Low power RF amplifier circuit for ion trap applications

Noriega, J. R.; García-Delgado, L. A.; Gómez-Fuentes, R.; García-Juárez, A.

doi:10.1063/1.4962707

Cited by 4 publications

(6 citation statements)

References 14 publications

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“…Use of this technique is expected to enhance the sensitivity of ion trap (IT) based MS, and the fidelity of quantum operations in IT quantum information processing (QIP). A low power RF amplifier circuit for ion trap applications is presented and tested in [488]. A different paper describes the design and operation of a multichannel, low-drift, low-noise d.c.…”

Section: Advantages Of Ion Trap Mass Spectrometrymentioning

confidence: 99%

The physics and applications of strongly coupled plasmas levitated in electrodynamic traps

Mihalcea¹,

Филинов²,

Syrovatka³

et al. 2019

Preprint

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Charged (nano)particles confined in electrodynamic traps can evolve into strongly correlated Coulomb systems, which are the subject of current investigation. Exciting physical phenomena associated to Coulomb systems have been reported such as autowave generation, phase transitions, system self-locking at the ends of the linear Paul trap, self-organization in layers, or pattern formation and scaling. The dynamics of ordered structures consisting of highly nonideal similarly charged nanoparticles, with coupling parameter of the order Γ = 10 8 is investigated. This approach enables us to study the interaction of nanoparticle structures in presence and in absence of the neutralizing plasma background, as well as to investigate various types of phenomena and physical forces these structures experience. Applications of electrodynamic levitation for mass spectrometry, including containment and study of single aerosols and nanoparticles are reviewed, with an emphasis on state of the art experiments and techniques, as well as future trends. Late experimental data suggest that inelastic scattering can be successfully applied to the detection of biological particles such as pollen, bacteria, aerosols, traces of explosives or synthetic polymers.

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Section: Advantages Of Ion Trap Mass Spectrometrymentioning

confidence: 99%

The physics and applications of strongly coupled plasmas levitated in electrodynamic traps

Mihalcea¹,

Филинов²,

Syrovatka³

et al. 2019

Preprint

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“…We note that the power consumption is nominally higher than other compact drive implementations in literature. However, the power consumption in these drives is kept low by realizing smaller gains 10 , by running at lower frequencies 11 , or by working at temperatures for which a cryostat is needed 16 .…”

Section: Characterization Of the Rf Drivementioning

confidence: 99%

“…However, this device usually has a relatively large size, which poses difficulties in the design of a compact experimental setup. As a result, increasing interest has been devoted to the miniaturization of RF drives into printed circuit boards (PCBs) 9 , for instance by using logic CMOS inverters 10 or low noise amplifiers 11 .…”

mentioning

confidence: 99%

“…The four resonant circuits are interconnected in order to ensure the existence of a common resonant mode with the same frequency and amplitude. This design, which differs from other RF drives recently realized on PCBs [9][10][11] , ensures that an independent DC field can be provided to each of the four RF outputs with a bias tee. This condition is particularly important in applications in which an excellent compensation of micromotion is needed 12 , e.g.…”

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confidence: 99%

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A compact radiofrequency drive based on interdependent resonant circuits for precise control of ion traps

Detti

Pas

Duca

et al. 2019

Review of Scientific Instruments

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Paul traps are widely used to confine electrically charged particles like atomic and molecular ions by using an intense radiofrequency (RF) field, typically obtained by a voltage drop on capacitative electrodes placed in vacuum. We present a RF drive realized on a compact printed circuit board (PCB) and providing a high-voltage RF signal to a quadrupole Paul trap. The circuit is formed by four interdependent resonant circuits -each of which connected to an electrode of a Paul trap -fed by low-noise amplifiers, leading to an output voltage of peak-to-peak amplitude up to 200 V at 3.23 MHz. The presence of a single resonant circuit for each electrode ensures a strong control on the voltage drop on each electrode, e.g. by applying a DC field through a bias tee. Additionally, the moderate quality factor Q = 67 of the resonant circuits ensures a fast operation of the drive, which can be turned on and off in less than 10 µs. Finally, the RF lines are equipped with pick-ups that sample the RF in phase and amplitude, thus providing a signal that can be used to actively control the voltage drop at the trap's electrodes. Thanks to its features, this drive is particularly suited for experiments in which high trap stability and excellent micromotion compensation are required.

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“…As reported in ref. 8 , the operating frequency of their indigenously developed RF amplifier got shifted by about 13.6% than it was designed for, which is due to the lack of prior knowledge on the load of their ion-trap. In all these above-mentioned cases, prior analysis and accurate estimation of the electrical loads will help in proper designing of the RF oscillator.…”

Section: Introductionmentioning

confidence: 99%

Estimation of the ion-trap assisted electrical loads and resulting BBR shift

Sharma

Roy

Panja

et al. 2018

Sci Rep

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Capacitive, inductive and resistive loads of an ion-trap system, which can be modelled as LCR circuits, are important to know for building a high accuracy experiment. Accurate estimation of these loads is necessary for delivering the desired radio frequency (RF) signal to an ion trap via an RF resonator. Of particular relevance to the trapped ion optical atomic clock, determination of these loads lead to accurate evaluation of the Black-Body Radiation (BBR) shift resulting from the inaccurate machining of the ion-trap itself. We have identified different sources of these loads and estimated their values using analytical and finite element analysis methods, which are found to be well in agreement with the experimentally measured values. For our trap geometry, we obtained values of the effective inductive, capacitive and resistive loads as: 3.1 μH, 3.71 (1) μH, 3.68 (6) μH; 50.4 pF, 51.4 (7) pF, 40.7 (2) pF; and 1.373 Ω, 1.273 (3) Ω, 1.183 (9) Ω by using analytical, numerical and experimental methods, respectively. The BBR shift induced by the excess capacitive load arising due to machining inaccuracy in the RF carrying parts has been accurately estimated, which results to a fractional frequency shift of 6.6 × 10−17 for an RF of 1 kV at 2π × 15 MHz and with ±10 μm machining inaccuracy. This needs to be incorporated into the total systematic uncertainty budget of a frequency standard as it is about one order of magnitude higher than the present precision of the trapped ion optical clocks.

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Low power RF amplifier circuit for ion trap applications

Cited by 4 publications

References 14 publications

The physics and applications of strongly coupled plasmas levitated in electrodynamic traps

The physics and applications of strongly coupled plasmas levitated in electrodynamic traps

A compact radiofrequency drive based on interdependent resonant circuits for precise control of ion traps

Estimation of the ion-trap assisted electrical loads and resulting BBR shift

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