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Fabrication and testing of high-performance all-metal neutron guides and axisymmetric mirrors by electrochemical replication

Published online by Cambridge University Press:  27 February 2020

B. Khaykovich*
Affiliation:
Nuclear Reactor Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, U.S.A.
S. Romaine
Affiliation:
Center for Astrophysics | Harvard & Smithsonian, Cambridge, MA 02138, U.S.A.
A. Ames
Affiliation:
Center for Astrophysics | Harvard & Smithsonian, Cambridge, MA 02138, U.S.A.
R. Bruni
Affiliation:
Center for Astrophysics | Harvard & Smithsonian, Cambridge, MA 02138, U.S.A.
H. A. Ambaye
Affiliation:
Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN, U.S.A.
A. Glavic
Affiliation:
Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN, U.S.A.
V. Lauter
Affiliation:
Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN, U.S.A.
D. Engelhaupt
Affiliation:
Dawn Research, Huntsville, AL 35824, U.S.A.
*Corresponding
(Email: bkh@mit.edu)
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Abstract

Neutron scattering is one of the most useful methods of studying the structure of matter, with applications to biomedical, structural, magnetic and energy-related materials. Neutron-scattering instruments are installed around research reactors or accelerator-based neutron sources, and neutron guides are critical components of these facilities. They are neutron-transport optical devices consisting of state-of-the-art mirrors often tens of meters long. Here we demonstrate a novel fabrication method of all-metallic neutron guides and axisymmetric mirrors by electroplating from precision mandrels. The process allows for the fabrication of single-piece all-metal guides of prismatic and axisymmetric shapes. We also demonstrate supermirror guides and axisymmetric focusing supermirrors produced with the same technology. We present the fabrication and tests of the multilayer-coated replicated guides and optic and show that the mandrel is reproduced with high fidelity and reliability. Such supermirror optics will provide game-changing improvements in neutron techniques.

Type
Articles
Copyright
Copyright © Materials Research Society 2020

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Footnotes

*

Currently at Stanford University, Stanford, CA, U.S.A.

Currently at The Paul Scherrer Institute, Villigen, Switzerland

References

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Fabrication and testing of high-performance all-metal neutron guides and axisymmetric mirrors by electrochemical replication
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