Experiment on search for neutron_antineutron oscillations using a projected UCN source at the WWR-M reactor

International Conference on Particle Physics and Astrophysics

物理学;天文学

Fomin, A.K.^1 ; Serebrov, A.P.^1 ; Zherebtsov, O.M.^1 ; Leonova, E.N.^1 ; Chaikovskii, M.E.^1

Petersburg Nuclear Physics Institute NRC KI, Gatchina, Leningrad region

188300, Russia^1

关键词: Experimental scheme;    High intensity;    Nuclear physics institutes;    Orders of magnitude;    Storage of ultracold neutrons;    Trap size;    UCN sources;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/798/1/012115/pdf
DOI  :  10.1088/1742-6596/798/1/012115

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

We propose an experiment on search for neutron-antineutron oscillations based on the storage of ultracold neutrons (UCN) in a material trap. The sensitivity of the experiment mostly depends on the trap size and the amount of UCN in it. In Petersburg Nuclear Physics Institute (PNPI) a high-intensity UCN source is projected at the WWR-M reactor, which must provide UCN density 2-3 orders of magnitude higher than existing sources. The results of simulations of the designed experimental scheme show that the sensitivity can be increased by ∼ 10-40 times compared to sensitivity of previous experiment depending on the model of neutron reflection from walls.