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Improving the Signal Readout of an eEDM Experiment

Sumbre, Vedang Kaustubh (2023) Improving the Signal Readout of an eEDM Experiment. Bachelor's Thesis, Physics.


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The NL-eEDM experiment aims to determine a new upper limit for the electron electric dipole moment, using a molecular BaF beam. The experiment uses the F = 0 and F = 1 hyperfine levels of the ground state. The molecules in one state are depleted using laser induced fluorescence. This produces the signal readout which shows two peaks corresponding to the two levels, with a frequency difference ωHF S = 46.86MHz between them. This thesis explores the use of acousto-optical modulators to improve the signal readout of the experiment by probing both hyperfine levels at once. First, a method is developed to model the molecular depletion with different laser intensity distributions and detuning. A 200MHz and a 40MHz AOM are used and compared, and the 40MHz AOM is chosen for implementation into the experiment, as the output beams have good spatial separation and power outputs.

Item Type: Thesis (Bachelor's Thesis)
Supervisor name: Willmann, L. and Even, J.
Degree programme: Physics
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 17 Jul 2023 12:40
Last Modified: 17 Jul 2023 12:40

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