… -edge UCN measurements … He-II scattering kernel used as well as reductions in PUCN
due to pressurization to reach PUCN ¼ 1.8 Â 109 s À1. Finally, we provide a design for the UCN …

… state He-II can convert cold neutrons with an energy of 1 meV … only the source itself, we can
use an estimator for the UCN … studies we kept the dimensions of the UCN-converter volume …

… He-II based UCN source at the European Spallation Source. … At a reactor power of 16 MW,
the measured gain factor in the … This section presents ideas for He-II based UCN sources in …

… UCN production in a He-II converter relies on the possibility of nearly entire neutron energy
… is a much weaker dependence of UCN density on chamber size. They thus combine high …

… the spallation target where additional neutron sources can … CN conversion to UCN in superfluid
4 He, also called He-II. The … To calculate the intensity we considered the following size of …

… of phonons excited in He-II and become UCNs. The prototype UCN source using this method
… was transported from RCNP to TRIUMF and was installed above the spallation target on …

… broad range of neutron energies, from thermal to UCN, … A He-II source placed in the LBP
would provide higher UCN … , we used a source aperture of 4-mm diameter and a pixel size of 4 …

… a source for ultracold neutrons at a new, dedicated spallation target … He-II) at temperatures
below 1 K. Solid deuterium offers a rich spectrum of solid-state excitations, offering a high UCN…

… The UCN source is composed of a spallation neutron source … High-energy neutrons are
produced by spallation reaction … by our latest measurements, we can thus achieve a UCN source …

… of a future UCN source at the European Spallation Source (ESS) … Concerning the fact, that
for a He-II source temperatures … , as these are fabricated by welding of foils of variable size. …