Increasing the intensity of a slow molecular beam using an electrostatic hexapole

Hofslot, Joost van (2021) Increasing the intensity of a slow molecular beam using an electrostatic hexapole. Master's Thesis / Essay, Physics.

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Abstract

Heavy polar diatomic molecules can be used as sensitive probes of violations of fundamental symmetries. The NL-eEDM collaboration works towards a measurement of the permanent electric dipole moment of the electron using a slow, cold and intense beam of BaF molecules, to possibly find evidence of physics beyond the Standard Model. This work outlines the operating principles, design, implementation and testing of an electrostatic hexapole located between the cryogenic source and traveling-wave Stark decelerator. The combined effect of the hexapole lens and the addition of ac-guiding sections to the voltage waveform are estimated to increase the number of detected molecules in the fluorescence time of flight signal by at least a factor 2. With the hexapole lens in place, the focus can turn towards laser cooling of BaF. Reducing the tranverse velocity of the molecular beam is an essential step towards an eEDM measurement using a slow, intense and cold beam of BaF molecules.

Item Type:	Thesis (Master's Thesis / Essay)
Supervisor name:	Hoekstra, S. and Bethlem, H.L.
Degree programme:	Physics
Thesis type:	Master's Thesis / Essay
Language:	English
Date Deposited:	08 Oct 2021 09:13
Last Modified:	08 Oct 2021 09:13
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/26158

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