2nd Workshop on Microwave Cavities and Detectors for Axion Research

First results from a microwave cavity axion search at 24 μeV

12 Jan 2017, 09:00

35m

LVOC - Yosemite Room (Lawrence Livermore National Laboratory)

Speaker

Benjamin Brubaker (Yale University)

Description

I will report on the first results from a new search for axion dark matter using a microwave cavity detector at ~5 GHz frequencies. This detector has achieved near-quantum-limited sensitivity using a dilution refrigerator and Josephson parametric amplifier, and excluded axion-photon-photon couplings a factor of 2.3 above the benchmark KSVZ model in the mass range 23.55 μeV< m <24.0 μeV. These are the first limits within the QCD axion model band in the mass decade above 10 μeV.

Presentation materials

Slides

LLNL_1_2017_brubaker.pdf