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Speaker: Gianpaolo Carosi (LLNL) – Title: Tuning into Dark Matter with the ADMX experiment
November 6 @ 4:00 pm - 5:00 pm
Research Progress Meeting
Date: November 6, 2025
Time: 4:00- 5:00 pm
Location: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]
Speaker: Gianpaolo Carosi (LLNL)
Title: Tuning into Dark Matter with the ADMX experiment
Abstract: The primordial axion remains one of the best solutions to both dark matter and the strong-CP problem (or why the neutron doesn’t have a measurable electric-dipole moment). The Axion Dark Matter Experiment (ADMX), which started at Lawrence Livermore National Laboratory in the mid-1990s, is the DOE Flagship search for these particles in the micro-eV mass range. The experiment uses tunable resonant cavities in a large static magnetic field to enhance the conversion of dark matter axions to detectable microwaves in the GHz range. Quantum-limited amplifiers based on superconducting Josephson Junction circuits are critical to allow the search to be sensitive enough to rapidly scan the frequencies where the axion may exist. Here I will describe the detection strategy of ADMX, the progress made so far and outline the potential next phase of the experiment dubbed ADMX-Extended Frequency Range (ADMX-EFR). I will also discuss LLNL’s involvement in the nascent BREAD broadband axion search.
https://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09
Meeting ID: 988 5432 2464
Passcode: 142239