Designing an Ultra Low Emittance Lattices for Iranian Light Source Facility Storage Ring

Ahmadi, E.; Ghasem, Hossein; Jafarzadeh, Morteza; Jazayeri, S. M.; Rahighi, J.

doi:10.18429/jacow-ipac2016-wepow016

Cited by 3 publications

(3 citation statements)

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“…The storage ring's lattice consists of 20 five-bend achromats separated by 7 m straight sections for IDs. Figure 1 shows a three dimensional view of one achromat [8]. Since the initiation of ILSF project, through several meetings held with the participation of international experts, the consensus was reached collectively for the establishment of several beamlines named phase-one beamlines; these include Powder Diffraction beamline, Single-Crystal X-ray Diffraction for Small Molecules, Extended X-ray Absorption Fine Structure (EXAFS), Gas phase Photoemission, Solid-State Electron Spectroscopy, Spectromicroscopy and Macromolecular Crystallography.…”

Section: Iranian Light Source Facilitymentioning

confidence: 99%

Comparison of two vacuum system technologies for the synchrotron storage ring: case study of Iranian Light Source Facility

Karimi,

Ghiam,

Afhami

et al. 2024

J. Inst.

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The current study compares two vacuum system designs for the Iranian Light Source Facility (ILSF) storage ring: conventional vacuum system design with stainless-steel vacuum chambers that are pumped by Non-Evaporable Getter (NEG) cartridges and ion pumps. In this design, all synchrotron radiation is absorbed by the local photon absorbers. In the second design, the water-cooled copper tubes that are coated with NEG materials are used as the vacuum chambers. This study will illustrate the advantages of using the NEG-coated vacuum chambers over the conventional design with the stainless-steel chambers. Since the two designs for ILSF are now completed, some of the details of this comparison might be interesting to other light sources, especially those that have plans to upgrade to a 4th generation.

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Section: Iranian Light Source Facilitymentioning

confidence: 99%

Comparison of two vacuum system technologies for the synchrotron storage ring: case study of Iranian Light Source Facility

Karimi,

Ghiam,

Afhami

et al. 2024

J. Inst.

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“…Moreover, misalignment errors and its effect on dynamic aperture, and correction of the closed orbit distortion have been calculated by MICADO algorithm. Thus, our designed storage ring showed an optimized five-bend achromat lattice for intermediate light sources which can be considered as a preliminary lattice design for the Iranian Light Source Facility (ILSF) [26], whose latest design results consist of: an energy of 3 GeV, emittance of 275 pm-rad, circumference of 528 m, and current of 400 mA.…”

Section: Jinst 14 T02001mentioning

confidence: 99%

Design and optimization of a multi-bend achromat lattice for 3.5 GeV synchrotron storage ring

Moniri¹,

Taherparvar²

2019

J. Inst.

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In the past decades, the optimized design of light source array by use of multi-bend achromat has been considered to achieve high-quality photon beam for fundamental researches in different areas of science and technology. In this paper, we investigate a lattice design for a low emittance storage ring with intermediate energy of 3.5 GeV. We present the design results in detail for a five-bend achromat lattice with an emittance of 230 pm-rad, appropriate dynamic aperture, high brilliance photons near soft X-ray diffraction limited, the total lifetime of 11 hours and circumference of 448 m contains 20 straight sections of 6.1 meters in length. The results of closed orbit correction and misalignments errors on the dynamic aperture were also presented. The lattice provides sufficient dynamic aperture after closed orbit distortion correction. Furthermore, the variation of the emittance due to coupling and intra-beam scattering (IBS) effect has been calculated as a function of the energy and length of the bunch. Our designed storage ring shows an optimized five-bend achromat lattice for intermediate light sources.

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“…The Iranian Light Source Facility (ILSF) is a 3 GeV fourth-generation synchrotron radiation facility with a 528 m circumference. The storage ring lattice design is based on a compact multi-bent achromat (MBA) lattice with a nominal horizontal emittance of 270 pm • rad [1]. The vacuum chamber for the ILSF storage ring is planned to be manufactured using copper.…”

Section: Introductionmentioning

confidence: 99%

The resistive wall impedance and the effects of the non-evaporable getter thickness in an ultra-low emittance ring

et al. 2023

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In modern particle accelerators with ultra-low emittance, the vacuum chambers are designed based on Non-Evaporable Getter (NEG)-coated vacuum chambers. The thickness of the NEG coating plays a critical role in the dynamic beam effects. So, in this paper, the longitudinal and transverse impedance of a copper chamber coated with a NEG are investigated, and the effects of the NEG thickness over a wide range of frequencies have been studied. A good selection of NEG layer thickness could minimize the coating effects on the longitudinal and transverse beam impedance. The numerical results in this work show that the beam dynamic effects could be minimal with selecting a NEG coating thickness of about 1 μm.

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Designing an Ultra Low Emittance Lattices for Iranian Light Source Facility Storage Ring

Cited by 3 publications

References 0 publications

Comparison of two vacuum system technologies for the synchrotron storage ring: case study of Iranian Light Source Facility

Comparison of two vacuum system technologies for the synchrotron storage ring: case study of Iranian Light Source Facility

Design and optimization of a multi-bend achromat lattice for 3.5 GeV synchrotron storage ring

The resistive wall impedance and the effects of the non-evaporable getter thickness in an ultra-low emittance ring

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