Progress on converting a NIF quad to eight, petawatt beams for advanced radiography

Crane, John K.; Tietbohl, G.; Arnold, P.; Bliss, Erlan S.; Boley, C. D.; Britten, G; Brunton, G; Clark, Wendall J.; Dawson, Jay W.; Fochs, S.; Hackel, Richard P.; Haefner, C.; Halpin, John M.; Heebner, John E.; Henesian, Mark A.; Hermann, M. R.; Hernandéz, Juan David Cardona; Kanz, V. Keith; McHale, B.; McLeod, J. B.; Nguyễn, Hoàng Tùng; Phan, H; Rushford, M. C.; Shaw, Brian; Shverdin, M. Y.; Sigurdsson, R.; Speck, Rainer; Stolz, Christopher J.; Trummer, D.; Wolfe, Justin; Wong, Jen Nan; Siders, G C; Barty, C. P. J.

doi:10.1088/1742-6596/244/3/032003

Cited by 70 publications

(22 citation statements)

References 6 publications

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“…Such a laser would produce about 100 times more positrons and 10 times more electrons than current facilities, and these higher yields would be comparable to those needed for laboratory astrophysics experiments. And in fact, a new generation of intense high energy lasers, including NIF ARC, 43 Gekko LFEX, 44 and LMJ PETAL, 45 is being constructed to deliver about 10 kJ at 1-10 ps pulse durations. These are expected to be available for experiments in the next few years.…”

Section: Future Researchmentioning

confidence: 99%

The scaling of electron and positron generation in intense laser-solid interactions

et al. 2015

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This paper presents experimental scalings of the electrons and positrons produced by intense laser-target interactions at relativistic laser intensities (1018–1020 W cm−2). The data were acquired from three short-pulse laser facilities with laser energies ranging from 80 to 1500 J. We found a non-linear (≈EL2) scaling of positron yield [Chen et al., Phys. Rev. Lett. 114, 215001 (2015)] and a linear scaling of electron yield with the laser energy. These scalings are explained by theoretical and numerical analyses. Positron acceleration by the target sheath field is confirmed by the positron energy spectrum, which has a pronounced peak at energies near the sheath potential, as determined by the observed maximum energies of accelerated protons. The parameters of laser-produced electron-positron jets are summarized together with the theoretical energy scaling. The measured energy-squared scaling of relativistic electron-positron jets indicates the possibility to create an astrophysically relevant experimental platform with such jets using multi-kilojoule high intensity lasers currently under construction.

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Section: Future Researchmentioning

confidence: 99%

The scaling of electron and positron generation in intense laser-solid interactions

et al. 2015

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“…Figure 6 shows a possible implementation of implosion transmission radiography on NIF using twin ARIANE detectors to record signals from two backlight sources separated by 200ps along with simulated radiographs assuming 20µm spatial resolution, 10ps temporal resolution, and expected noise. The backlighters will be produced by the NIF Advanced Radiographic Capability (ARC), a dedicated subset of beams that will have capability of generating intensities of 10 18 W/cm 2 [23]. A collimator will be used to isolate x-rays from each of the two backlight sources, and an ARIANE detector with a single-strip MCP will be located along each of the two lines of sight.…”

Section: Areal Density Measurements With Transmission Compton Radiogrmentioning

confidence: 99%

Advanced gated x-ray imagers for experiments at the National Ignition Facility

et al. 2011

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X-ray imaging is integral to the measurement of the properties of hot plasmas. To this end, a suite of gated x-ray imagers have been developed for use in a wide range of experiments at the National Ignition Facility (NIF). These instruments are sensitive to x-rays over the range of 0.7-90keV and can acquire images at 20ps intervals for source intensities ranging over several orders of magnitude. We review the design, technology, and construction of these instruments and present recent results obtained from NIF experiments in which gated x-ray imagers have played a key role.The radiation environment associated with Inertial Confinement Fusion (ICF) experiments presents unique challenges for x-ray imaging. We report on the performance of gated imagers that have been optimized for this harsh environment and describe diagnostics to be deployed in the near future that will provide x-ray images of imploding ICF capsules in the presence of backgrounds associated with neutron yields above 10 16 . Such images will provide crucial data that will enable even higher neutron yields and successful ignition.

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“…The longitudinal spatial shifts between the gratings of the independent compressors [6] avoid spectral coupling between gratings. In this scheme, the beam shaping (band gap without energy to avoid spectral coupling) is limited compared to mosaic gratings [12,13]. This beam shaping is only made to limit energy on the edge of the components.…”

Section: Specificitions For the Petal Schemementioning

confidence: 99%

Experimental demonstration of a synthetic aperture compression scheme for multi-Petawatt high-energy lasers

Blanchot¹,

Bar²,

Béhar³

et al. 2010

Opt. Express

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Progress on converting a NIF quad to eight, petawatt beams for advanced radiography

Cited by 70 publications

References 6 publications

The scaling of electron and positron generation in intense laser-solid interactions

The scaling of electron and positron generation in intense laser-solid interactions

Advanced gated x-ray imagers for experiments at the National Ignition Facility

Experimental demonstration of a synthetic aperture compression scheme for multi-Petawatt high-energy lasers

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