Proof-of-concept of a neutron time-of-flight ellipsoidal detector

Jeet, J.; Eckart, M.; Gjemso, J.; Hahn, K.; Hartouni, E. P.; Kerr, S.; Mariscal, E.; Moore, A. S.; Rubery, M.; Schlossberg, D. J.

doi:10.1063/5.0043829

Proof-of-concept of a neutron time-of-flight ellipsoidal detector

Journal Article · Mon Apr 26 00:00:00 EDT 2021 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/5.0043829· OSTI ID:1780481

; Eckart, M.; Gjemso, J.; ; ; Kerr, S.; ; ; Rubery, M.;

The time-resolved measurement of neutrons emitted from nuclear implosions at inertial confinement fusion facilities is used to characterize the fusing plasma. Several significant quantities are routinely measured by neutron time-of-flight (nToF) detectors in these experiments. Current nToF detectors use scintillators as well as solid-state Cherenkov radiators. The latter has an inherently faster time response and can provide a co-registered γ-ray measurement as well as improved precision in the bulk hot-spot velocity. This work discusses a nToF ellipsoidal detector that also utilizes a solid-state Cherenkov radiator. The detector has the potential to achieve a fast instrument response function allowing for characterization of the γ-ray burn history as well as the ability to field the detector closer to the fusion source. Proof-of-concept testing of the nToF ellipsoidal detector has been conducted at the National Ignition Facility using commercial optics. A time-resolved neutron signal has been measured from the diagnostic. Preliminary simulations corroborate the results.

View Accepted Manuscript (Publisher)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1780481

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 4 Vol. 92; ISSN 0034-6748

Publisher:: American Institute of PhysicsCopyright Statement

Country of Publication:: United States

Language:: English

References (20)

Refractive index of silica aerogel: Uniformity and dispersion law Bellunato, T.; Calvi, M.; Matteuzzi, C. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 595, Issue 1 https://doi.org/10.1016/j.nima.2008.07.072	journal	September 2008
Optical properties of RICH detectors Va’vra, J. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 766 https://doi.org/10.1016/j.nima.2014.04.081	journal	December 2014
Recent developments in Geant4 Allison, J.; Amako, K.; Apostolakis, J. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 835 https://doi.org/10.1016/j.nima.2016.06.125	journal	November 2016
Observation of high-energy deuterium–tritium fusion gamma rays using gas Cherenkov detectors Mack, J. M.; Berggren, R. R.; Caldwell, S. E. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 513, Issue 3 https://doi.org/10.1016/s0168-9002(03)01930-2	journal	November 2003
Measurement of areal density in the ablators of inertial-confinement-fusion capsules via detection of ablator (n, n′γ) gamma-ray emission Hoffman, N. M.; Herrmann, H. W.; Kim, Y. H. Physics of Plasmas, Vol. 20, Issue 4 https://doi.org/10.1063/1.4799799	journal	April 2013
The effect of turbulent kinetic energy on inferred ion temperature from neutron spectra Murphy, T. J. Physics of Plasmas, Vol. 21, Issue 7 https://doi.org/10.1063/1.4885342	journal	July 2014
Extended performance gas Cherenkov detector for gamma-ray detection in high-energy density experiments Herrmann, H. W.; Kim, Y. H.; Young, C. S. Review of Scientific Instruments, Vol. 85, Issue 11 https://doi.org/10.1063/1.4892553	journal	November 2014
Aerogel Cherenkov detector for characterizing the intense flash x-ray source, Cygnus, spectrum Kim, Y.; Herrmann, H. W.; McEvoy, A. M. Review of Scientific Instruments, Vol. 87, Issue 11 https://doi.org/10.1063/1.4960541	journal	August 2016
Impact of temperature-velocity distribution on fusion neutron peak shape Munro, D. H.; Field, J. E.; Hatarik, R. Physics of Plasmas, Vol. 24, Issue 5 https://doi.org/10.1063/1.4976857	journal	May 2017
Effects of residual kinetic energy on yield degradation and ion temperature asymmetries in inertial confinement fusion implosions Woo, K. M.; Betti, R.; Shvarts, D. Physics of Plasmas, Vol. 25, Issue 5 https://doi.org/10.1063/1.5026706	journal	May 2018
Uncertainty analysis of response functions and γ-backgrounds on T _ion and t ₀ measurements from Cherenkov neutron detectors at the National Ignition Facility (NIF) Hartouni, E. P.; Beeman, B.; Eckart, M. J. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5038816	journal	October 2018
A fused silica Cherenkov radiator for high precision time-of-flight measurement of DT γ and neutron spectra (invited) Moore, A. S.; Schlossberg, D. J.; Hartouni, E. P. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5039322	journal	October 2018
Ab initio response functions for Cherenkov-based neutron detectors Schlossberg, D. J.; Moore, A. S.; Beeman, B. V. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5039399	journal	October 2018
Improved inertial confinement fusion gamma reaction history ¹² C gamma-ray signal by direct subtraction Meaney, K. D.; Kim, Y. H.; Herrmann, H. W. Review of Scientific Instruments, Vol. 90, Issue 11 https://doi.org/10.1063/1.5092501	journal	November 2019
Neutron backscatter edge: A measure of the hydrodynamic properties of the dense DT fuel at stagnation in ICF experiments Crilly, A. J.; Appelbe, B. D.; Mannion, O. M. Physics of Plasmas, Vol. 27, Issue 1 https://doi.org/10.1063/1.5128830	journal	January 2020
Solid Cherenkov detector for studying nucleosynthesis in inertial confinement fusion Springstead, M. P.; Zylstra, A. B.; Kim, Y. Review of Scientific Instruments, Vol. 91, Issue 7 https://doi.org/10.1063/5.0002874	journal	July 2020
Interpreting inertial fusion neutron spectra Munro, David H. Nuclear Fusion, Vol. 56, Issue 3 https://doi.org/10.1088/0029-5515/56/3/036001	journal	February 2016
Contribution to the Theory of the Cherenkov Effect Beck, Guido Physical Review, Vol. 74, Issue 7 https://doi.org/10.1103/physrev.74.795	journal	October 1948
Astrophysical S-factor of T(4He, γ)7Li reaction at E cm = 15.7 keV Bystritsky, V. M.; Dudkin, G. N.; Emets, E. G. Physics of Particles and Nuclei Letters, Vol. 14, Issue 4 https://doi.org/10.1134/s1547477117040057	journal	July 2017
Evaluation of Reconstruction Methods for Time-Resolved Spectroscopy of Short-Pulsed Neutron Sources Tiseanu, Ion; Craciunescu, Teddy Nuclear Science and Engineering, Vol. 122, Issue 3 https://doi.org/10.13182/nse96-a24173	journal	March 1996

Similar Records

A fused silica Cherenkov radiator for high precision time-of-flight measurement of DT γ and neutron spectra (invited)

Journal Article · Mon Oct 08 20:00:00 EDT 2018 · Review of Scientific Instruments · OSTI ID:1545509

A novel photomultiplier tube neutron time-of-flight detector

Journal Article · Thu Jan 21 19:00:00 EST 2021 · Review of Scientific Instruments · OSTI ID:1763028

Proof-of-concept of a neutron time-of-flight ellipsoidal detector

Citation Formats

References (20)

Similar Records

Related Subjects