The Axion Dark Matter eXperiment (ADMX) is the first axion haloscope search to reach DFSZ sensitivity in any mass range for the QCD axion. The QCD axion is a well-motivated dark matter candidate that additionally solves the strong CP problem in nuclear physics. A haloscope has three necessary components; a very strong external magnet, a high Q cavity resonator embedded in this field, and an ultra-sensitive RF read-out system. This dissertation mainly reports on the future development of the resonators for ADMX, specifically superconducting RF (SRF) cavities. It starts with an overview of axions, haloscopes, and the current ADMX experiment, followed by the work done at Lawrence Livermore National Laboratory (LLNL) on SRF cavities, and finally the preliminary results of the ADMX "hybrid" superconducting-copper Sidecar cavity in run 1D.
A tunable photonic band gap resonator for axion dark matter searches
Wellesley College（韦尔斯利学院）；University of California, Davis（加州大学戴维斯分校）；University of California, Berkeley（加州大学伯克利分校）；Brown University（布朗大学）；Yale University（耶鲁大学）；Los Alamos National Laboratory（洛斯阿拉莫斯国家实验室）
A new class of axion haloscope resonators: the polygonal coaxial cavity
INFN, Laboratori Nazionali di Legnaro（意大利国家核物理研究所，莱尼亚罗国家实验室）；Dipartimento di Fisica e Astronomia, Padova（帕多瓦大学物理与天文学系）；INFN, Sezione di Padova（意大利国家核物理研究所，帕多瓦分部）
