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Title: Program of Fundamental-Interaction Research for the Ultracold-Neutron Source at the the WWR-M Reactor

Abstract

The use of ultracold neutrons opens unique possibilities for studying fundamental interactions in particles physics. Searches for the neutron electric dipole moment are aimed at testing models of CP violation. A precise measurement of the neutron lifetime is of paramount importance for cosmology and astrophysics. Considerable advances in these realms can be made with the aid of a new ultracold-neutron (UCN) supersource presently under construction at Petersburg Nuclear Physics Institute. With this source, it would be possible to obtain an UCN density approximately 100 times as high as that at currently the best UCN source at the high-flux reactor of the Institute Laue–Langevin (ILL, Grenoble, France). To date, the design and basic elements of the source have been prepared, tests of a full-scale source model have been performed, and the research program has been developed. It is planned to improve accuracy in measuring the neutron electric dipole moment by one order of magnitude to a level of 10{sup −27} to 10{sup −28}e cm. This is of crucial importance for particle physics. The accuracy in measuring the neutron lifetime can also be improved by one order of magnitude. Finally, experiments that would seek neutron–antineutron oscillations by employing ultracold neutrons will becomemore » possible upon reaching an UCN density of 10{sup 3} to 10{sup 4} cm{sup −3}. The current status of the source and the proposed research program are discussed.« less

Authors:
 [1]
  1. National Research Center Kurchatov Institute, Petersburg Nuclear Physics Institute (Russian Federation)
Publication Date:
OSTI Identifier:
22761744
Resource Type:
Journal Article
Journal Name:
Physics of Atomic Nuclei
Additional Journal Information:
Journal Volume: 81; Journal Issue: 2; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7788
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANTINEUTRONS; ASTROPHYSICS; COSMOLOGY; CP INVARIANCE; ELECTRIC DIPOLE MOMENTS; FUNDAMENTAL INTERACTIONS; NEUTRON DENSITY; NEUTRON SOURCES; RESEARCH PROGRAMS; ULTRACOLD NEUTRONS

Citation Formats

Serebrov, A. P., E-mail: serebrov-ap@pnpi.nrcki.ru. Program of Fundamental-Interaction Research for the Ultracold-Neutron Source at the the WWR-M Reactor. United States: N. p., 2018. Web. doi:10.1134/S1063778818020175.
Serebrov, A. P., E-mail: serebrov-ap@pnpi.nrcki.ru. Program of Fundamental-Interaction Research for the Ultracold-Neutron Source at the the WWR-M Reactor. United States. doi:10.1134/S1063778818020175.
Serebrov, A. P., E-mail: serebrov-ap@pnpi.nrcki.ru. Thu . "Program of Fundamental-Interaction Research for the Ultracold-Neutron Source at the the WWR-M Reactor". United States. doi:10.1134/S1063778818020175.
@article{osti_22761744,
title = {Program of Fundamental-Interaction Research for the Ultracold-Neutron Source at the the WWR-M Reactor},
author = {Serebrov, A. P., E-mail: serebrov-ap@pnpi.nrcki.ru},
abstractNote = {The use of ultracold neutrons opens unique possibilities for studying fundamental interactions in particles physics. Searches for the neutron electric dipole moment are aimed at testing models of CP violation. A precise measurement of the neutron lifetime is of paramount importance for cosmology and astrophysics. Considerable advances in these realms can be made with the aid of a new ultracold-neutron (UCN) supersource presently under construction at Petersburg Nuclear Physics Institute. With this source, it would be possible to obtain an UCN density approximately 100 times as high as that at currently the best UCN source at the high-flux reactor of the Institute Laue–Langevin (ILL, Grenoble, France). To date, the design and basic elements of the source have been prepared, tests of a full-scale source model have been performed, and the research program has been developed. It is planned to improve accuracy in measuring the neutron electric dipole moment by one order of magnitude to a level of 10{sup −27} to 10{sup −28}e cm. This is of crucial importance for particle physics. The accuracy in measuring the neutron lifetime can also be improved by one order of magnitude. Finally, experiments that would seek neutron–antineutron oscillations by employing ultracold neutrons will become possible upon reaching an UCN density of 10{sup 3} to 10{sup 4} cm{sup −3}. The current status of the source and the proposed research program are discussed.},
doi = {10.1134/S1063778818020175},
journal = {Physics of Atomic Nuclei},
issn = {1063-7788},
number = 2,
volume = 81,
place = {United States},
year = {2018},
month = {3}
}