Average neutron time-of-flight instrument response function inferred from single D-T neutron events within a plastic scintillator

Styron, J. D.; Ruiz, C. L.; Hahn, K. D.; Cooper, G. W.; Chandler, G. A.; Jones, B.; McWatters, B. R.; Forrest, C. J.; Vaughan, J.; Torres, J.; Pelka, S.; Smith, J.; Weaver, C.

doi:10.1063/1.5038883

Title: Average neutron time-of-flight instrument response function inferred from single D-T neutron events within a plastic scintillator

Journal Article · Tue Oct 09 00:00:00 EDT 2018 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.5038883· OSTI ID:1477868

Styron, J. D. ^[1]; Ruiz, C. L. ^[2]; Hahn, K. D. ^[2]; Cooper, G. W. ^[1]; Chandler, G. A. ^[2]; Jones, B. ^[2]; McWatters, B. R. ^[2]; Forrest, C. J. ^[3]; Vaughan, J. ^[1]; Torres, J. ^[2];

^[1]; Smith, J. ^[2]; Weaver, C. ^[1]

Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Nuclear Engineering
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Univ. of Rochester, NY (United States). Lab. for Laser Energetics

The apparent ion temperature and neutron-reaction history are important characteristics of a fusion plasma. Extracting these quantities from a measured neutron-time-of-flight signal requires accurate knowledge of the instrument response function (IRF). This paper describes a novel method for obtaining the IRF directly for single DT neutron interactions by utilizing n-alpha coincidence. The t(d,α)n nuclear reaction was produced at Sandia National Laboratories’ Ion Beam Laboratory using a 300 keV Cockcroft-Walton generator to accelerate a 2.5 μA beam of 175 keV D⁺ ions into a stationary ErT₂ target. The average neutron IRF was calculated by taking a time-corrected average of individual neutron events within an EJ-228 plastic scintillator. The scintillator was coupled to two independent photo-multiplier tubes operated in the current mode: a Hamamatsu 5946 mod-5 and a Photek PMT240. Finally, the experimental setup and results will be discussed.

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Research Organization:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0003525

OSTI ID:: 1477868

Alternate ID(s):: OSTI ID: 1476840

Report Number(s):: SAND2018-4843J; 662799

Journal Information:: Review of Scientific Instruments, Vol. 89, Issue 10; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 3 works

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References (22)

Progress in obtaining an absolute calibration of a total deuterium–tritium neutron yield diagnostic based on copper activation Ruiz, C. L.; Chandler, G. A.; Cooper, G. W. Review of Scientific Instruments, Vol. 83, Issue 10 https://doi.org/10.1063/1.4729495	journal	October 2012
Measurement of the Time Dependence of Scintillation Intensity by a Delayed‐Coincidence Method Bollinger, L. M.; Thomas, G. E. Review of Scientific Instruments, Vol. 32, Issue 9, p. 1044-1050 https://doi.org/10.1063/1.1717610	journal	September 1961
Calibration of neutron-yield diagnostics in attenuating and scattering environments Hahn, K. D.; Ruiz, C. L.; Cooper, G. W. Review of Scientific Instruments, Vol. 83, Issue 10 https://doi.org/10.1063/1.4732067	journal	October 2012
Absolute calibration of a total yield indium activation detector for DD and DT neutrons Ruiz, C. L.; Leeper, R. J.; Schmidlapp, F. A. Review of Scientific Instruments, Vol. 63, Issue 10 https://doi.org/10.1063/1.1143541	journal	October 1992
Demonstration of thermonuclear conditions in magnetized liner inertial fusion experimentsa) Gomez, M. R.; Slutz, S. A.; Sefkow, A. B. Physics of Plasmas, Vol. 22, Issue 5 https://doi.org/10.1063/1.4919394	journal	May 2015
Interpretation of neutron time-of-flight signals from current-mode detectors Murphy, T. J.; Chrien, R. E.; Klare, K. A. Review of Scientific Instruments, Vol. 68, Issue 1 https://doi.org/10.1063/1.1147763	journal	January 1997
Characterizing time decay of bibenzyl scintillator using time correlated single photon counting Hatarik, R.; Bernstein, L. A.; Caggiano, J. A. Review of Scientific Instruments, Vol. 83, Issue 10 https://doi.org/10.1063/1.4732178	journal	October 2012
Pulsed-power-driven cylindrical liner implosions of laser preheated fuel magnetized with an axial field Slutz, S. A.; Herrmann, M. C.; Vesey, R. A. Physics of Plasmas, Vol. 17, Issue 5 https://doi.org/10.1063/1.3333505	journal	May 2010
Production of Thermonuclear Neutrons from Deuterium-Filled Capsule Implosions Driven by $Z$ -Pinch Dynamic Hohlraums Ruiz, C. L.; Cooper, G. W.; Slutz, S. A. Physical Review Letters, Vol. 93, Issue 1 https://doi.org/10.1103/physrevlett.93.015001	journal	June 2004
Understanding Fuel Magnetization and Mix Using Secondary Nuclear Reactions in Magneto-Inertial Fusion Schmit, P. F.; Knapp, P. F.; Hansen, S. B. Physical Review Letters, Vol. 113, Issue 15 https://doi.org/10.1103/PhysRevLett.113.155004	journal	October 2014
Experimental Demonstration of Fusion-Relevant Conditions in Magnetized Liner Inertial Fusion Gomez, M. R.; Slutz, S. A.; Sefkow, A. B. Physical Review Letters, Vol. 113, Issue 15 https://doi.org/10.1103/PhysRevLett.113.155003	journal	October 2014
A novel method for modeling the neutron time of flight detector response in current mode to inertial confinement fusion experiments (invited) Nelson, A. J.; Ruiz, C. L.; Cooper, G. W. Review of Scientific Instruments, Vol. 83, Issue 10 https://doi.org/10.1063/1.4742140	journal	October 2012
Analysis of the neutron time-of-flight spectra from inertial confinement fusion experiments Hatarik, R.; Sayre, D. B.; Caggiano, J. A. Journal of Applied Physics, Vol. 118, Issue 18 https://doi.org/10.1063/1.4935455	journal	November 2015
Convergence Properties of the Nelder--Mead Simplex Method in Low Dimensions Lagarias, Jeffrey C.; Reeds, James A.; Wright, Margaret H. SIAM Journal on Optimization, Vol. 9, Issue 1 https://doi.org/10.1137/S1052623496303470	journal	January 1998
Relative light yield and temporal response of a stilbene-doped bibenzyl organic scintillator for neutron detection Brown, J. A.; Goldblum, B. L.; Bernstein, L. A. Journal of Applied Physics, Vol. 115, Issue 19 https://doi.org/10.1063/1.4878238	journal	May 2014
Fusion neutron detector for time-of-flight measurements in z -pinch and plasma focus experiments Klir, D.; Kravarik, J.; Kubes, P. Review of Scientific Instruments, Vol. 82, Issue 3 https://doi.org/10.1063/1.3559548	journal	March 2011
Effects of magnetization on fusion product trapping and secondary neutron spectraa) Knapp, P. F.; Schmit, P. F.; Hansen, S. B. Physics of Plasmas, Vol. 22, Issue 5 https://doi.org/10.1063/1.4920948	journal	May 2015
One dimensional imager of neutrons on the Z machine Ampleford, David J.; Ruiz, Carlos L.; Fittinghoff, David N. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5038118	journal	October 2018
Modeling the one-dimensional imager of neutrons (ODIN) for neutron response functions at the Sandia Z facility Vaughan, J. D.; Ruiz, C. L.; Fittinghoff, D. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5039366	journal	October 2018
Laser fusion ion temperatures determined by neutron time‐of‐flight techniques Lerche, R. A.; Coleman, L. W.; Houghton, J. W. Applied Physics Letters, Vol. 31, Issue 10 https://doi.org/10.1063/1.89509	journal	November 1977
A technique for verifying the input response function of neutron time-of-flight scintillation detectors using cosmic rays Bonura, M. A.; Ruiz, C. L.; Fehl, D. L. Review of Scientific Instruments, Vol. 85, Issue 11 https://doi.org/10.1063/1.4896958	journal	November 2014
Fusion-neutron-yield, activation measurements at the Z accelerator: Design, analysis, and sensitivity Hahn, K. D.; Cooper, G. W.; Ruiz, C. L. Review of Scientific Instruments, Vol. 85, Issue 4 https://doi.org/10.1063/1.4870779	journal	April 2014

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