TY - JOUR
T1 - Neutron focusing system for the Texas Cold Neutron Source
AU - Wehring, Bernard W.
AU - Kim, Jong Youl
AU - Ünlü, Kenan
N1 - Funding Information:
The authors would like to acknowledge the helpful discussions of the following individuals: D.F.R. Mildner and G. Downing of National Institute of Standards and Technology, and J.E. Keem and N. Grupido of Ovonic Synthetic Materials Company, Troy, Michigan . This work was supported by a grant from DOE, Grant Number : DE-FG02-92ER-75711 and DE-FG03-93ER-75878 .
PY - 1994/12/30
Y1 - 1994/12/30
N2 - A "converging neutron guide" focusing system located at the end of the Texas Cold Neutron Source (TCNS) "curved neutron guide" would increase the neutron flux for neutron capture experiments. Our design for a converging guide is based on using several rectangular truncated cone sections. Each rectangular truncated cone consists of four 20-cm long Si plates coated with NiC-Ti supermirrors. Dimensions of each section were determined by a three-dimensional Monte Carlo optimization calculation. The two slant angles of the truncated cones were varied to optimize the neutron flux at the focal area of the focusing system. Different multielement converging guides were designed and their performance analyzed. From the performance results and financial considerations, we selected a four-section 80-cm long converging guide focusing system for construction and use with the TCNS. The focused cold neutron beam will be used for neutron capture experiment, e.g., prompt gamma activation analysis and neutron depth profiling.
AB - A "converging neutron guide" focusing system located at the end of the Texas Cold Neutron Source (TCNS) "curved neutron guide" would increase the neutron flux for neutron capture experiments. Our design for a converging guide is based on using several rectangular truncated cone sections. Each rectangular truncated cone consists of four 20-cm long Si plates coated with NiC-Ti supermirrors. Dimensions of each section were determined by a three-dimensional Monte Carlo optimization calculation. The two slant angles of the truncated cones were varied to optimize the neutron flux at the focal area of the focusing system. Different multielement converging guides were designed and their performance analyzed. From the performance results and financial considerations, we selected a four-section 80-cm long converging guide focusing system for construction and use with the TCNS. The focused cold neutron beam will be used for neutron capture experiment, e.g., prompt gamma activation analysis and neutron depth profiling.
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U2 - 10.1016/0168-9002(94)91620-9
DO - 10.1016/0168-9002(94)91620-9
M3 - Article
AN - SCOPUS:0344799162
SN - 0168-9002
VL - 353
SP - 137
EP - 140
JO - Nuclear Inst. and Methods in Physics Research, A
JF - Nuclear Inst. and Methods in Physics Research, A
IS - 1-3
ER -