Numerical investigations on resistive cooling of trapped highly charged ions

Maero, G.; Herfurth, F.; Kluge, H. J.; Schwarz, S.; Zwicknagel, G.

doi:10.1007/s00340-011-4808-5

Cited by 14 publications

(12 citation statements)

References 38 publications

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“…Adding a damping term to (2) yields a new differential equation that can now model effects such as laser cooling or coupling of the particles' mechanical motions to a cold resonant circuit [32,33],ẍ…”

Section: Equation Of Damped Motionmentioning

confidence: 99%

Investigation of two-frequency Paul traps for antihydrogen production

et al. 2016

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Radio-frequency (rf) Paul traps operated with multifrequency rf trapping potentials provide the ability to independently confine charged particle species with widely different charge-to-mass ratios. In particular, these traps may find use in the field of antihydrogen recombination, allowing antiproton and positron clouds to be trapped and confined in the same volume without the use of large superconducting magnets. We explore the stability regions of two-frequency Paul traps and perform numerical simulations of small samples of multispecies charged-particle mixtures of up to twelve particles that indicate the promise of these traps for antihydrogen recombination.

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Section: Equation Of Damped Motionmentioning

confidence: 99%

Investigation of two-frequency Paul traps for antihydrogen production

et al. 2016

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“…This applies especially for the simulation of cooling methods like the resistive cooling, where the cooling force has a complex structure. In [1] a simulation method for the resisitive cooling was presented, using a particle in cell code. The ion-ion interaction was approximated with a mean-¿eld approach.…”

Section: Introductionmentioning

confidence: 99%

MD simulations of resistive cooling in HITRAP using GPUs

Steinmann

Gross

Herfurth

et al. 2013

AIP Conference Proceedings

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A large-acceptance beam-deceleration module for retrofitting into ion-source beam lines Rev. Sci. Instrum. 84, 033305 (2013) Key elements of space charge compensation on a low energy high intensity beam injector Rev. Sci. Instrum. 84, 033304 (2013) Performance of an inverted ion source Rev. Sci. Instrum. 84, 023506 (2013) Physics of a magnetic filter for negative ion sources. II. E×B drift through the filter in a real geometry Phys. Plasmas 19, 113510 (2012) Improved charge breeding efficiency of light ions with an electron cyclotron resonance ion source Rev. Sci. Instrum. 83, 113303 (2012) Additional information on AIP Conf. Proc. Abstract. In the HITRAP facility at GSI it is planned to store 10 5 highly charged ions up to U 92+ in a cryogenic Penning trap and cool them down to 4 K via electron and resistive cooling. During the cooling process the ion density increases and the characteristics of the ion cloud are increasingly determined by Coulomb interactions. We present a parallel algorithm for the simulation of the resistive cooling for ion clouds in cylindrical Penning traps. For the simulation of the resistive cooling we run an OpenCl code on a single GPU device.

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“…The integration method is in this case a standard fourth-order Runge-Kutta scheme. On the other hand, the kinetic treatment for dust grains and ions is accomplished implementing a B-field modified Velocity Verlet algorithm [22,23].…”

Section: Numerical Investigationsmentioning

confidence: 99%

Effects of dust contamination on the transverse dynamics of a magnetized electron plasma

Romé¹,

Cavaliere²,

Cavenago³

et al. 2015

AIP Conference Proceedings

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Abstract. Complex (dusty) plasmas are characterized by the presence of a fraction of micrometric or sub-micrometric particles which may collect a surface charge up to the order of a few thousand electron charges. The dusty plasmas studied in the experiments generally satisfy a global neutrality condition. By contrast, we present here the investigation of a magnetized nonneutral plasma, i.e., a plasma with a single sign of charge (e.g. electrons) confined in a Penning-Malmberg trap, contaminated by a dust population. We simulate the two-dimensional transverse dynamics of this multi-component plasma with a particle-in-cell code implementing a mass-less fluid (drift-Poisson) approximation for the electrons and a kinetic description for the dust component (including gravity). Simulations with different initial dust distributions and densities have been performed in order to investigate the influence of the dust on the development of the diocotron instability in the electron plasma. In particular, the early stage of the growth of the diocotron modes has been analyzed by Fourier decomposition.

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Numerical investigations on resistive cooling of trapped highly charged ions

Cited by 14 publications

References 38 publications

Investigation of two-frequency Paul traps for antihydrogen production

Investigation of two-frequency Paul traps for antihydrogen production

MD simulations of resistive cooling in HITRAP using GPUs

Effects of dust contamination on the transverse dynamics of a magnetized electron plasma

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