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The VORTEX cavity for the RADES axion haloscope

arXiv Physics Monday 03 August 2026, 03:42 UTC By Jose Mar\'ia Garc\'ia-Barcel\'o, Cristian Cogollos, Babette D\"obrich, David Kittlinger, Diego Nicolas Lobato-De La Cruz, Walter Wuensch 1 min read
Key Points

arXiv:2607.28883v1 Announce Type: new Abstract: One of the major challenges in axion dark matter haloscope searches is a loss-less tuning mechanism that is able to cover a significant frequency range around the haloscope's central frequency. In this article, we report on the implementation and performance of an axion haloscope dubbed Vertical-cut Optimised Resonant Tunable cavity for dark matter EXploration (VORTEX) centred at $8.5$ GHz with a tuning range of around $800$ MHz. The...

arXiv:2607.28883v1 Announce Type: new Abstract: One of the major challenges in axion dark matter haloscope searches is a loss-less tuning mechanism that is able to cover a significant frequency range around the haloscope's central frequency. In this article, we report on the implementation and performance of an axion haloscope dubbed Vertical-cut Optimised Resonant Tunable cavity for dark matter EXploration (VORTEX) centred at $8.5$ GHz with a tuning range of around $800$ MHz. The performance of this setup is measured at temperatures in the mK range and compared to simulation. In addition, we test the cavity-mode structure of this cavity type directly via the `bead-pull method' and observe satisfactory agreement with expectations. The arrangement is poised to be used in an upcoming RADES (Relic Axion Detection Exploratory Setup) data-taking campaign employing a $12$ T solenoid magnet.
the RADES axion haloscope (ORG) Vertical (PERSON) RADES (ORG)
Originally published by arXiv Physics Read original →

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