77 citations · 234 across the 11 of their papers we have counts for
6 papers · 1 filter
UPLOAD-HELIX: High-Helicity Single-Mode Microwave Haloscope with Low-Noise Interferometric Readout for Ultralight Axion Dark Matter
Robert C. Crew, Emma C. I. Paterson, Maxim Goryachev +5
We propose a superconducting single-mode microwave haloscope based on chiral cavity resonators for the detection of ultralight dark matter axions over the mass range $4\times10^{-1…
A Search for Effects of Cosmic Rays with Multi-scale Entropy Metrics
William M. Campbell, Ben T. McAllister, Eugene N. Ivanov +4
We report a comparison of frequency fluctuations in oven-controlled quartz bulk-acoustic-wave oscillators operated above ground and one kilometre underground in a low-muon-backgrou…
The Study of Thermal Fluctuations in Microwave and Mechanical Resonators
Michael T Hatzon, Eugene N Ivanov, Aaron Quiskamp +1
We report high-resolution measurements of thermal fluctuations in microwave and mechanical resonators using a dual-channel readout system. The latter comprises a low-noise amplifie…
Rigorous analysis of highly tunable cylindrical Transverse Magnetic mode re-entrant cavities
J-M. Le Floch, Y. Fan, M. Aubourg +8
Cylindrical re-entrant cavities are unique three-dimensional structures that resonate with their electric and magnetic fields in separate parts of the cavity. To further understand…
Long Term Operation and Performance of Cryogenic Sapphire Oscillators
M. E. Tobar, E. N. Ivanov, C. R. Locke +12
Cryogenic Sapphire Oscillators (CSO) developed at UWA have now been in operation around the world continuously for many years. Such oscillators, due to their excellent spectral pur…
Cryogenic sapphire oscillator with exceptionally high long-term frequency stability
J. G. Hartnett, C. R. Locke, E. N. Ivanov +2
We report on the development of a sapphire cryogenic microwave resonator oscillator long-term fractional frequency stability of 2x10^-17Sqrt[τ] for integration times τ>10^3 s and n…