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Title: eHXI: A permanently installed, hard x-ray imager for the National Ignition Facility

Abstract

We have designed and built a multi-pinhole imaging system for high energy x-rays (≥ 50 keV) that is permanently installed in the equatorial plane outside of the target chamber at the National Ignition Facility (NIF). It records absolutely-calibrated, time-integrated x-ray images with the same line-of-sight as the multi-channel, spatially integrating hard x-ray detector FFLEX [McDonald et al., Rev. Sci. Instrum. 75 (2004) 3753], having a side view of indirect-drive inertial confinement fusion (ICF) implosion targets. The equatorial hard x-ray imager (eHXI) has recorded images on the majority of ICF implosion experiments since May 2011. Lastly, eHXI provides valuable information on hot electron distribution in hohlraum experiments, target alignment, potential hohlraum drive asymmetries and serves as a long term reference for the FFLEX diagnostics.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [1];  [3];  [1];  [1];  [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of Rochester, Rochester, NY (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1260501
Report Number(s):
LLNL-JRNL-685858
Journal ID: ISSN 1748-0221
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Instrumentation
Additional Journal Information:
Journal Volume: 11; Journal Issue: 06; Journal ID: ISSN 1748-0221
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ICF; imaging; hard x-rays

Citation Formats

Doppner, T., Bachmann, B., Albert, F., Bell, P., Burns, S., Celeste, J., Chow, R., Divol, L., Dewald, E. L., Hohenberger, M., Izumi, N., LaCaille, G., Landen, O. L., Palmer, N., Park, H. -S., Thomas, C. A., and Huntington, C.. eHXI: A permanently installed, hard x-ray imager for the National Ignition Facility. United States: N. p., 2016. Web. https://doi.org/10.1088/1748-0221/11/06/P06010.
Doppner, T., Bachmann, B., Albert, F., Bell, P., Burns, S., Celeste, J., Chow, R., Divol, L., Dewald, E. L., Hohenberger, M., Izumi, N., LaCaille, G., Landen, O. L., Palmer, N., Park, H. -S., Thomas, C. A., & Huntington, C.. eHXI: A permanently installed, hard x-ray imager for the National Ignition Facility. United States. https://doi.org/10.1088/1748-0221/11/06/P06010
Doppner, T., Bachmann, B., Albert, F., Bell, P., Burns, S., Celeste, J., Chow, R., Divol, L., Dewald, E. L., Hohenberger, M., Izumi, N., LaCaille, G., Landen, O. L., Palmer, N., Park, H. -S., Thomas, C. A., and Huntington, C.. Tue . "eHXI: A permanently installed, hard x-ray imager for the National Ignition Facility". United States. https://doi.org/10.1088/1748-0221/11/06/P06010. https://www.osti.gov/servlets/purl/1260501.
@article{osti_1260501,
title = {eHXI: A permanently installed, hard x-ray imager for the National Ignition Facility},
author = {Doppner, T. and Bachmann, B. and Albert, F. and Bell, P. and Burns, S. and Celeste, J. and Chow, R. and Divol, L. and Dewald, E. L. and Hohenberger, M. and Izumi, N. and LaCaille, G. and Landen, O. L. and Palmer, N. and Park, H. -S. and Thomas, C. A. and Huntington, C.},
abstractNote = {We have designed and built a multi-pinhole imaging system for high energy x-rays (≥ 50 keV) that is permanently installed in the equatorial plane outside of the target chamber at the National Ignition Facility (NIF). It records absolutely-calibrated, time-integrated x-ray images with the same line-of-sight as the multi-channel, spatially integrating hard x-ray detector FFLEX [McDonald et al., Rev. Sci. Instrum. 75 (2004) 3753], having a side view of indirect-drive inertial confinement fusion (ICF) implosion targets. The equatorial hard x-ray imager (eHXI) has recorded images on the majority of ICF implosion experiments since May 2011. Lastly, eHXI provides valuable information on hot electron distribution in hohlraum experiments, target alignment, potential hohlraum drive asymmetries and serves as a long term reference for the FFLEX diagnostics.},
doi = {10.1088/1748-0221/11/06/P06010},
journal = {Journal of Instrumentation},
number = 06,
volume = 11,
place = {United States},
year = {2016},
month = {6}
}

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    Works referencing / citing this record:

    Maintaining low-mode symmetry control with extended pulse shapes for lower-adiabat Bigfoot implosions on the National Ignition Facility
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