A source of ultra-cold neutrons for the gravitational spectrometer GRANIT

Details A source of ultra-cold neutrons for the gravitational spectrometer GRANIT A source of ultra-cold neutrons for the gravitational spectrometer GRANIT

2007-08-10

arxiv.org/abs/0708.1373v2

Physics

Nuclear Physics

Nuclear Experiment

ISINN 15 conference proceeding Article has been replaced due to minor orthographic changes

Scientific paper

We present the status of the development of a dedicated high density ultra-cold neutron (UCN) source dedicated to the gravitational spectrometer GRANIT. The source employs superthermal conversion of cold neutrons to UCN in superfluid helium. Tests have shown that UCN produced inside the liquid can be extracted into vacuum. Furthermore a dedicated neutron selection channel was tested to maintain high initial density and extract only neutrons with a vertical velocity component 20 cm/s for the spectrometer. This new source would have a phase-space density of 0.18 cm-3(m/s)-3 for the spectrometer.

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