We note that one other experiment implemented a JTWPA in a receiver chain intended for axion searches, 33 though no axion search was performed as it was not placed in a magnetic field. 31 Nevertheless, the subsequently developed Josephson Traveling Wave Parametric Amplifier (JTWPA) 32 provides power gain over a much wider bandwidth of several GHz, which could further enable broadband axion searches. ![]() Recent developments have enabled the fabrication of modified JPAs that can provide bandwidth over as much as 640 MHz. 29,30 A limitation of these amplifiers is their narrowband nature. Such progress is attributable to the advent of ultra-low-noise quantum amplifiers, such as the Microstrip SQUID Amplifier (MSA) 28 and the Josephson Parametric Amplifier (JPA). Sensitivity to the DFSZ axion is therefore a noteworthy achievement. 17–27 Of the two, the DFSZ axion is the more difficult to detect, with signals of an order of magnitude smaller than the KSVZ axion. 1,15,16 Other haloscopes have achieved sensitivity to the band around the Kim–Schifman–Vainshtein–Zakharov (KSVZ) model of the axion. 13,14 The Axion Dark Matter eXperiment (ADMX) is one such experiment that is unique in its ability to detect Dine–Fischler–Srednicki–Zhitnitsky (DFSZ) axions. ![]() It will include presentations as well as live software demos that will be both beneficial for the novice as well as the experienced user.One method to render the axion visible is called the resonant cavity haloscope, first proposed by Pierre Sikivie. The CST ® Workshop Series 2017 will give design and research engineers an insight into the latest 3D simulation technology for designing electromagnetic components as well as assembled systems using CST STUDIO SUITE ® 2017. Join us for an exciting opportunity to learn about the latest developments in 3D electromagnetic simulation.
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