Tuning Systems and Bead Pull Measurements for the ADMX-Run2a 4-Cavity Array
ORAL
Abstract
The Axion Dark Matter eXperiment (ADMX) searches for the hypothetical axion as a dark matter candidate in the Milky Way halo using high-Q cavity resonators and quantum amplifiers to reach DFSZ sensitivity. After scanning the 2–4 μeV mass range with a single cavity, the upcoming run will deploy a 4-cavity array, combining their signals coherently to extend coverage up to ~7 μeV without reducing the magnet volume. The 4-cavity array design has evolved through several years of R&D, including extensive RF and bead-pull tests. Both piezo and stepper-motor tuning systems have been implemented and evaluated. This talk will summarize recent design choices and performance results from the 4-cavity array development.
*This work is supported by U.S. Department of Energy through Awards No.DE-SC0009800,No.DE-SC0009723,No.DE-SC0010296,No.DE-SC0010280,No.DE-SC0011665,No.DEFG02-97ER41029,No.DE-FG02-96ER40956,No.DE-AC52-07NA27344,No.DE-C03-76SF00098,No.DE-SC-0022148,No.DE-SC0017987 and others.
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Presenters
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On Kim
- University of Washington