Mainz 2017 – scientific programme
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A: Fachverband Atomphysik
A 26: Poster Session II
A 26.46: Poster
Wednesday, March 8, 2017, 17:00–19:00, P OG1
CASPEr: The Cosmic Axion Spin Precession Experiment — •Nataniel Figueroa Leigh1, Gary Centers1, Marina Gil Sendra1, Arne Wickenbrock1, John Blanchard1, Dmitry Budker1, and CASPEr Collaboration2 — 1Helmholtz Institute, Johannes Gutenberg University, Mainz — 2Various Locations
Out of all the mass in the universe, no one knows what ∼85% of it is made of; this makes dark matter one of the biggest open questions in physics. In this context, the axion rises as a prime candidate that could account for the dark matter content of the universe. The CASPEr experiment seeks to exclude parameter space of (or find) axions by using a spin ensemble that transduces the usually inert axion wind field into a measurable magnetic signal, which can then be detected using conventional methods. What makes this challenging is that the coupling of the axions to the spin “antenna" -and thus, the signal- is small, which must be accounted for by using techniques that enhance the signal. This poster presents the overall CASPEr experiment and recent advances towards a working CASPEr-Wind experiment in Mainz.