Injection with a single dipole kicker into the MAX IV storage rings

Leemann, Simon

doi:10.1016/j.nima.2012.07.023

Cited by 12 publications

(14 citation statements)

References 6 publications

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“…However, from its inception, this injection was considered too demanding for the first stages of commissioning. Therefore, an injection based on a single dipole kicker was designed [14] and implemented in the MAX IV 3 GeV storage ring. The main idea is to rely on an individual dipole kicker in order to inject both on-and off-axis, as well as to enable accumulation in the storage ring without, however, having to require tight orbit and optics control as in the case of a nonlinear kicker injection scheme.…”

Section: Injection With a Single Dipole Kickermentioning

confidence: 99%

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First optics and beam dynamics studies on the MAX IV 3 GeV storage ring

Leemann

Sjöström

Andersson

2018

Nuclear Instruments and Methods in Physics Research Section A:

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The MAX IV 3 GeV storage ring is the first light source to make use of a multibend achromat lattice to reach ultralow emittance. After extensive commissioning efforts, the storage ring is now ramping up its user program. We present results from beam commissioning of the MAX IV 3 GeV storage ring as well as a summary of the beam dynamics studies that have so for been carried out. We report on injection and accumulation using a single dipole kicker, top-up injection, slow orbit feedback, restoring the linear optics to design, effects of in-vacuum undulators with closed gaps, adjusting nonlinear optics to achieve design chromaticity correction and dynamic aperture sufficient for high injection efficiency and large Touschek lifetime.

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Section: Injection With a Single Dipole Kickermentioning

confidence: 99%

“…Details for this injection scheme have been published in [14] and shall not be repeated here. Instead, Fig.…”

Section: Injection With a Single Dipole Kickermentioning

confidence: 99%

First optics and beam dynamics studies on the MAX IV 3 GeV storage ring

Leemann

Sjöström

Andersson

2018

Nuclear Instruments and Methods in Physics Research Section A:

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“…Injection with a single dipole kicker presented a solution (Leemann, 2012a). Although a dipole kicker does not allow for transparent top-up injection, it offers an injection with little dependence on initial parameters and optics.…”

Section: Injection With a Single Dipole Kickermentioning

confidence: 99%

“…Top: off-axis injection with a single dipole kicker (KI) in the MAX IV 3 GeV storage ring starting at the septum (Leemann, 2012a). Bottom: phase space plot showing tracking of injection and capture (first five turns are indicated) of 1000 particles at the septum.…”

Section: Figure 13mentioning

confidence: 99%

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The MAX IV storage ring project

et al. 2014

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The MAX IV facility, currently under construction in Lund, Sweden, features two electron storage rings operated at 3 GeV and 1.5 GeV and optimized for the hard X-ray and soft X-ray/VUV spectral ranges, respectively. A 3 GeV linear accelerator serves as a full-energy injector into both rings as well as a driver for a short-pulse facility, in which undulators produce X-ray pulses as short as 100 fs. The 3 GeV ring employs a multibend achromat (MBA) lattice to achieve, in a relatively short circumference of 528 m, a bare lattice emittance of 0.33 nm rad, which reduces to 0.2 nm rad as insertion devices are added. The engineering implementation of the MBA lattice raises several technological problems. The large number of strong magnets per achromat calls for a compact design featuring small-gap combined-function magnets grouped into cells and sharing a common iron yoke. The small apertures lead to a low-conductance vacuum chamber design that relies on the chamber itself as a distributed copper absorber for the heat deposited by synchrotron radiation, while non-evaporable getter (NEG) coating provides for reduced photodesorption yields and distributed pumping. Finally, a low main frequency (100 MHz) is chosen for the RF system yielding long bunches, which are further elongated by passively operated thirdharmonic Landau cavities, thus alleviating collective effects, both coherent (e.g. resistive wall instabilities) and incoherent (intrabeam scattering). In this paper, we focus on the MAX IV 3 GeV ring and present the lattice design as well as the engineering solutions to the challenges inherent to such a design. As the first realisation of a light source based on the MBA concept, the MAX IV 3 GeV ring offers an opportunity for validation of concepts that are likely to be essential ingredients of future diffraction-limited light sources.

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