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Haloscopes, microwave resonant cavities utilized in detecting dark matteraxions within powerful static magnetic fields, are pivotal in modernastrophysical research. This paper delves into the realm of cylindricalgeometries, investigating techniques to augment volume and enhancecompatibility with dipole or solenoid magnets. The study explores volumeconstraints in two categories of haloscope designs: those reliant on singlecavities and those employing multicavities. In both categories, strategies toincrease the expanse of elongated structures are elucidated. For multicavities,the optimization of space within magnets is explored through 1D configurations.Three subcavity stacking approaches are investigated, while the foray into 2Dand 3D geometries lays the groundwork for future topological developments. Theresults underscore the efficacy of these methods, revealing substantial roomfor progress in cylindrical haloscope design. Notably, an elongated singlecavity design attains a three-order magnitude increase in volume compared to aWC-109 standard waveguide-based single cavity. Diverse prototypes featuringsingle cavities, 1D, 2D, and 3D multicavities highlight the feasibility ofleveraging these geometries to magnify the volume of tangible haloscopeimplementations.

Enhancing resonant circular-section haloscopes for dark matter axion detection: approaches and limitations in volume expansion