Mar 20 – 23, 2023
Campus Garching
Europe/Berlin timezone

Development of a Time-of-Flight Grating Interferometer for the Measurement of the Neutron Electric Charge

Mar 21, 2023, 4:00 PM
Yards 4 - 6 (Fakultät für Maschinenwesen)

Yards 4 - 6

Fakultät für Maschinenwesen

Board: TU-184
Poster Fundamental Science Poster session TUESDAY


Marc Persoz (Universität Bern)


Neutron grating interferometers can be employed as powerful tools to perform high-precision measurements of deflection angles and scattering. A novel concept of a symmetric Talbot-Lau interferometer using three identical absorption gratings in a time-of-flight mode is under development at the University of Bern. The ultimate goal of this project is to conduct a sensitive measurement of the neutron electric charge and to improve the current best upper limit $(−0.4 ± 1.1) × 10^{-21}~e$ [Baumann et al., 1988]. A proof-of-principle apparatus has been characterized at the cold neutron beamline BOA at the Paul Scherrer Institute, Switzerland. A description of the experiment, alignment procedures and first results concerning beam deflections measurements and the setup stability will be presented.

Primary author

Marc Persoz (Universität Bern)

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