1–4 Mar 2022
Mainz Institute for Theoretical Physics, Johannes Gutenberg University
Europe/Berlin timezone

Lumped element detection for low-mass axions: ABRACADABRA and DMRadio

3 Mar 2022, 18:50
20m
Mainz Institute for Theoretical Physics, Johannes Gutenberg University

Mainz Institute for Theoretical Physics, Johannes Gutenberg University

Virtual Workshop

Speaker

Chiara Salemi

Description

Axions with low masses (less than ~1 \mu eV) have wavelengths that are too large to fit inside a reasonably-sized experiment. In this regime, axion-photon interactions in a strong magnetic field produce an effective current that is in phase across an entire detector. This effective current can be inductively coupled to a circuit and read out using high-sensitivity amplifiers. ABRACADABRA-10 cm gave the first demonstration of this technique, setting world-leading limits on axion dark matter with masses 0.3-8.3 neV. This program is continuing with DMRadio, a set of lumped element experiments currently being designed with the goal of searching for ALP and QCD axion dark matter over a wide range of masses below 1 \mu eV.

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