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Spallation UCN Production for nEDM

Authors
Journal
Physics Procedia
1875-3892
Publisher
Elsevier
Volume
51
Identifiers
DOI: 10.1016/j.phpro.2013.12.020
Keywords
  • Ucn
  • Edm
  • Superfluid Helium
Disciplines
  • Physics

Abstract

Abstract A new superthermal UCN production in He-II, which is placed in a spallation neutron source, is discussed. In the new UCN source, the production rate is expected to be 200 UCN/cm3/s at a proton beam power of 500 MeV×40μA and the UCN maximum energy of Ec = 210 neV. The γ heating in the He-II can be removed by means of 3He pumping according to calculations. For an EDM measurement, UCN are extracted from a He-II bottle through an aluminum window by using a superconducting magnet. The possibility of a 129Xe magnetometer for the EDM measurement is also discussed.

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