Very low emittance light source storage ring

Tsumaki, K.; Kumagai, N.

doi:10.1016/j.nima.2006.06.030

Cited by 17 publications

(14 citation statements)

References 9 publications

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“…In 2006, Tsumaki and Kumagai [25] described a 6-GeV, 10BA, 2-km ring with an emittance of 21 pm in both planes at 100 mA. They exhibited adequate DA for beam accumulation and sufficient momentum aperture for a several-hour Touschek lifetime.…”

Section: Next-generation Ring Designsmentioning

confidence: 99%

Progress Toward an Ultimate Storage Ring Light Source

Borland

2013

J. Phys.: Conf. Ser.

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Section: Next-generation Ring Designsmentioning

confidence: 99%

Progress Toward an Ultimate Storage Ring Light Source

Borland

2013

J. Phys.: Conf. Ser.

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“…These nonlinear elements will significantly reduce the dynamic apertures, present a great challenge for MBA lattice design [5,6,7]. Many of the MBA lattices which have been designed to date only provide horizontal dynamic apertures of around 2 mm [8,9,10], leading to severe difficulties for injection [11,12].…”

Section: Introductionmentioning

confidence: 99%

Using a double-frequency RF system to facilitate on-axis beam accumulation in a storage ring

Jiang

Zhao

Tian

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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An on-axis injection scheme using a double-frequency RF system in a storage ring with small dynamic aperture is proposed. By altering RF voltages, empty RF buckets can be created which will be used for on-axis injection. After bunches are injected, a reverse RF voltage altering process is performed and the injected bunches can be longitudinally dumped to the main RF buckets. The scheme allows reaping the advantages of the on-axis injection while still performing accumulation.

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“…It is a tremendous challenge to design a storage ring having such an extremely low emittance, a factor of 100 smaller than those in existing midenergy light sources, especially such that it has adequate dynamic aperture and beam lifetime. In many ultralow emittance designs [4][5][6][7][8], the injection acceptances are not large enough for accumulation of the electron beam, necessitating on-axis injection where stored electron bunches are completely replaced with newly injected ones. Recently, starting with the MAX-IV 7-bend achromatic cell [9], we have made significant progress [10,11] with the design of positron-electron-project (PEP)-X, a USR that would inhabit the decommissioned PEP-II tunnel at SLAC (Fig.…”

Section: Introductionmentioning

confidence: 99%

Ultimate storage ring based on fourth-order geometric achromats

Cai

Bane

Hettel

et al. 2012

Phys. Rev. ST Accel. Beams

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We have designed an ''ultimate'' storage ring for a future light source that would be resided in the positron-electron-project (PEP) tunnel and achieves the diffraction-limited emittances (at 1.5 Å ) of 12 pm-rad in both horizontal and vertical planes with a 4.5-GeV electron beam. These emittances include the contribution of intrabeam scattering at a nominal current of 200 mA in 3300 bunches. This quality beam in conjunction with a conventional 4-m undulator in a straight section can generate synchrotron radiation having a spectral brightness above 10 22 ½photons=s=mm 2 =mrad 2 =0:1%BW at a 10 keV photon energy. The high coherence at the diffraction limit makes this design competitive with 4th generation light sources based on an energy recovery linac. In addition, the beam lifetime is several hours and the dynamic aperture is large enough to allow off-axis injection. The alignment and stability tolerances, though challenging, are achievable. A ring with all these properties is only possible because of several major advances in mitigating the effects of nonlinear resonances.

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Very low emittance light source storage ring

Cited by 17 publications

References 9 publications

Progress Toward an Ultimate Storage Ring Light Source

Progress Toward an Ultimate Storage Ring Light Source

Using a double-frequency RF system to facilitate on-axis beam accumulation in a storage ring

Ultimate storage ring based on fourth-order geometric achromats

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