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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2605.16833 |
| Etiquetas: |
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| _version_ | 1866914571973820416 |
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| author | Ma, Yuhan Ma, Kang Zhao, Wei Peng, Lisha Huang, Songling Li, Shisong |
| author_facet | Ma, Yuhan Ma, Kang Zhao, Wei Peng, Lisha Huang, Songling Li, Shisong |
| contents | This paper presents an ultra-stable current source tailored for the one-mode, two-phase (OMTP) measurement scheme in Tsinghua tabletop Kibble balances. To achieve simultaneous high resolution and nA/A-level stability, a composite 'coarse-fine' control topology is proposed, utilizing a dual-DAC architecture and an active digital feedback loop. Experimental results show that the Allan deviation reaches 1 nA/A at an integration time of approximately 3 minutes, representing a tenfold improvement in measurement speed compared to commercial-source-based setups. Furthermore, the design offers a significant cost advantage, providing a satisfying option for high-precision, cost-effective mass realization. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_16833 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Design and Verification of a New Current Source for Tsinghua Tabletop Kibble Balance Ma, Yuhan Ma, Kang Zhao, Wei Peng, Lisha Huang, Songling Li, Shisong Instrumentation and Detectors This paper presents an ultra-stable current source tailored for the one-mode, two-phase (OMTP) measurement scheme in Tsinghua tabletop Kibble balances. To achieve simultaneous high resolution and nA/A-level stability, a composite 'coarse-fine' control topology is proposed, utilizing a dual-DAC architecture and an active digital feedback loop. Experimental results show that the Allan deviation reaches 1 nA/A at an integration time of approximately 3 minutes, representing a tenfold improvement in measurement speed compared to commercial-source-based setups. Furthermore, the design offers a significant cost advantage, providing a satisfying option for high-precision, cost-effective mass realization. |
| title | Design and Verification of a New Current Source for Tsinghua Tabletop Kibble Balance |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2605.16833 |