Open AccessИсточник ультрахолодных нейтронов на основе сверхтекучего гелия для реактора ПИК
Author(s) -
A. P. Serebrov,
В.А. Лямкин,
А.К. Фомин,
М.С. Онегин
Publication year - 2022
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2022.06.52522.21-22
Subject(s) - physics , neutron source , superfluid helium 4 , nuclear physics , superfluidity , heat exchanger , neutron , nuclear engineering , research reactor , liquid helium , spectrometer , helium , atomic physics , optics , engineering , condensed matter physics , thermodynamics
The PIK reactor at NRC "Kurchatov Institute" - PNPI is going to be equipped with a high-flux Ultra Cold Neutron (UCN) source for fundamental physics researches. The UCN source will use superfluid helium, which will make possible to achieve the density of UCN 2.2·10^3 cm-3, that has not yet been achieved anywhere in the world. The UCN source will be installed on the GEK-4 channel, which will make possible to obtain a low value of heat influx to cryogenic vessels from reactor radiation. The heat removal from the UCN source vessel will be implemented by using a heat exchanger. The calculated UCN density in the EDM spectrometer chamber at the PIK is going to be 200 cm-3, which is 20 times higher than the existing UCN densities in the world. For a new UCN source based on superfluid helium, an extensive research program has been developed in field of the physics of fundamental interactions, including the search for a nonzero neutron EDM, precision measurement of the neutron lifetime, and search for mirror dark matter.