Piezoelectrically Tuned Multimode Cavity Search for Axion Dark Matter

(10) Washington University; (11) University of G\"ottingen); (2) University of Washington; (3) Lawrence Livermore National Laboratory; (4) Fermi National Accelerator Laboratory; (5) National Radio Astronomy Observatory; (6) University of Sheffield; (7) University of Chicago; (8) University of California Berkeley; (9) University of Florida

arxiv: 1901.00920 · v1 · pith:IFY5CMQWnew · submitted 2019-01-03 · ✦ hep-ex · astro-ph.CO· physics.ins-det

Piezoelectrically Tuned Multimode Cavity Search for Axion Dark Matter

C. Boutan (1) , M. Jones (1) , B. H. LaRoque (1) , N. S. Oblath (1) , R. Cervantes (2) , N. Du (2) , N. Force (2) , S. Kimes (2)

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R. Ottens (2) L. J. Rosenberg (2) G. Rybka (2) J. Yang (2) G. Carosi (3) N. Woollett (3) D. Bowring (4) A. S. Chou (4) R. Khatiwada (4) A. Sonnenschein (4) W. Wester (4) R. Bradley (5) E. J. Daw (6) A. Agrawal (7) A. V. Dixit (7) J. Clarke (8) S. R. O'Kelley (8) N. Crisosto (9) J. R. Gleason (9) S. Jois (9) P. Sikivie (9) I. Stern (9) N. S. Sullivan (9) D. B. Tanner (9) P. M. Harrington (10) E. Lentz (11) (the ADMX Collaboration) ((1) Pacific Northwest National Laboratory (2) University of Washington (3) Lawrence Livermore National Laboratory (4) Fermi National Accelerator Laboratory (5) National Radio Astronomy Observatory (6) University of Sheffield (7) University of Chicago (8) University of California Berkeley (9) University of Florida (10) Washington University (11) University of G\"ottingen)

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classification ✦ hep-ex astro-ph.COphysics.ins-det

keywords experimentadmxaxionsidecarcavitydarkmatterreport

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The $\mu$eV axion is a well-motivated extension to the standard model. The Axion Dark Matter eXperiment (ADMX) collaboration seeks to discover this particle by looking for the resonant conversion of dark-matter axions to microwave photons in a strong magnetic field. In this Letter, we report results from a pathfinder experiment, the ADMX "Sidecar," which is designed to pave the way for future, higher mass, searches. This testbed experiment lives inside of and operates in tandem with the main ADMX experiment. The Sidecar experiment excludes masses in three widely spaced frequency ranges (4202-4249, 5086-5799, and 7173-7203 MHz). In addition, Sidecar demonstrates the successful use of a piezoelectric actuator for cavity tuning. Finally, this publication is the first to report data measured using both the TM$_{010}$ and TM$_{020}$ modes.

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