Conveners
Morning 5: Session 5
- Qing Xia (Lawrence Berkeley National Laboratory)
Axion haloscopes are powerfully sensitive tools designed explicitly to search for cold axion dark matter. Uniformly distributed dark matter axions are expected to produce a constant signal in a haloscope, but there is the potential to search for transient signals as well. I will discuss ideas in searches for nonstandard astrophysical axion sources, as well as non-axion signals such as...
WISPFI (WISP Searches on a Fiber Interferometer) is a novel table-top experiment designed to detect photon-axion conversion using resonant mixing. The experiment employs hollow-core photonic crystal fibers (HC-PCF) to fulfill the resonant condition, which can be precisely tuned by adjusting the gas pressure within the fiber. This technique enables the probing of an unexplored axion mass range...
For the search for axions, helioscopes are one of the original experiments that were introduced by Sikivie in 1983. Helioscopes are built with the idea that the Sun is a major source for axions thanks to its high core temperature. These axions would be produced through the Primakoff effect, processes relying on the axion-electron coupling and other mechanisms. In a helioscope, those solar...
The Axion Dark Matter eXperiment (ADMX) is one of the world’s leading direct detection searches for axion dark matter, currently located at the University of Washington. To date, ADMX G2 has excluded axion-photon couplings predicted by the KSVZ (DFSZ) model for the axion with masses between 2.66-4.2 𝝻eV (2.66-3.3 𝝻eV & 3.9-4.1 𝝻eV). We are currently continuing the search for axion dark matter...
Astrophysical objects such as white dwarfs, the remnants left by most stars after nuclear burning in the core has finished, are increasingly popular targets to search for evidence of axions. If axions interact with electrons, then axions could be produced at an appreciable rate in the dense, electron-degenerate core of a white dwarf via axion bremsstrahlung from electrons. The emission of...
The race for the discovery of the Dark Matter is as lively as ever; the axion and the WIMP are the two main particle candidates that could solve the mystery. The absence of signal in the typical mass window for the WIMP, of the order of 100GeV, has pushed the search to lower masses. The TREX-DM experiment is looking for low-mass WIMPs of the scale of 1-10 GeV/c2: it is a high-pressure gas Time...
