Note: Detector collimators for the nanoscale ordered materials diffractometer instrument at the Spallation Neutron Source

Tamalonis, A.; Weber, J. K.  R.; Neuefeind, J. C.; Carruth, J.; Skinner, L. B.; Alderman, O. L.  G.; Benmore, C. J.

doi:10.1063/1.4930279

Title: Note: Detector collimators for the nanoscale ordered materials diffractometer instrument at the Spallation Neutron Source

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Abstract

We constructed and tested five neutron collimator designs using the nanoscale ordered materials diffractometer (NOMAD) instrument. Collimators were made from High Density PolyEthylene (HDPE) or 5% borated HDPE. In all cases, collimators improved the signal to background ratio and reduced detection of secondary scattering. Moreover, in the Q-range 10-20 Å^-1, signal to background ratio improved by factors of approximately 1.6 and 2.0 for 50 and 100 mm deep collimators, respectively. In the Q-range 40-50 Å^-1, the improvement factors were 1.8 and 2.7. Secondary scattering as measured at Q similar to 9.5 Å^-1 was significantly decreased when the collimators were installed.

Authors:

Tamalonis, A. ^[1];

^[2]; Neuefeind, J. C. ^[3];

^[3];

^[4]; Alderman, O. L. G. ^[2]; Benmore, C. J. ^[5]

Materials Development, Inc., Arlington Heights, IL (United States)
Materials Development, Inc., Arlington Heights, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Materials Development, Inc., Arlington Heights, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Stony Brook Univ., NY (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)

Publication Date:: Wed Sep 09 00:00:00 EDT 2015

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1261471

Grant/Contract Number:: AC05-00OR22725; SC0004684

Resource Type:: Accepted Manuscript

Journal Name:: Review of Scientific Instruments

Additional Journal Information:: Journal Volume: 86; Journal Issue: 9; Journal ID: ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats


                    Tamalonis, A., Weber, J. K.  R., Neuefeind, J. C., Carruth, J., Skinner, L. B., Alderman, O. L.  G., and Benmore, C. J. Note: Detector collimators for the nanoscale ordered materials diffractometer instrument at the Spallation Neutron Source.  United States: N. p., 2015. 
Web.  doi:10.1063/1.4930279.

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                    Tamalonis, A., Weber, J. K.  R., Neuefeind, J. C., Carruth, J., Skinner, L. B., Alderman, O. L.  G., & Benmore, C. J. Note: Detector collimators for the nanoscale ordered materials diffractometer instrument at the Spallation Neutron Source.  United States.  https://doi.org/10.1063/1.4930279

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                    Tamalonis, A., Weber, J. K.  R., Neuefeind, J. C., Carruth, J., Skinner, L. B., Alderman, O. L.  G., and Benmore, C. J. Wed .  
"Note: Detector collimators for the nanoscale ordered materials diffractometer instrument at the Spallation Neutron Source".  United States.  https://doi.org/10.1063/1.4930279.  https://www.osti.gov/servlets/purl/1261471.

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@article{osti_1261471,

  title        = {Note: Detector collimators for the nanoscale ordered materials diffractometer instrument at the Spallation Neutron Source},

  author       = {Tamalonis, A. and Weber, J. K.  R. and Neuefeind, J. C. and Carruth, J. and Skinner, L. B. and Alderman, O. L.  G. and Benmore, C. J.},

  abstractNote = {We constructed and tested five neutron collimator designs using the nanoscale ordered materials diffractometer (NOMAD) instrument. Collimators were made from High Density PolyEthylene (HDPE) or 5% borated HDPE. In all cases, collimators improved the signal to background ratio and reduced detection of secondary scattering. Moreover, in the Q-range 10-20 Å-1, signal to background ratio improved by factors of approximately 1.6 and 2.0 for 50 and 100 mm deep collimators, respectively. In the Q-range 40-50 Å-1, the improvement factors were 1.8 and 2.7. Secondary scattering as measured at Q similar to 9.5 Å-1 was significantly decreased when the collimators were installed.},

  doi          = {10.1063/1.4930279},

  journal      = {Review of Scientific Instruments},

  number       = 9,

  volume       = 86,

  place        = {United States},

  year         = {Wed Sep 09 00:00:00 EDT 2015},

  month        = {Wed Sep 09 00:00:00 EDT 2015}

}

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