1. Split-cavity tuning of a rectangular axion haloscope operating around 8.4 GHz.
- Author
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Golm, Jessica, García-Barcelo, Jose María, Cuendis, Sergio Arguedas, Calatroni, Sergio, Wuensch, Walter, Dobrich, Babette, Gu Chen, Torrisi, Giuseppe, and SungWoo Youn,
- Subjects
AXIONS ,DARK matter ,QUALITY factor - Abstract
The axion haloscope is the currently most sensitive method to probe the vanishingly small coupling of this prominent Dark Matter candidate to photons. To scan a sizeable axion Dark Matter parameter space, the cavities that make up the haloscope need to be tuned efficiently. In this article, we describe a novel technique to tune axion haloscopes around 8.4 GHz in a purely mechanical manner without the use of dielectrics. We achieve tuning by introducing a gap along the cavity geometry. A quality factor reduction of less than 20% is achieved experimentally for a tuning range of around 600 MHz at room temperature and at cryogenic temperatures for around 300 MHz. A larger tuning range would require an improved alignments mechanism. We present the results of a corresponding prototype and outline prospects to further develop this technique. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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