Simulation of a D–T neutron source for neutron scattering experiments

✍ Scribed by T.P Lou; B.A Ludewigt; J.L Vujic; K.-N Leung

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 243 KB
• Volume: 521
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2003.10.093

✦ Synopsis

A new generation of high-yield fusion-based neutron generators is being developed at Lawrence Berkeley National Laboratory. Novel design features provide the potential for neutron yields as high as 10 14 n=s in a compact geometry. Such high neutron yields make the neutron generator applicable to the production of thermal or cold neutrons for neutron scattering experiments. This paper describes a scheme to simulate a neutron scattering setup and to estimate neutron flux and resolution with the particle transport code MCNP. For an estimated resolution of 1-4%, depending on the scattered angle and neutron energy, a thermal neutron flux at the sample position of 7 Â 10 5 n=cm 2 s has been estimated. Such a neutron generator is particularly suitable for cold neutron scattering experiments due to relatively longer flight times.