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Optimization of endcap trap for single-ion manipulation

Potential distribution is an important characteristic for evaluating the performance of an ion trap. Here, we analyze and optimize the potential distribution of an endcap ion trap for single-ion trapping. We obtain an optimal endcap radius of 225 μm–250 μm, endcap-shield gap of ∼ 250 μm, and inter-endcap distance of 540 μm–590 μm. The simulation method for analysis can also be applied to other ion traps, which is useful for improving the design and assembly of ion traps.