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Contribution to a conference proceedings/Internal Report | PUBDB-2016-01074 |
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2011
Deutsches Elektronen-Synchrotron, DESY
Hamburg
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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2011-04/rybka_gray
Report No.: DESY-PROC-2011-04
Abstract: 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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