Speaker
Barkotel Zemenu
(Stanford University)
Description
DMRadio-50L is a resonant low-mass axion search utilizing a low-noise amplifier. The experiment’s sensitivity depends on tuning the resonator-amplifier coupling to approach a quantum-limited amplifier noise. This frequency-dependent coupling must be optimized in real-time across the experiment’s frequency range. In this poster, I will introduce a tunable transformer developed for this purpose and discuss its cryogenic performance and integration into DMRadio-50L.
Author
Barkotel Zemenu
(Stanford University)
