Paul Trap Simulator Experiment to Model Intense-Beam Propagation in Alternating-Gradient Transport Systems

Gilson, Erik; Davidson, Ronald C.; Efthimion, P. C.; Majeski, R.

doi:10.1103/physrevlett.92.155002

Cited by 53 publications

(12 citation statements)

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“…(3) and (4). We note that the Paul Trap Simulator Experiment (PTSX) device 20 at the Princeton Plasma Physics Laboratory (PPPL) could be easily converted into a dedicated experimental facility for studying coupled transverse dynamics in rotating quadrupole channels by subdividing its four electrodes into eight. …”

Section: B Rotating Quadrupole Electric Fieldmentioning

confidence: 99%

Analysis of continuously rotating quadrupole focusing channels using generalized Courant-Snyder theory

et al. 2013

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Section: B Rotating Quadrupole Electric Fieldmentioning

confidence: 99%

Analysis of continuously rotating quadrupole focusing channels using generalized Courant-Snyder theory

et al. 2013

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“…A large number of Cs + ions were confined in a 2 m long linear Paul trap to study basic properties of a space charge dominated charged particle system [4]. Also, a linear Paul trap which can confine a large number of ions has been constructed for a simplified experimental beam physics and preliminary experimental results have been reported [5].…”

Section: Introductionmentioning

confidence: 99%

Axial resonances of Ar + ions observed in a linear Paul trap

et al. 2007

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Non-neutral plasmas composed of 10 6 to 10 7 Ar + ions were confined in a linear Paul trap which had a non-harmonic electrostatic potential in axial direction. Axial resonances were observed by applying additional RF electric field and detecting axially ejected ions. It was found that the resonance frequencies shifted as a function of the ion number, the amplitude of additional RF electric field, and the applied electrostatic potential for the axial confinement.

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“…The transverse dynamics of particles in the two systems are equivalent. 6,[9][10][11][12][13][19][20][21] The Paul Trap Simulator Experiment (PTSX) device 9 is a linear Paul trap and consists of three co-linear cylinders, as shown in Figure 1, with radius r w ¼ 0:1 m, each divided into four 90 azimuthal sectors, in a vacuum of 1 Â 10 À10 Torr. The pure cesium-ion collisionless plasma is confined radially in the central 2 m long cylinder by oscillating voltages (typically or dump the ions, the voltage on one or the other set of outer electrodes is switched to the same oscillating voltage that is applied to the central cylinder.…”

Section: Introductionmentioning

confidence: 99%

“…In order to study the dynamics of particle beams in large accelerator systems, many experimental studies have been carried out in compact, laboratory-scale, and experiments. 5,6,[9][10][11][12][13][14][15][16][17] A linear Paul trap 18 is suitable for studying the transverse dynamics of such a system because the self-fields and spatially periodic force that a slice of a long charge bunch in the transport system experiences are the Lorentz transforms of the self-field and time oscillating electrostatic force that a long trapped charge column experiences in a linear Paul trap. The transverse dynamics of particles in the two systems are equivalent.…”

Section: Introductionmentioning

confidence: 99%

Excitation of transverse dipole and quadrupole modes in a pure ion plasma in a linear Paul trap to study collective processes in intense beams

Gilson¹,

Davidson²,

Efthimion³

et al. 2013

Physics of Plasmas

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Transverse dipole and quadrupole modes have been excited in a one-component cesium ion plasma trapped in the Paul Trap Simulator Experiment (PTSX) in order to characterize their properties and understand the effect of their excitation on equivalent long-distance beam propagation. The PTSX device is a compact laboratory Paul trap that simulates the transverse dynamics of a long, intense charge bunch propagating through an alternating-gradient transport system by putting the physicist in the beam's frame of reference. A pair of arbitrary function generators was used to apply trapping voltage waveform perturbations with a range of frequencies and, by changing which electrodes were driven with the perturbation, with either a dipole or quadrupole spatial structure. The results presented in this paper explore the dependence of the perturbation voltage's effect on the perturbation duration and amplitude. Perturbations were also applied that simulate the effect of random lattice errors that exist in an accelerator with quadrupole magnets that are misaligned or have variance in their field strength. The experimental results quantify the growth in the equivalent transverse beam emittance that occurs due to the applied noise and demonstrate that the random lattice errors interact with the trapped plasma through the plasma's internal collective modes. Coherent periodic perturbations were applied to simulate the effects of magnet errors in circular machines such as storage rings. The trapped one component plasma is strongly affected when the perturbation frequency is commensurate with a plasma mode frequency. The experimental results, which help to understand the physics of quiescent intense beam propagation over large distances, are compared with analytic models. V C 2013 AIP Publishing LLC.

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Paul Trap Simulator Experiment to Model Intense-Beam Propagation in Alternating-Gradient Transport Systems

Cited by 53 publications

References 10 publications

Analysis of continuously rotating quadrupole focusing channels using generalized Courant-Snyder theory

Analysis of continuously rotating quadrupole focusing channels using generalized Courant-Snyder theory

Axial resonances of Ar + ions observed in a linear Paul trap

Excitation of transverse dipole and quadrupole modes in a pure ion plasma in a linear Paul trap to study collective processes in intense beams

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