scholarly journals MEASUREMENTS OF MICA CRYSTAL BRAGG REFLECTIONS. OPTIMIZATION OF PULSED SPALLATION SOURCE DOPPLER CONVERTERS FOR ULTRACOLD NEUTRON PRODUCTION

1999 ◽  
Author(s):  
M. L. CROW ◽  
A. STEYERL
Keyword(s):  
Neutron Production ◽  
Ultracold Neutron ◽  
Spallation Source ◽  
Mica Crystal

Spallation Ultracold-Neutron Production in Superfluid Helium

2002 ◽  
Vol 89 (28) ◽  
Author(s):  
Y. Masuda ◽  
T. Kitagaki ◽  
K. Hatanaka ◽  
M. Higuchi ◽  
S. Ishimoto ◽  
...  
Keyword(s):  
Superfluid Helium ◽  
Neutron Production ◽  
Ultracold Neutron

scholarly journals Liquid hydrogen for cold neutron production at European Spallation Source ERIC

2018 ◽  
Vol 1021 ◽  
pp. 012078
Author(s):  
Jesper Ringnér ◽  
M. Klaus ◽  
J. Jurns ◽  
Y. Beßler ◽  
D. Lyngh
Keyword(s):  
Cold Neutron ◽  
Liquid Hydrogen ◽  
Neutron Production ◽  
Spallation Source

Estimation of the ultracold neutron production by a source designed for the WWR-M reactor

2017 ◽  
Vol 62 (4) ◽  
pp. 633-637 ◽  
Author(s):  
M. S. Onegin ◽  
A. P. Serebrov ◽  
A. K. Fomin ◽  
V. A. Lyamkin
Keyword(s):  
Neutron Production ◽  
Ultracold Neutron

Lifetime assessment of functional components in the ESS target environment during beam energy ramp up

2020 ◽  
Vol 22 (2-3) ◽  
pp. 299-308
Author(s):  
Yongjoong Lee
Keyword(s):  
Radiation Damage ◽  
Proton Beam ◽  
Beam Energy ◽  
Neutron Production ◽  
Target Station ◽  
Fundamental Properties ◽  
Radiation Induced ◽  
Spallation Source ◽  
Target Environment ◽  
Functional Components

The Target Station at the European Spallation Source (ESS) is designed to convert high power proton beam to high brightness neutron beams, for studying fundamental properties of materials. Upon commissioning of the ‘beam on target’ planned in 2022, the ESS linac will deliver lower energy proton beam than the design value of 2 GeV, for neutron production. The beam energy will then be gradually ramped up, with the sequential commissioning of the downstream part of the superconducting cryomodules. During neutron production, the beam intercepting devices and moderators are exposed to intense flux of primary and secondary particles, suffering from radiation induced structural degradation. The extent of the radiation damage depends on the energy and intensity of the impinging protons. Currently, the lifetime criteria determined for these components are based on the 2 GeV beam energy. To secure availability and reliability of the neutron production during the beam energy ramp-up phase, the radiation damage rates in these components should be reassessed and the lifetime criteria be adjusted. In this paper, we present the lifetime criteria for the beam intercepting devices and moderators for different beam energies, to serve for the planning of the maintenance and replacement schedule during the proton energy ramp-up phase.

Observation of ultracold-neutron production by 9-Å cold neutrons in superfluid helium

1992 ◽  
Vol 68 (9) ◽  
pp. 1323-1326 ◽  
Author(s):  
H. Yoshiki ◽  
K. Sakai ◽  
M. Ogura ◽  
T. Kawai ◽  
Y. Masuda ◽  
...  
Keyword(s):  
Superfluid Helium ◽  
Neutron Production ◽  
Ultracold Neutron ◽  
Cold Neutrons
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