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Title: A novel method to recover DD fusion proton CR-39 data corrupted by fast ablator ions at OMEGA and the National Ignition Facility

Abstract

CR-39 detectors are used routinely in inertial confinement fusion (ICF) experiments as a part of nuclear diagnostics. CR-39 is filtered to stop fast ablator ions which have been accelerated from an ICF implosion due to electric fields caused by laser-plasma interactions. In some experiments, the filtering is insufficient to block these ions and the fusion-product signal tracks are lost in the large background of accelerated ion tracks. A technique for recovering signal in these scenarios has been developed, tested, and implemented successfully. The technique involves removing material from the surface of the CR-39 to a depth beyond the endpoint of the ablator ion tracks. The technique preserves signal magnitude (yield) as well as structure in radiograph images. The technique is effective when signal particle range is at least 10 μm deeper than the necessary bulk material removal.

Authors:
ORCiD logo [1];  [1];  [1];  [1];  [1];  [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1];  [2];  [2];  [2];  [2];  [2];  [2]; ORCiD logo [2]; ORCiD logo [3];  [4];  [4]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center, High Energy Density Physics Div.
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1312843
Grant/Contract Number:  
NA0002949; NA0002726; NA0001857
Resource Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 11; Conference: 21. Topical Conference on High Temperature Plasma Diagnostics (HTPD 2016), Madison, WI (United States), 5-9 Jun 2016; 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; protons; etching; radiography; inertial confinement; tantalum

Citation Formats

Sutcliffe, G. D., Milanese, L. M., Orozco, D., Lahmann, B., Gatu Johnson, M., Séguin, F. H., Sio, H., Frenje, J. A., Li, C. K., Petrasso, R. D., Park, H. -S., Rygg, J. R., Casey, D. T., Bionta, R., Turnbull, D. P., Huntington, C. M., Ross, J. S., Zylstra, A. B., Rosenberg, M. J., and Glebov, V. Yu. A novel method to recover DD fusion proton CR-39 data corrupted by fast ablator ions at OMEGA and the National Ignition Facility. United States: N. p., 2016. Web. doi:10.1063/1.4960072.
Sutcliffe, G. D., Milanese, L. M., Orozco, D., Lahmann, B., Gatu Johnson, M., Séguin, F. H., Sio, H., Frenje, J. A., Li, C. K., Petrasso, R. D., Park, H. -S., Rygg, J. R., Casey, D. T., Bionta, R., Turnbull, D. P., Huntington, C. M., Ross, J. S., Zylstra, A. B., Rosenberg, M. J., & Glebov, V. Yu. A novel method to recover DD fusion proton CR-39 data corrupted by fast ablator ions at OMEGA and the National Ignition Facility. United States. doi:10.1063/1.4960072.
Sutcliffe, G. D., Milanese, L. M., Orozco, D., Lahmann, B., Gatu Johnson, M., Séguin, F. H., Sio, H., Frenje, J. A., Li, C. K., Petrasso, R. D., Park, H. -S., Rygg, J. R., Casey, D. T., Bionta, R., Turnbull, D. P., Huntington, C. M., Ross, J. S., Zylstra, A. B., Rosenberg, M. J., and Glebov, V. Yu. Fri . "A novel method to recover DD fusion proton CR-39 data corrupted by fast ablator ions at OMEGA and the National Ignition Facility". United States. doi:10.1063/1.4960072. https://www.osti.gov/servlets/purl/1312843.
@article{osti_1312843,
title = {A novel method to recover DD fusion proton CR-39 data corrupted by fast ablator ions at OMEGA and the National Ignition Facility},
author = {Sutcliffe, G. D. and Milanese, L. M. and Orozco, D. and Lahmann, B. and Gatu Johnson, M. and Séguin, F. H. and Sio, H. and Frenje, J. A. and Li, C. K. and Petrasso, R. D. and Park, H. -S. and Rygg, J. R. and Casey, D. T. and Bionta, R. and Turnbull, D. P. and Huntington, C. M. and Ross, J. S. and Zylstra, A. B. and Rosenberg, M. J. and Glebov, V. Yu.},
abstractNote = {CR-39 detectors are used routinely in inertial confinement fusion (ICF) experiments as a part of nuclear diagnostics. CR-39 is filtered to stop fast ablator ions which have been accelerated from an ICF implosion due to electric fields caused by laser-plasma interactions. In some experiments, the filtering is insufficient to block these ions and the fusion-product signal tracks are lost in the large background of accelerated ion tracks. A technique for recovering signal in these scenarios has been developed, tested, and implemented successfully. The technique involves removing material from the surface of the CR-39 to a depth beyond the endpoint of the ablator ion tracks. The technique preserves signal magnitude (yield) as well as structure in radiograph images. The technique is effective when signal particle range is at least 10 μm deeper than the necessary bulk material removal.},
doi = {10.1063/1.4960072},
journal = {Review of Scientific Instruments},
number = 11,
volume = 87,
place = {United States},
year = {2016},
month = {8}
}

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