2005 Calendar

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    The building construction for the new OMEGA EP multipetawatt laser facility was recently completed. The laser system and target area for OMEGA EP will be housed in the 80 x 280 foot clean room shown in this photograph.

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    History

    An OMEGA direct-drive high-yield target attained the highest recorded neutron yield to date on a laser ICF experiment: 1.25 x 1014 (fusion energy release of 1.1% of the on-target laser energy).

    19 January 1996

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    Reliable operation of a high-energy laser facility such as OMEGA requires frequent detailed examination of critical optics such as this blast shield.

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    History

    The paper "Nonlinear Evolution of Ablation-Driven Rayleigh–Taylor Instability" by R. L. McCrory et al. appeared in Physical Review Letters. This work examined nonlinear aspects of Rayleigh–Taylor instability and showed that it was plausible to design successful moderate-aspect- ratio capsules.

    February 1981

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    OMEGA Target Chamber Area

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    History

    Congressman Frank J. Horton's weekly column issued on this day highlighted "...one of the most exciting and significant energy research centers in the Nation..." The present LLE facility and graduate student fellowships are named in his honor, in recognition of his important support.

    25 March 1975

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    The Saturn target design was developed by LLE and tested on OMEGA to explore the possibility of demonstrating ignition on the NIF using the polar-direct-drive (PDD) configuration. The capsule is mounted on a specifically designed ring by means of spider-silk strands.

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    History

    The development of spider-silk target mounting by Steve Noyes of LLE was published for the first time in an article in the Journal of Vacuum Science and Technology.

    April 1983

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    Optical image of the interior of the OMEGA target chamber during a shot carried out by Sandia National Laboratory to study the x-ray-drive characteristics of a copper-lined hohlraum.

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    History

    LLE conducted a series of DT implosion experiments on the six-beam ZETA laser with all shots producing yields in excess of 1.5 billion neutrons.

    22 May 1979

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    Two tiled-grating assemblies are aligned using a closed-loop control system. These compressors will be used to form petawatt pulses on the OMEGA EP laser.

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    History

    A paper describing the SSD beam-smoothing system by S. Skupsky et al. was accepted for publication by the Journal of Applied Physics. SSD has been a very important laser feature for both indirect- and direct-drive ICF experiments.

    October 1989

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    Visible camera image taken during an OMEGA experiment carried out for scientists from the Los Alamos National Laboratory.

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    History

    The Summer High School Student Program was initiated at LLE. Since its inception, 176 high school students have participated in this program. Of these, 16 (six within past two years) were chosen as semi-finalists in the prestigious Intel (formerly Westinghouse) Science Talent Search and two became finalists.

    July 1989

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    Technician working on a heat sink for the Cryogenic Target Handling System temperature sensor

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    History

    A paper entitled "Experimental Facility for Nanosecond Time- Resolved Low Angle X-Ray Diffraction Experiments Using a Laser-Produced Plasma Source" by J. M. Forsyth and R. D. Frankel appeared in the Review of Scientific Instruments. This project was one of the first to be carried out under the NLUF program.

    August 1984

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    Suspensions of polymer liquid crystal flakes (magnified 100x) in silicon oil can be microencapsulated within the body of a flexible polymer film to form electrically switchable conformal coatings. This new class of electro-optical materials is especially well suited for applications such as reflective flexible displays and switchable/tunable optical coatings.

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    History

    A paper entitled "Experimental Investigation of Smoothing by Spectral Dispersion" by S. P. Regan et al. was published. It reported on measurements of smoothing rates for smoothing by spectral dispersion (SSD) of high-power, solid-state laser beams used for inertial confinement fusion (ICF) research.

    September 2000

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    Fiber optic connector panel for the new OMEGA energy diagnostic system

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    History

    The paper "Laser Compression Studies with Neon-Filled Glass Microballoons" by B. Yaakobi and L. M. Goldman was published in Physical Review Letters. It presented measurements of x-ray emission of compressed neon gas fill in glass microballoons, irradiated by DELTA–an early LLE four-beam laser system.

    October 1976

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    Simulated isodensity plot of a Saturn target implosion designed for ignition experiments on the National Ignition Facility. The image shown here was taken from a hybrid 2-D SAGE/DRACO simulation just prior to peak thermonuclear burn.

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    History

    A workshop was held at LLE to discuss applications of ultrahigh-power lasers in areas beyond fusion. The assembled panel of experts concluded that there are important applications of these systems: chemistry, biology, equation- of-state studies, effects on materials, and high-energy- density physics.

    November 1979

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    Visible camera photograph of a gold-coated pointing target shot on OMEGA

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    History

    A paper authored by V. A. Smalyuk et al. and published in Physical Review Letters showed for the first time that 3-D broadband imprinted features exhibit saturated growth at amplitudes consistent with theoretical models.

    December 1998

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