Mezei, F. (2015) Beam extraction and delivery at compact neutron sources. Il nuovo cimento C, 38 (6). pp. 1-7. ISSN 1826-9885
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Abstract
The beam performance of a source of radiation is primarily characterized by its brightness, which remains constant in a conservative force field along the propagation of the beam. The neutron flux at an area with direct view to a homogenous radiation emitting moderator surface will just depend on the solid angle of beam divergence as determined by the moderator size. Recently it was found that by reducing the size of neutron moderators their brightness can be enhanced by a factor in the range of up to 3–6. In direct view of such moderators from sizable distances often required in neutron scattering applications the beam divergence will become reduced. Supermirror based neutron optical guide systems allow us to deliver neutron beam divergences independently of distance from the source. Due to the low radiation fields at compact sources such systems can be placed close to the neutron emitting moderators, a specific advantage and a new design feature. Focusing type neutron guides with phase space acceptance properly matched to the phase space to be delivered over distance can provide for beam delivery with small losses of brightness within a convenient and flexible range of beam parameters.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Neutron diffraction and scattering; Neutron sources |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 23 Jun 2020 09:48 |
| Last Modified: | 23 Jun 2020 09:48 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/19180 |
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