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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 8: Poster AKBP

AKBP 8.9: Poster

Mittwoch, 11. März 2026, 09:30–11:00, P4

Preliminary Studies for a Colliding Beam Møller Polarimeter — •Philipp J. Kompa — JGU Mainz

The Colliding Beam Møller Polarimeter is a proposed setup for measuring the spin polarisation of electron beams with high precision. The proposed setup promises improved systematic uncertainties compared to existing polarimeters which have uncertainties around 0.5%. There are some experimental challenges, one of them being the low cross section of Møller scattering and the therefore low scattering rate even with the high average currents needed for experiments at MESA.

This work discusses the experimental challenges, focusing on background measurements and estimations of how far the background may be suppressed by using coincident measurement of the scattered electrons.

Keywords: Polarimetry; electron spin polarisation; Møller scattering; MESA