Hunting Dark Matter with the Axion Dark Matter eXperiment (ADMX)

Christian Boutan (PNNL)
Event Date and Time: 
Thu, 2018-03-22 16:00 - 17:00
Hennings 201
Local Contact: 
Douglas Scott
Intended Audience: 

The Axion is a well-motivated hypothetical elementary particle. Its existence is a consequence of a particularly elegant solution to the so-called "strong CP problem" of quantum chromodynamics (QCD). Not only would the discovery of the axion solve deep issues in QCD, an axion with a mass of μeV - meV could account for most or all of the missing mass in our galaxy and finally reveal the composition of dark matter. The Axion Dark Matter eXperiment (ADMX) is a DOE "Generation 2" direct-detection dark matter project searching for the resonant conversion of axions to photons in a tunable, high-Q microwave cavity surrounded by a strong magnetic field. Over the last decade, ADMX has undergone multiple upgrades and is now operating with unprecedented sensitivity, able to discover or rule out even the most pessimistically coupled QCD axions. I will motivate the axion as an excellent dark matter candidate, present an overview of ADMX and discuss results from our 2017 data run.

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