with a natural emittance of 60.1 pmrad at 6 GeV was developed [23] for the HEPS. This design consists of 48 identical 7BAs and has a circumference of 1295.6 m. Each 7BA is about 27 m, with a 6-m straight section for insertion devices.…”

Section: Heps Design and Tracking Results With The Bare Latticementioning

confidence: 99%

Statistical analysis of the limitation of half integer resonances on the available momentum acceptance of the High Energy Photon Source

Jiao

Duan

2017

Nuclear Instruments and Methods in Physics Research Section A:

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Abstract：In a diffraction-limited storage ring (DLSR), the momentum acceptance (MA) might be limited by the half integer resonances (HIRs) excited by focusing errors, associated with the large detuning terms from the strong focusing and strong sextupoles required for an ultralow emittance. Taking the High Energy Photon Source (HEPS) as an example and through statistical analysis, we found that the horizontal HIRs have stronger impact on dynamics than the vertical ones; and the probability of MA reduction caused by a HIR is closely correlated with the level of the beta beats at the same plane, but independent of the error sources. For the HEPS design, to reach a small MA-reduction probability of about 1%, the rms amplitude of the beta beats at the nominal tunes should be kept below 1.5% horizontally and 2.5% vertically. The presented analysis can provide useful reference for other DLSR designs.

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Section: Heps Design and Tracking Results With The Bare Latticementioning

confidence: 99%

Statistical analysis of the limitation of half integer resonances on the available momentum acceptance of the High Energy Photon Source

Jiao

Duan

2017

Nuclear Instruments and Methods in Physics Research Section A:

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“…El diseño híbrido de ESRF-EBS [8,9] parece ser sencillo y atractivo para usarse en otros proyectos de sincrotrones [10][11][12]. La prominencia en la función de dispersión es atractiva para la correción cromática si adicionalmente se usa la transformación −I para sextupolos colocados en estas regiones.…”

Section: Modelos Tipo Esrf-ebsunclassified

Aspectos dinámicos en el diseño del anillo de almacenamiento del sincrotrón mexicano

Villarreal

Méndez

Fuentes

et al. 2022

Supl. Rev. Mex. Fis.

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Se investigan varios diseños de redes magnéticas para la fuente de luz sincrotrón mexicana, los cuales hacen uso de algunos recursos de diseño de las actualización recientes de fuentes de luz sincrotrón, tales como celdas acromáticas múltiples, dipolos con gradiente longitudinal, dipolos invertidos y esquemas híbridos. Mediante el uso de bloques fijos de imanes (tipo LEGO), también, se investiga la posibilidad de reducir aún más la emitancia de algunos diseños.

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“…In the linear optimization of such a lattice, all tunable parameters (exceeding 30), except the lengths of quadrupoles, sextupoles, anti-bends (which are adjusted to ensure that the magnetic parameters are within the engineering limits), and the long straight sections, are scanned. Some constraints for the magnets based on the limits of the HEPS [35,36], as well as the limits for the drift spaces are listed in Table 2.…”

Section: Linear Optics Designmentioning

confidence: 99%

“…Another method to reduce the damping time is to increase the energy loss per turn [36], which can be expressed as…”

Section: Linear Optics Designmentioning

confidence: 99%

Design study of APS-U-type hybrid-MBA lattice for mid-energy DLSR

2021

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In recent years, a new generation of storage ring-based light sources, known as diffractionlimited storage rings (DLSRs), whose emittance approaches the diffraction limit for the range of X-ray wavelengths of interest to the scientific community, has garnered significant attention worldwide. Researchers have begun to design and build DLSRs. Among various DLSR proposals, the hybrid multibend achromat (H-MBA) lattice enables sextupole strengths to be maintained at a reasonable level when minimizing the emittance; hence, it has been adopted in many DLSR designs. Based on the H-7BA lattice, the design of the Advanced Photon Source Upgrade Project (APS-U) can effectively reduce emittance by replacing six quadrupoles with anti-bends. Herein, we discuss the feasibility of designing an APS-U-type H-MBA lattice for the Southern Advanced Photon Source, a mid-energy DLSR light source with ultralow emittance that has been proposed to be built adjacent to the China Spallation Neutron Source. Both linear and nonlinear dynamics are optimized to obtain a detailed design of this type of lattice. The emittance is minimized, while a sufficiently large dynamic aperture (DA) and momentum acceptance (MA) are maintained. A design comprising 36 APS-U type H-7BAs, with an energy of 3 GeV and a circumference of 972 m, is achieved. The horizontal natural emittance is 20 pm•rad, with a horizontal DA of 5.8 mm, a vertical DA of 4.5 mm, and an MA of 4%, as well as a long longitudinal damping time of 120 ms. Subsequently, a few modifications are performed based on the APS-U-type lattice to reduce the longitudinal damping time from 120 to 44 ms while maintaining other performance parameters at the same level.

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ESRF-type lattice design and optimization for the High Energy Photon Source

Cited by 17 publications

References 18 publications

Statistical analysis of the limitation of half integer resonances on the available momentum acceptance of the High Energy Photon Source

Statistical analysis of the limitation of half integer resonances on the available momentum acceptance of the High Energy Photon Source

Aspectos dinámicos en el diseño del anillo de almacenamiento del sincrotrón mexicano

Design study of APS-U-type hybrid-MBA lattice for mid-energy DLSR

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