The Japanese-Canadian TUCAN (TRIUMF UltraCold Advanced Neutron) collaboration is currently building a next generation ultracold neutron source at TRIUMF, Vancouver, Canada. This superthermal source is based on conversion of fast neutrons from a spallation target to the ultracold regime in liquid, superfluid helium. We expect to deliver around $10^7$ UCN per second at the exit of the source....
Ultra-cold neutrons (UCN) are the slowest class of neutrons with typical energies in the neV range. They show the unique property that they are reflected at any angle from materials with sufficiently high optical potential, so that it becomes possible to confine and store them in material traps. The storage time can reach several hundred seconds and is theoretically limited by the free...
