High quality factor photonic cavity for dark matter axion searches.
Rev Sci Instrum
; 91(9): 094701, 2020 Sep 01.
Article
em En
| MEDLINE
| ID: mdl-33003802
ABSTRACT
Searches for dark matter axions involve the use of microwave resonant cavities operating in a strong magnetic field. Detector sensitivity is directly related to the cavity quality factor, which is limited, until recently, to the use of non-superconducting metals by the presence of the external magnetic field. In this paper, we present a cavity of novel design whose quality factor is not affected by a magnetic field. It is based on a photonic structure by the use of sapphire rods. The quality factor at cryogenic temperature is in excess of 5 × 105 for a selected mode.
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MEDLINE
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En
Ano de publicação:
2020
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Article