Efficient water-cooled Bitter-type electromagnet for Zeeman slowing in cold-atom experiments
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arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866914427070054400 |
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| author | Koirala, Rishav Olsen, Ben A. |
| author_facet | Koirala, Rishav Olsen, Ben A. |
| contents | We describe the design, construction, and characterization of a Bitter-type electromagnet that produces a spatially-dependent magnetic field used for Zeeman slowing in cold-atom experiments. The coil consists of stacked copper arcs separated by PTFE spacers of varying thicknesses, generating a near-optimal field profile using a single power supply. With an electrical resistance of $26.5(3)$~m$Ω$ and self-inductance of $19.1(1)$~$μ$H, our design achieves a fast electrical switching time of $τ\approx 100$~$μ$s in a compact, 30-cm-long package. Water circulating helically through holes in the copper and channels in the spacers ensures efficient thermal management, limiting the temperature rise to $\sim 5^\circ$~C over $36$~s of continuous operation at $200$~A. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_21064 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Efficient water-cooled Bitter-type electromagnet for Zeeman slowing in cold-atom experiments Koirala, Rishav Olsen, Ben A. Atomic Physics Instrumentation and Detectors We describe the design, construction, and characterization of a Bitter-type electromagnet that produces a spatially-dependent magnetic field used for Zeeman slowing in cold-atom experiments. The coil consists of stacked copper arcs separated by PTFE spacers of varying thicknesses, generating a near-optimal field profile using a single power supply. With an electrical resistance of $26.5(3)$~m$Ω$ and self-inductance of $19.1(1)$~$μ$H, our design achieves a fast electrical switching time of $τ\approx 100$~$μ$s in a compact, 30-cm-long package. Water circulating helically through holes in the copper and channels in the spacers ensures efficient thermal management, limiting the temperature rise to $\sim 5^\circ$~C over $36$~s of continuous operation at $200$~A. |
| title | Efficient water-cooled Bitter-type electromagnet for Zeeman slowing in cold-atom experiments |
| topic | Atomic Physics Instrumentation and Detectors |
| url | https://arxiv.org/abs/2510.21064 |