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Title: Pulse dilation gas Cherenkov detector for ultra-fast gamma reaction history at the National Ignition Facility (invited)

Abstract

The Cherenkov mechanism used in Gas Cherenkov Detectors (GCDs) is exceptionally fast. However, the temporal resolution of GCDs, such as the Gamma Reaction History diagnostic at the National Ignition Facility (NIF), has been limited by the current state-of-the-art photomultiplier tube technology to ∼100 ps. The soon-to-be deployed Pulse Dilation Photomultiplier Tube (PD-PMT) at NIF will allow for temporal resolution comparable to that of the gas cell or ∼10 ps. Enhanced resolution will contribute to the quest for ignition in a crucial way through precision measurements of reaction history and ablator areal density (ρR) history, leading to better constrained models. Features such as onset of alpha heating, shock reverberations, and burn truncation due to dynamically evolving failure modes may become visible for the first time. Test measurements of the PD-PMT at Atomic Weapons Establishment confirmed that design goals have been met. The PD-PMT provides dilation factors of 2 to 40× in 6 increments. The GCD-3 recently deployed at the NIF has been modified for coupling to a PD-PMT and will soon be making ultrafast measurements.

Authors:
ORCiD logo [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [1];  [1];  [1]; ORCiD logo [2];  [2];  [3];  [3]; ORCiD logo [3]; ORCiD logo [3];  [3];  [4];  [4]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [6]; ORCiD logo [7] more »;  [8] « less
  1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
  2. Lawrence Livermore National Laboratory, Livermore, California 94550, USA
  3. Atomic Weapons Establishment, Aldermaston, Berkshire RG7 4PR, United Kingdom
  4. General Atomics, San Diego, California 92186, USA
  5. Misson Support and Test Services, LLC, Los Alamos, New Mexico 87544, USA
  6. Kentech Instruments Ltd., Wallingford, Oxfordshire OX10 8BD, United Kingdom
  7. Photeck Ltd., St Leonards-on-Sea, East Sussex TN38 9NS, United Kingdom
  8. Sydor Technologies, Rochester, New York 14624, USA
Publication Date:
Research Org.:
Nevada National Security Site/Mission Support and Test Services LLC
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1506487
Report Number(s):
DOE/NV/03624-0206
Journal ID: ISSN 0034-6748
DOE Contract Number:  
AC52-06NA25396; DE-NA0003624
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 89; Journal Issue: 10; Journal ID: ISSN 0034-6748
Publisher:
AIP Publishing, 1305 Walt Whitman Road, Suite 300, Melville, NY 11747
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 47 OTHER INSTRUMENTATION; gas Cherenkov detector, pulse-dilation photomultiplier tube, National Ignition Facility, gamma reaction history

Citation Formats

Geppert-Kleinrath, H., Herrmann, H. W., Kim, Y. H., Zylstra, A. B., Meaney, K., Lopez, F. E., Pederson, B. J., Carrera, J., Khater, H., Horsfield, C. J., Rubery, M. S., Gales, S., Leatherland, A., Meadowcroft, A., Hilsabeck, T., Kilkenny, J. D., Malone, R. M., Hares, J. D., Dymoke-Bradshaw, A. K. L., Milnes, J., and McFee, C. Pulse dilation gas Cherenkov detector for ultra-fast gamma reaction history at the National Ignition Facility (invited). United States: N. p., 2018. Web. doi:10.1063/1.5039377.
Geppert-Kleinrath, H., Herrmann, H. W., Kim, Y. H., Zylstra, A. B., Meaney, K., Lopez, F. E., Pederson, B. J., Carrera, J., Khater, H., Horsfield, C. J., Rubery, M. S., Gales, S., Leatherland, A., Meadowcroft, A., Hilsabeck, T., Kilkenny, J. D., Malone, R. M., Hares, J. D., Dymoke-Bradshaw, A. K. L., Milnes, J., & McFee, C. Pulse dilation gas Cherenkov detector for ultra-fast gamma reaction history at the National Ignition Facility (invited). United States. doi:10.1063/1.5039377.
Geppert-Kleinrath, H., Herrmann, H. W., Kim, Y. H., Zylstra, A. B., Meaney, K., Lopez, F. E., Pederson, B. J., Carrera, J., Khater, H., Horsfield, C. J., Rubery, M. S., Gales, S., Leatherland, A., Meadowcroft, A., Hilsabeck, T., Kilkenny, J. D., Malone, R. M., Hares, J. D., Dymoke-Bradshaw, A. K. L., Milnes, J., and McFee, C. Mon . "Pulse dilation gas Cherenkov detector for ultra-fast gamma reaction history at the National Ignition Facility (invited)". United States. doi:10.1063/1.5039377.
@article{osti_1506487,
title = {Pulse dilation gas Cherenkov detector for ultra-fast gamma reaction history at the National Ignition Facility (invited)},
author = {Geppert-Kleinrath, H. and Herrmann, H. W. and Kim, Y. H. and Zylstra, A. B. and Meaney, K. and Lopez, F. E. and Pederson, B. J. and Carrera, J. and Khater, H. and Horsfield, C. J. and Rubery, M. S. and Gales, S. and Leatherland, A. and Meadowcroft, A. and Hilsabeck, T. and Kilkenny, J. D. and Malone, R. M. and Hares, J. D. and Dymoke-Bradshaw, A. K. L. and Milnes, J. and McFee, C.},
abstractNote = {The Cherenkov mechanism used in Gas Cherenkov Detectors (GCDs) is exceptionally fast. However, the temporal resolution of GCDs, such as the Gamma Reaction History diagnostic at the National Ignition Facility (NIF), has been limited by the current state-of-the-art photomultiplier tube technology to ∼100 ps. The soon-to-be deployed Pulse Dilation Photomultiplier Tube (PD-PMT) at NIF will allow for temporal resolution comparable to that of the gas cell or ∼10 ps. Enhanced resolution will contribute to the quest for ignition in a crucial way through precision measurements of reaction history and ablator areal density (ρR) history, leading to better constrained models. Features such as onset of alpha heating, shock reverberations, and burn truncation due to dynamically evolving failure modes may become visible for the first time. Test measurements of the PD-PMT at Atomic Weapons Establishment confirmed that design goals have been met. The PD-PMT provides dilation factors of 2 to 40× in 6 increments. The GCD-3 recently deployed at the NIF has been modified for coupling to a PD-PMT and will soon be making ultrafast measurements.},
doi = {10.1063/1.5039377},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 10,
volume = 89,
place = {United States},
year = {2018},
month = {10}
}