Radio-frequency quadrupole trap as a tool for experimental beam physics

Okamoto, Hiromi; Wada, Yoshio; Takai, Ryota

doi:10.1016/s0168-9002(01)02139-8

Cited by 41 publications

(29 citation statements)

References 12 publications

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“…It turns out that the transverse collective motion of a non-neutral plasma in a compact trap system is approximately equivalent to the beamframe transverse motion of a charged-particle beam in an accelerator. Following this idea, we have constructed at Hiroshima University four tabletop systems dedicated to experimental beamdynamics research [10][11][12]. Three of them are the linear Paul traps that employ a radio-frequency (rf) electric field to confine a large number of heavy ions [13].…”

Section: Introductionmentioning

confidence: 99%

Experimental simulation of beam propagation over long path lengths using radio-frequency and magnetic traps

Okamoto

Endo

Fukushima

et al. 2014

Nuclear Instruments and Methods in Physics Research Section A:

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Section: Introductionmentioning

confidence: 99%

Experimental simulation of beam propagation over long path lengths using radio-frequency and magnetic traps

Okamoto

Endo

Fukushima

et al. 2014

Nuclear Instruments and Methods in Physics Research Section A:

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“…Using an electric rf quadrupole which focuses and defocuses a bunch of ions in time, the transverse dynamics of this system are equivalent to the strong focusing systems in quadrupole focusing channels of accelerators. The equivalence between this system and that of a linear focusing channel has previously been well established [1,2,3,4]. This method of rf electric focusing produces equations of motion which take the form of Matthieu equations, analogous to those in a strong focusing accelerator channel.…”

Section: Introductionmentioning

confidence: 94%

Commissioning and first results of the Intense Beam EXperiment (IBEX) linear Paul trap

Sheehy¹,

Carr²,

Martin³

et al. 2017

J. Phys.: Conf. Ser.

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A tandem linear Paul trap as an ion source K Izawa, H Higaki, H Yamate et al. Abstract. The Intense Beam Experiment (IBEX) is a linear Paul trap designed to replicate the dynamics of intense particle beams in accelerators. Similar to the S-POD apparatus at Hiroshima University, IBEX is a small scale experiment which has been constructed and recently commissioned at the STFC Rutherford Appleton Laboratory in the UK. The aim of the experiment is to support theoretical studies of next-generation high intensity proton and ion accelerators, complementing existing computer simulation approaches. Here we report on the status of commissioning and first results obtained.

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“…The purpose of this paper is to show a possible design of a multipole ion trap optimized for a wider range of beam dynamics studies than the regular Paul trap [15]. The proposed modified Paul trap has extra electrodes that enable us to control the strengths and time structures of low-order nonlinear fields separately from the linear focusing potential.…”

Section: Author's E-mail: Okamoto@scihiroshima-uacjpmentioning

confidence: 99%

Design Study of a Multipole Ion Trap for Beam Physics Applications

Fukushima

Okamoto

2015

Plasma and Fusion Research

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A unique linear Paul trap is designed for a systematic experimental study of nonlinear beam dynamics with the tabletop apparatus "S-POD" at Hiroshima University. S-POD is the abbreviation of "Simulator of Particle Orbit Dynamics" where we can produce a non-neutral plasma physically equivalent to a charged-particle beam in an alternating-gradient focusing channel. Unlike a regular Paul trap with four quadrupole rods, the present trap configuration includes extra electrodes that enable us to control the strengths and time structures of low-order nonlinear fields independently of the linear focusing potential. We here consider the insertion of thin metallic plates in between the quadrupole rods. The size and arrangement of those extra electrodes are optimized by using a Poisson solver. Simple scaling laws are derived to make a quick estimate of the sextupole and octupole field strengths as a function of the plate dimension. Particle tracking simulations are performed to demonstrate the controlled excitation of nonlinear resonances in the modified Paul trap.

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Radio-frequency quadrupole trap as a tool for experimental beam physics

Cited by 41 publications

References 12 publications

Experimental simulation of beam propagation over long path lengths using radio-frequency and magnetic traps

Experimental simulation of beam propagation over long path lengths using radio-frequency and magnetic traps

Commissioning and first results of the Intense Beam EXperiment (IBEX) linear Paul trap

Design Study of a Multipole Ion Trap for Beam Physics Applications

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