Title of article
Ultracold-neutron infrastructure for the gravitational spectrometer GRANIT
Author/Authors
Schmidt-Wellenburg، نويسنده , , P. and Andersen، نويسنده , , K.H. and Courtois، نويسنده , , P. and Kreuz، نويسنده , , M. and Mironov، نويسنده , , S. and Nesvizhevsky، نويسنده , , V.V. and Pignol، نويسنده , , G. and Protasov، نويسنده , , K.V. and Soldner، نويسنده , , T. and Vezzu، نويسنده , , F. and Zimmer، نويسنده , , O.، نويسنده ,
Pages
5
From page
267
To page
271
Abstract
The gravitational spectrometer GRANIT will be set up at the Institut Laue Langevin. It will profit from the high ultracold neutron density produced by a dedicated source. A monochromator made of crystals from graphite intercalated with potassium will provide a neutron beam with 8.9 Å incident on the source. The source employs superthermal conversion of cold neutrons in superfluid helium, in a vessel made from BeO ceramics with Be windows. A special extraction technique has been tested which feeds the spectrometer only with neutrons with a vertical velocity component v ⊥ ≤ 20 cm s - 1 , thus keeping the density in the source high. This new source is expected to provide a density of up to ρ = 800 cm - 3 for the spectrometer.
Keywords
Ultracold neutron production , Potassium graphite intercalated compound , Ultracold neutron
Journal title
Astroparticle Physics
Record number
1991314
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