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March 29, 2023 to April 1, 2023
UCLA
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Calibrating the Migdal Effect in Semiconductors

Mar 29, 2023, 7:14 PM
1m
Faculty Center

Faculty Center

Speaker

Daniel Baxter (Fermi National Accelerator Laboratory)

Description

The Migdal Effect has seen a surge of interest in recent years, and has been leveraged to set what are in fact the strongest limits on nuclear recoils of dark matter below masses of a few GeV. While the existence of the Migdal Effect only relies on fairly basic quantum mechanics, the matrix elements involved have never been directly calibrated. I lay out the importance of measuring the Migdal effect through low-energy nuclear recoil calibrations, what sort of signal to expect in such a neutron calibration experiment with a semiconductor target, and propose one such experimental setup that could be capable of performing this calibration using the NEXUS facility at Fermilab.

Author

Daniel Baxter (Fermi National Accelerator Laboratory)

Presentation materials