Double-double bend achromat cell upgrade at the Diamond Light Source: From design to commissioning

Bartolini, R.; Abraham, C.; Apollonio, M.; Bailey, Christopher; Cox, Matthew; Day, Alan; Fielder, Richard; Hammond, Nigel; Heron, M. T.; Holdsworth, Roger; Kaÿ, J.; Martin, Ian; Mhaskar, S.P.; Miller, August; Pulampong, Thapakron; Rehm, Guenther; Rial, Ed; Rose, Austen; Shahveh, Abolfazl; Singh, B.; Thomson, Andrew; Walker, R.P.

doi:10.1103/physrevaccelbeams.21.050701

Cited by 10 publications

(7 citation statements)

References 6 publications

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“…The EBS is a new kind of 6 GeV fourth generation light source, and as demonstrated above its delivery represents a very important step forward, also in consideration that many facilities around the world 12 , 14 , 35 , 36 , 90 , 91 plan similar upgrades with similarly tight schedules.…”

Section: Ebs Storage Ring Commissioning and Early Operation Resultsmentioning

confidence: 99%

The Extremely Brilliant Source storage ring of the European Synchrotron Radiation Facility

et al. 2023

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The Extremely Brilliant Source (EBS) is the experimental implementation of the novel Hybrid Multi Bend Achromat (HMBA) storage ring magnetic lattice concept, which has been realised at European Synchrotron Radiation Facility. We present its successful commissioning and first operation. We highlight the strengths of the HMBA design and compare them to the previous designs, on which most operational synchrotron X-ray sources are based. We report on the EBS storage ring’s significantly improved horizontal electron beam emittance and other key beam parameters. EBS extends the reach of synchrotron X-ray science confirming the HMBA concept for future facility upgrades and new constructions.

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Section: Ebs Storage Ring Commissioning and Early Operation Resultsmentioning

confidence: 99%

The Extremely Brilliant Source storage ring of the European Synchrotron Radiation Facility

et al. 2023

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“…This section of the ring is of a relatively complex structure, consisting of a mix of copper and stainless steel narrow-gap sections (13.5 mm × 9 mm internal half-aperture), with a number of discrete inner wedges that are used to absorb synchrotron radiation at high loss points [11]. By using a simplified impedance model to reproduce the measurements, it has been possible to quantify the increase in inductance, resistive wall impedance, and effective BBR shunt impedance that this has had.…”

Section: Discussionmentioning

confidence: 99%

“…The new cell is described in detail in [11], where a discussion on the significant design choices can also be found. For convenience, the storage ring parameters before and after installation are provided in Table I, and a plot of the Twiss and dispersion functions are shown in Fig.…”

Section: The Ddba Cellmentioning

confidence: 99%

“…Within the DDBA cell there are two long and two short dipoles, each of which contain a defocusing quadrupole component of k ¼ −1.43 m 2 . This can be altered by changing the magnet excitation, however, doing so will also change the integrated bending angle, and so can only be carried out in combination with a physical shift of the magnet to compensate [11].…”

Section: Machine Characterization a Linear Opticsmentioning

confidence: 99%

“…Since then, an additional twenty-two IDs have been installed [8], and two long straight sections have been modified to provide double minibeta with horizontal focusing optics [9]. The most significant change however occurred in October 2016 with the replacement of one of the DBA cells with a double-DBA (DDBA) cell [10,11]. The initial concept for the DDBA cell was developed as a potential lattice upgrade for the entire Diamond storage ring [12], however, the primary purpose of the single-cell replacement was to create space in the centre of the arc for an additional in-vacuum ID.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of the double-double bend achromat lattice modification to the Diamond Light Source storage ring

Martin¹,

Apollonio²,

Fielder³

et al. 2018

Phys. Rev. Accel. Beams

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The Diamond storage ring has recently been modified by replacing one of the original double bend achromat (DBA) cells with a double-DBA (DDBA) cell. The new cell marks a fundamental break to the machine symmetry, and the final engineered solution shares many design features in common with modern multi-bend achromat cells. In this paper we review the impact that the modification has had on the linear and nonlinear optics, collective effects, and overall performance. Where appropriate, comparison to model predictions are also made.

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Double bend achromat structure for insertion devices

Fakhri¹,

Kant²

2023

Nuclear Instruments and Methods in Physics Research Section A:

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Double-double bend achromat cell upgrade at the Diamond Light Source: From design to commissioning

Cited by 10 publications

References 6 publications

The Extremely Brilliant Source storage ring of the European Synchrotron Radiation Facility

The Extremely Brilliant Source storage ring of the European Synchrotron Radiation Facility

Characterization of the double-double bend achromat lattice modification to the Diamond Light Source storage ring

Double bend achromat structure for insertion devices

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