Performance of radio frequency source based on electronic tube oscillation circuit for ion traps

XU Huaxuan; AO Zhiyuan; LI Lin; LI Zi; HE Shengguo; TONG Xin

doi:10.3969/j.issn.1007-5461.2025.02.008

Chinese Journal of Quantum Electronics, Volume. 42, Issue 2, 229(2025)

Performance of radio frequency source based on electronic tube oscillation circuit for ion traps

XU Huaxuan^1、#, AO Zhiyuan^2,3、#, LI Lin^2,3, LI Zi^2,3、*, HE Shengguo^2、**, and TONG Xin²

Author Affiliations

¹School of Physics and Technology, Wuhan University, Wuhan 430072, China

²State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China

³University of Chinese Academy of Sciences, Beijing 100049, China

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Figures & Tables(8)

Fig. 1. Circuit diagram of the RF source. (a) LC resonance circuit; (b)(c) Feedback networks; (d) Amplitude adjustment module

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Fig. 2. Photograph of the RF source

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Fig. 3. Schematic of the segmented linear ion trap. (a) Radial cross-sectional dimensions; (b) Axial dimensions

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Fig. 4. Performance of the RF source. (a) Output peak to peak voltage V_pp of the two RF electric fields and the corresponding harmonic distortion at different working frequencies of the RF source device; (b) Relationship between V_pp andDC input voltage at 2.2, 3.6, 4.0 MHz

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Fig. 5. Allan derivations of the parameters. (a) Frequency; (b) Phase difference; (c) V_pp. The dashed line in each subfigure represents a reference line with a slope of -0.5

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Fig. 6. Fluorescence images of calcium ion Coulomb crystals under different output RF voltages from RF source. (a)-(e) correspond the conditions with RF frequency of 2 MHz and V_pp of 70, 100, 130, 160, 190 V, respectively; (f)-(j) correspond the conditions with RF frequency of 3 MHz and V_pp of 120, 150, 180, 210, 240 V, respectively

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Table 1. Parameters of electronic components of the RF source

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Table 1. Parameters of electronic components of the RF source

Label	Type	Parameters
Dual-beam tetrode	FU-19	Anode voltage<750 V, filament voltage is 12.6 V
R₁, R₂, R₃, R₄, R₈, R₉	Metal firm resistance	10 MΩ at 1000 V
R₅, R₆, R₁₀, R₁₁	Metal firm resistance	150 kΩ at 1000 V
R₇	Metal firm resistance	15 kΩ at 1000 V
C₁, C₂, C₄, C₉, C₁₀	Ceramic capacitor	10 nF at 3000 V
C₃	Adjustable air capacitor	About 100-800 pF at 2000 V
C₅, C₆, C₇, C₁₁, C₁₂, C₁₃	Ceramic capacitor	68 pF at 3000 V
C₈, C₁₄	Ceramic capacitor	33 pF at 3000 V
L₁, L₂	Self-fabricated	9.75 μH
L₃	I-shaped inductance	100 μH

Table 2. The voltage outputs (V_pp) of both channels at different resonance frequencies of the RF source
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Table 2. The voltage outputs (V_pp) of both channels at different resonance frequencies of the RF source
Frequency / MHz RF₁ output voltage / V RF₂ output voltage / V Difference between RF₁ and RF₂ / %
2.2 596.9 ± 1.4 590.3 ± 1.3 1.11
3.6 614.2 ± 1.5 605.5 ± 1.7 1.43
4.0 594.6 ± 1.9 581.0 ± 1.6 2.31

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Huaxuan XU, Zhiyuan AO, Lin LI, Zi LI, Shengguo HE, Xin TONG. Performance of radio frequency source based on electronic tube oscillation circuit for ion traps[J]. Chinese Journal of Quantum Electronics, 2025, 42(2): 229

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Paper Information

Category:

Received: Aug. 3, 2023

Accepted: --

Published Online: Apr. 1, 2025

The Author Email: Zi LI (lizi@wipm.ac.cn), Shengguo HE (hesg@wipm.ac.cn)

DOI:10.3969/j.issn.1007-5461.2025.02.008

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Parameters of electronic components of the RF source

Table 1. Parameters of electronic components of the RF source

Table 2. The voltage outputs (Vpp) of both channels at different resonance frequencies of the RF source

Table 2. The voltage outputs (Vpp) of both channels at different resonance frequencies of the RF source

Table 2. The voltage outputs (V_pp) of both channels at different resonance frequencies of the RF source

Table 2. The voltage outputs (V_pp) of both channels at different resonance frequencies of the RF source