A new neutron polarimeter for measuring the neutron's electric form factor was designed and constructed to complement the A1 spectrometer setup at the Mainz Microtron (MAMI). The design is based on a previous polarimeter with significant improvements to halve the error of the extracted form factor. A higher granularity of the polarimeter sections and a deeper first section on the one hand, and a faster readout employing Time-over-Threshold methods to measure the signal amplitudes combined with a high-precision FPGA-based TDC on the other hand will allow to achieve this goal. The performance of the new polarimeter during a first measurement campaign in 2019 using liquid hydrogen and deuterium targets will be discussed.
@article{arxiv.2308.06131,
title = {A Highly Segmented Neutron Polarimeter for A1},
author = {R. Spreckels and M. Hoek and U. Müller and M. Thiel},
journal= {arXiv preprint arXiv:2308.06131},
year = {2023}
}