On the search of mirror neutron oscillations at low magnetic field with a beam experiment
This proposal is an extension of the project described in proposal No. 3-14-403. During the first campaign, neutron fluxes were measured as a function of the applied magnetic B-field. Oscillations towards the mirror world would be recognized by a sudden drop of the counting rate for a given magnetic field magnitude. The data analysis of the UCN counting rates, which were of the order of 3 x 10 5 counts/s, revealed non-counting-statistical fluctuations present in all scans whatever the applied B-field. We aim at characterizing the nature of these fluctuations since they reduce the sensitivity on the derived limit of the oscillation time tau_nn' by a factor between 2 and 3. Therefore, we plan to record the UCN flux under different configurations at the EDM beam port: as a function of the distance from the turbine exit, with two different counters, and without B-field.
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SAENZ AREVALO William David; BAN Gilles; CHIU Pin-Jung; CLEMENT Benoit; M. Guigue; JENKE Tobias; JIANQI CHEN; LARUE Pierre; LEFORT Thomas; PIGNOL Guillaume; REBREYEND Dominique; ROCCIA Stephanie and SCHMIDT-WELLENBURG Philipp. (2021). On the search of mirror neutron oscillations at low magnetic field with a beam experiment. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.3-14-419
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