
Study of neutron focusing at the Texas Cold Neutron Source. Final report
Author(s) -
B.W. Wehring,
K. Uenlue
Publication year - 1995
Language(s) - English
Resource type - Reports
DOI - 10.2172/33120
Subject(s) - neutron , neutron source , nuclear physics , physics , neutron flux , nuclear engineering , monte carlo method , engineering , mathematics , statistics
Funds were received for the first year of a three year DOE Nuclear Engineering Research Grant, ``Study of Neutron Focusing at the Texas Cold Neutron Source`` (FGO2-92ER75711). The purpose of this three year study was to develop a neutron focusing system to be used with the Texas Cold Neutron Source (TCNS) to produce an intense beam of neutrons. A prompt gamma activation analysis (PGAA) facility was also to be designed, setup, and tested under the three year project. During the first year of the DOE grant, a new procedure was developed and used to design a focusing converging guide consisting of truncated rectangular cone sections. Detailed calculations were performed using a 3-D Monte Carlo code which we wrote to trace neutrons through the curved guide of the TCNS into the proposed converging guide. Using realistic reflectivities for Ni-Ti supermirrors, we obtained gains of 3 to 5 for the neutron flux averaged over an area of 1 {times} 1 cm