Proton pinhole imaging on the National Ignition Facility

Zylstra, Alex B.; Park, H. -S.; Ross, J. S.; Fiuza, F.; Frenje, J. A.; Higginson, D. P.; Huntington, C.; Li, C. K.; Petrasso, R. D.; Pollock, B.; Remington, B.; Rinderknecht, H. G.; Ryutov, D.; Seguin, F. H.; Turnbull, D.; Wilks, S. C.

doi:10.1063/1.4959782

Title: Proton pinhole imaging on the National Ignition Facility

Journal Article · Fri Jul 29 00:00:00 EDT 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4959782· OSTI ID:1341866

^[1]; Park, H. -S. ^[2]; Ross, J. S. ^[2]; Fiuza, F. ^[3];

^[4];

^[2];

^[2]; Li, C. K. ^[4];

^[4]; Pollock, B. ^[2];

^[2];

^[2]; Ryutov, D. ^[2]; Seguin, F. H. ^[4]; Turnbull, D. ^[2]; Wilks, S. C. ^[2]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

Here, pinhole imaging of large (mm scale) carbon-deuterium (CD) plasmas by proton self-emission has been used for the first time to study the microphysics of shock formation, which is of astrophysical relevance. The 3 MeV deuterium-deuterium (DD) fusion proton self-emission from these plasmas is imaged using a novel pinhole imaging system, with up to five different 1 mm diameter pinholes positioned 25 cm from target-chamber center. CR39 is used as the detector medium, positioned at 100 cm distance from the pinhole for a magnification of 4×. A Wiener deconvolution algorithm is numerically demonstrated and used to interpret the images. When the spatial morphology is known, this algorithm accurately reproduces the size of features larger than about half the pinhole diameter. For these astrophysical plasma experiments on the National Ignition Facility, this provides a strong constraint on simulation modeling of the experiment.

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Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Fusion Energy Sciences (FES); National Science Foundation (NSF); USDOE Laboratory Directed Research and Development (LDRD) Program

Grant/Contract Number:: AC52-06NA25396; AC52-07NA27344; NA0001857; FC52-08NA28752; FG02-88ER40387; NA0001837; 1122374; AC02-76SF00515

OSTI ID:: 1341866

Alternate ID(s):: OSTI ID: 1360158; OSTI ID: 1887030

Report Number(s):: LA-UR-16-23558; LLNL-JRNL-839650; RSINAK; TRN: US1701753

Journal Information:: Review of Scientific Instruments, Vol. 87, Issue 11; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 3 works

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References (16)

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