A study of multicavity concept applied to hexagonal coaxial haloscopes
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arXiv
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866914547986595840 |
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| author | García-Barceló, J. M. Navarro-Madrid, Jose R. Díaz-Morcillo, Alejandro |
| author_facet | García-Barceló, J. M. Navarro-Madrid, Jose R. Díaz-Morcillo, Alejandro |
| contents | In this work, a study on the development of scalable multicavity architectures for axion haloscopes, based on a hexagonal coaxial geometry operating at $30$ GHz frequencies, is presented. To enhance the scanning rate and sensitivity within the limited volume of experimental magnet bores, the transition from a baseline single-cavity design to dual and triple-subcavity configurations is investigated. A novel tuning mechanism based on the rotation of one or two inner hexagonal prisms is implemented, providing a robust method to shift the resonant frequency while maintaining high form and quality factors. The results show that the triple-subcavity design achieves an improvement of $\times3$ over the single-cavity baseline. The scaling potential of quad-subcavity architectures under a strict radial constraint of $25$ mm is further explored. Theoretical analysis confirms that a four-subcavity system is feasible within a certain radial clearance, provided that wall thicknesses are strategically optimised to ensure frequency stability. The practical challenges associated with mode splitting, manufacturing tolerances, and thermal management in these high-order systems are also discussed. This one-port multicavity approach offers a viable path toward increasing the sensitive volume of haloscopes, enabling more efficient exploration of the axion dark matter parameter space in high-frequency regimes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_08932 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A study of multicavity concept applied to hexagonal coaxial haloscopes García-Barceló, J. M. Navarro-Madrid, Jose R. Díaz-Morcillo, Alejandro High Energy Physics - Experiment Instrumentation and Detectors In this work, a study on the development of scalable multicavity architectures for axion haloscopes, based on a hexagonal coaxial geometry operating at $30$ GHz frequencies, is presented. To enhance the scanning rate and sensitivity within the limited volume of experimental magnet bores, the transition from a baseline single-cavity design to dual and triple-subcavity configurations is investigated. A novel tuning mechanism based on the rotation of one or two inner hexagonal prisms is implemented, providing a robust method to shift the resonant frequency while maintaining high form and quality factors. The results show that the triple-subcavity design achieves an improvement of $\times3$ over the single-cavity baseline. The scaling potential of quad-subcavity architectures under a strict radial constraint of $25$ mm is further explored. Theoretical analysis confirms that a four-subcavity system is feasible within a certain radial clearance, provided that wall thicknesses are strategically optimised to ensure frequency stability. The practical challenges associated with mode splitting, manufacturing tolerances, and thermal management in these high-order systems are also discussed. This one-port multicavity approach offers a viable path toward increasing the sensitive volume of haloscopes, enabling more efficient exploration of the axion dark matter parameter space in high-frequency regimes. |
| title | A study of multicavity concept applied to hexagonal coaxial haloscopes |
| topic | High Energy Physics - Experiment Instrumentation and Detectors |
| url | https://arxiv.org/abs/2605.08932 |