The axion dark-matter eXperiment: Results and plans
- Asztalos, S. J.
- Bradley, R.
- Rybka, G.
- Sikivie, P.
- Sullivan, N. S.
- Tanner, D. B.
- van Bibber, K.
- Wagner, A.
- Carosi, G.
- Clarke, John
- Hagmann, C.
- Hoskins, J.
- Hotz, M.
- Kinion, D.
- Martin, C.
- Rosenberg, L. J.
Publication date
January 2011
DOI Publisher
Deutsches Elektronen-Synchrotron, DESYAbstract
The axion affects issues of the origin of CP symmetry in the strong interactions and the composition of the dark matter of the universe. Current constraints limit its mass to 1 $\mu$eV-10 meV, with the low end of this range (1-10 $\mu$eV) especially significant for dark-matter axions. Axions may be detected by their coupling to photons in a resonant cavity in a strong magnetic field. The Axion Dark-Matter eXperiment (ADMX) recently completed Phase I of an upgrade to its detector, incorporating SQUID electronics in the receiver front end and conducting a year-long data run. Phase II of the upgrade will install a high-capacity dilution refrigerator to cool the SQUID and cavity to $\sim$100 mK
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