Ion effects in a compact electron storage ring

Tazaki, Hiroshi; Tsutsui, Yasumitsu; Tomimasu, T.

doi:10.1016/0168-9002(90)91854-5

Cited by 4 publications

(1 citation statement)

References 9 publications

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“…In most cases a DC voltage of 2 or 3 kV is enough to extract the ions from the beam potential well. Usually storage rings and pulsed linacs use clearing gaps [6] whereas Energy Recovery Linacs (ERLs) and small rings use clearing electrodes [10,11].…”

Section: Introductionmentioning

confidence: 99%

Longitudinal and transverse dynamics of ions from residual gas in an electron accelerator

Gamelin

Bruni

Radevych

2018

Phys. Rev. Accel. Beams

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The ion cloud produced from residual gas in an electron accelerator can degrade machine performances and produce instabilities. The ion dynamics in an accelerator is governed by the beam-ion interaction, magnetic fields and eventual mitigation strategies. Due to the fact that the beam has a nonuniform transverse size along its orbit, the ions move longitudinally and accumulate naturally at some points in the accelerator. In order to design effective mitigation strategies it is necessary to understand the ion dynamics not only in the transverse plane but also in the longitudinal direction. After introducing the physics behind the beam-ion interaction, we show how to get accumulation points for a realistic electron storage ring lattice. Simulations of the ion cloud dynamics, including the effect of magnetic fields on the ions, clearing electrodes and clearing gaps are shown. Longitudinal ion trapping due to the magnetic mirror effect in the dipole fringe fields is also detailed. Finally, the effectiveness of clearing electrode using longitudinal clearing fields is discussed and compared to clearing electrodes producing transverse field only.

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Section: Introductionmentioning

confidence: 99%

Longitudinal and transverse dynamics of ions from residual gas in an electron accelerator

Gamelin

Bruni

Radevych

2018

Phys. Rev. Accel. Beams

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Stored beam lifetime evaluation formulae for electron storage rings

Makulkin¹

Proceedings of International Conference on Particle Accelerators

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NIJI-III Compact Superconducting Electron Storage Ring

Tazaki¹,

Tsutsui²,

Emura³

et al. 1991

Jpn. J. Appl. Phys.

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The NIJI-III is a compact superconducting electron storage ring for industrial applications. Features of the ring include four strongly curved large-bore superconducting bending magnets utilizing quadrupole coils with a circular cross section surrounded by an air core and a cold bore. The circumference of the ring is 15.54 m with a critical wavelength of 13 Å. Development of the NIJI-III is near completion. This report examines the design and performance of the NIJI-III.

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Ion effects in a compact electron storage ring

Cited by 4 publications

References 9 publications

Longitudinal and transverse dynamics of ions from residual gas in an electron accelerator

Longitudinal and transverse dynamics of ions from residual gas in an electron accelerator

Stored beam lifetime evaluation formulae for electron storage rings

NIJI-III Compact Superconducting Electron Storage Ring

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