Design and operating characteristic of a vacuum furnace for time-of-flight inelastic neutron scattering measurements

Creators: Niedziela, J. L.; Mills, R.; Loguillo, M. J.; Skorpenske, H. D.; Armitage, D.; Smith, H. L.; Lin, J. Y. Y.; Lucas, M. S.; Stone, M. B.; Abernathy, D. L.

Abstract

We present the design and operating characteristics of a vacuum furnace used for inelastic neutron scattering experiments on a time-of-flight chopper spectrometer. The device is an actively water cooled radiant heating furnace capable of performing experiments up to 1873 K. Inelastic neutron scattering studies performed with this furnace include studies of phonon dynamics and metallic liquids. We describe the design, control, characterization, and limitations of the equipment. Further, we provide comparisons of the neutron performance of our device with commercially available options. Finally we consider upgrade paths to improve performance and reliability.

Additional Information

© 2017 AIP Publishing. Received 25 April 2017; accepted 29 September 2017; published online 31 October 2017. We gratefully acknowledge the contributions of other personnel within the Neutron Sciences Directorate at ORNL including Mariano Ruiz-Rodriguez, Michael Caldwell, Rick Allen, and Ryan Morgan. We also thank B. Fultz of the California Institute of Technology for useful discussion on the furnace design and T. R. Watkins of ORNL for a careful reading of this manuscript. The research at Oak Ridge National Laboratory's Spallation Neutron Source was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy.

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