Novel data analysis method for obtaining better performance from a complex 3D-printed collimator

Fahima F. Islam; Bianca Haberl; Jiao Y.Y. Lin; David C. Anderson; Jamie J. Molaison; Garrett E. Granroth

doi:10.1016/j.nima.2021.165646

Novel data analysis method for obtaining better performance from a complex 3D-printed collimator

Fahima F. Islam, Bianca Haberl, Jiao Y.Y. Lin, David C. Anderson, Jamie J. Molaison, Garrett E. Granroth

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Additively manufactured scattered beam collimators are increasingly being employed to boost the sample to cell peak signal ratio in high pressure neutron diffraction studies because of manufacturing versatility and performance improvements. We study how the measured diffraction pattern is affected by the presence of a collimator downstream of the sample, and develop a novel protocol that provides more effective background rejection. This protocol takes into account critical performance-determinants that were identified in this study, namely: (i) effectively identifying the collimator pattern on the detector; (ii) understanding the dependence of this pattern on sample and cell composition; and (iii) accurately identifying and differentiating the different regions of the pattern on the detector based on the dependency of the cell or sample and finally (iv) resolving the intensities at regions of the detector where neutrons scattered from the sample are preferentially represented, in order to boost the sample to cell peak signal ratio. Application of this novel analysis protocol is shown to increase the collimator performance over the traditional method.

Original language	English
Article number	165646
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	1014
DOIs	https://doi.org/10.1016/j.nima.2021.165646
State	Published - Oct 21 2021

Funding

The authors thank J. M. Borreguero Calvo and A. T. Savici (both ORNL) for fruitful discussions. A portion of this research used resources at the SNAP beamline of the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. This work is supported by Oak Ridge National Laboratory (ORNL), USA, Laboratory Directed Research and Development, USA funds. The authors thank J. M. Borreguero Calvo and A. T. Savici (both ORNL) for fruitful discussions. A portion of this research used resources at the SNAP beamline of the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. This work is supported by Oak Ridge National Laboratory (ORNL), USA , Laboratory Directed Research and Development, USA funds.

Keywords

3D printing
Complex sample environment
Neutron diffraction
Scattered collimator

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10.1016/j.nima.2021.165646

Cite this

Islam, F. F., Haberl, B., Lin, J. Y. Y., Anderson, D. C., Molaison, J. J., & Granroth, G. E. (2021). Novel data analysis method for obtaining better performance from a complex 3D-printed collimator. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1014, Article 165646. https://doi.org/10.1016/j.nima.2021.165646

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title = "Novel data analysis method for obtaining better performance from a complex 3D-printed collimator",

abstract = "Additively manufactured scattered beam collimators are increasingly being employed to boost the sample to cell peak signal ratio in high pressure neutron diffraction studies because of manufacturing versatility and performance improvements. We study how the measured diffraction pattern is affected by the presence of a collimator downstream of the sample, and develop a novel protocol that provides more effective background rejection. This protocol takes into account critical performance-determinants that were identified in this study, namely: (i) effectively identifying the collimator pattern on the detector; (ii) understanding the dependence of this pattern on sample and cell composition; and (iii) accurately identifying and differentiating the different regions of the pattern on the detector based on the dependency of the cell or sample and finally (iv) resolving the intensities at regions of the detector where neutrons scattered from the sample are preferentially represented, in order to boost the sample to cell peak signal ratio. Application of this novel analysis protocol is shown to increase the collimator performance over the traditional method.",

keywords = "3D printing, Complex sample environment, Neutron diffraction, Scattered collimator",

author = "Islam, {Fahima F.} and Bianca Haberl and Lin, {Jiao Y.Y.} and Anderson, {David C.} and Molaison, {Jamie J.} and Granroth, {Garrett E.}",

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Islam, FF , Haberl, B, Lin, JYY, Anderson, DC , Molaison, JJ & Granroth, GE 2021, 'Novel data analysis method for obtaining better performance from a complex 3D-printed collimator', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 1014, 165646. https://doi.org/10.1016/j.nima.2021.165646

Novel data analysis method for obtaining better performance from a complex 3D-printed collimator. / Islam, Fahima F.; Haberl, Bianca; Lin, Jiao Y.Y. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 1014, 165646, 21.10.2021.

Research output: Contribution to journal › Article › peer-review

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AU - Islam, Fahima F.

AU - Haberl, Bianca

AU - Lin, Jiao Y.Y.

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AU - Molaison, Jamie J.

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Novel data analysis method for obtaining better performance from a complex 3D-printed collimator

Abstract

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Keywords

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Novel data analysis method for obtaining better performance from a complex 3D-printed collimator

Abstract

Funding

Keywords

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Files describing work on alternating blade 3D printed collimator

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