A compact neutron spectrometer for characterizing inertial confinement fusion implosions at OMEGA and the NIF
Abstract
A compact spectrometer for measurements of the primary deuterium-tritium neutron spectrum has been designed and implemented on the OMEGA laser facility. This instrument uses the recoil spectrometry technique, where neutrons produced in an implosion elastically scatter protons in a plastic foil, which are subsequently detected by a proton spectrometer. This diagnostic is capable of measuring the yield to ~±10% accuracy, and mean neutron energy to ~±50 keV precision. As these compact spectrometers can be readily placed at several locations around an implosion, effects of residual fuel bulk flows during burn can be measured. Future improvements to reduce the neutron energy uncertainty to ±15-20 keV are discussed, which will enable measurements of fuel velocities to an accuracy of ~±25-40 km/s.
- Authors:
-
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Univ. of Rochester, Rochester, NY (United States)
- Publication Date:
- Research Org.:
- Massachusetts Institute of Technology (MIT), Cambridge, MA (United States). High Energy Density Physics Division, Plasma Science and Fusion Center.
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1172498
- Grant/Contract Number:
- NA0002035; NA0001857
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Review of Scientific Instruments
- Additional Journal Information:
- Journal Volume: 85; Journal Issue: 6; Journal ID: ISSN 0034-6748
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; neutrons; protons; velocity measurement; neutron spectroscopy; charged particle spectrometers
Citation Formats
Zylstra, A. B., Gatu Johnson, M., Frenje, J. A., Séguin, F. H., Rinderknecht, H. G., Rosenberg, M. J., Sio, H. W., Li, C. K., Petrasso, R. D., McCluskey, M., Mastrosimone, D., Glebov, V. Yu., Forrest, C., Stoeckl, C., and Sangster, T. C. A compact neutron spectrometer for characterizing inertial confinement fusion implosions at OMEGA and the NIF. United States: N. p., 2014.
Web. doi:10.1063/1.4880203.
Zylstra, A. B., Gatu Johnson, M., Frenje, J. A., Séguin, F. H., Rinderknecht, H. G., Rosenberg, M. J., Sio, H. W., Li, C. K., Petrasso, R. D., McCluskey, M., Mastrosimone, D., Glebov, V. Yu., Forrest, C., Stoeckl, C., & Sangster, T. C. A compact neutron spectrometer for characterizing inertial confinement fusion implosions at OMEGA and the NIF. United States. https://doi.org/10.1063/1.4880203
Zylstra, A. B., Gatu Johnson, M., Frenje, J. A., Séguin, F. H., Rinderknecht, H. G., Rosenberg, M. J., Sio, H. W., Li, C. K., Petrasso, R. D., McCluskey, M., Mastrosimone, D., Glebov, V. Yu., Forrest, C., Stoeckl, C., and Sangster, T. C. 2014.
"A compact neutron spectrometer for characterizing inertial confinement fusion implosions at OMEGA and the NIF". United States. https://doi.org/10.1063/1.4880203. https://www.osti.gov/servlets/purl/1172498.
@article{osti_1172498,
title = {A compact neutron spectrometer for characterizing inertial confinement fusion implosions at OMEGA and the NIF},
author = {Zylstra, A. B. and Gatu Johnson, M. and Frenje, J. A. and Séguin, F. H. and Rinderknecht, H. G. and Rosenberg, M. J. and Sio, H. W. and Li, C. K. and Petrasso, R. D. and McCluskey, M. and Mastrosimone, D. and Glebov, V. Yu. and Forrest, C. and Stoeckl, C. and Sangster, T. C.},
abstractNote = {A compact spectrometer for measurements of the primary deuterium-tritium neutron spectrum has been designed and implemented on the OMEGA laser facility. This instrument uses the recoil spectrometry technique, where neutrons produced in an implosion elastically scatter protons in a plastic foil, which are subsequently detected by a proton spectrometer. This diagnostic is capable of measuring the yield to ~±10% accuracy, and mean neutron energy to ~±50 keV precision. As these compact spectrometers can be readily placed at several locations around an implosion, effects of residual fuel bulk flows during burn can be measured. Future improvements to reduce the neutron energy uncertainty to ±15-20 keV are discussed, which will enable measurements of fuel velocities to an accuracy of ~±25-40 km/s.},
doi = {10.1063/1.4880203},
url = {https://www.osti.gov/biblio/1172498},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 6,
volume = 85,
place = {United States},
year = {Wed Jun 04 00:00:00 EDT 2014},
month = {Wed Jun 04 00:00:00 EDT 2014}
}
Web of Science
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Works referencing / citing this record:
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