SQUID Amplifiers in the ADMX Detector

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© Lawrence Livermore National Laboratory.

The ADMX experiment is a carefully constructed precision experiment that could detect faint traces of axions. The superconducting magnet must be kept cold in a bath of liquid helium, and careful adjustment of the tuning rods ensures that the radio antenna is at exactly the right frequency. Thermal baffles prevent heat transfer with the environment, and the SQUID amplifier boosts the experiment's sensitivity enough to detect the faint signals that would indicate the presence of axions. (Unit: 10)