2006 Calendar

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    OMEGA EP Target Chamber

    The target chamber for OMEGA EP is lowered into position within the OMEGA EP target structure. The chamber is matched in size to the OMEGA chamber with a diameter of 3.3 m.

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    OMEGA EP Target Chamber

    The target chamber for OMEGA EP is lowered into position within the OMEGA EP target structure. The chamber is matched in size to the OMEGA chamber with a diameter of 3.3 m.

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    Plasma-Electrode Pockels Cell (PEPC)

    Based on NIF technology and developed with the assistance of LLNL scientists, a high-contrast plasma-electrode Pockels cell (PEPC) was built and tested at LLE in 2005. Circumstances arising from OMEGA EP's short-pulse mission imposed a requirement for minimum switching contrast well beyond the performance achieved by any previously reported PEPC systems. In laboratory testing, the LLE PEPC reliably exceeds its minimum contrast requirement.

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    Plasma-Electrode Pockels Cell (PEPC)

    Based on NIF technology and developed with the assistance of LLNL scientists, a high-contrast plasma-electrode Pockels cell (PEPC) was built and tested at LLE in 2005. Circumstances arising from OMEGA EP's short-pulse mission imposed a requirement for minimum switching contrast well beyond the performance achieved by any previously reported PEPC systems. In laboratory testing, the LLE PEPC reliably exceeds its minimum contrast requirement.

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    OMEGA EP Tiled-Grating Assembly

    The coherent addition of multiple gratings to form a larger grating provides an alternative to meter-sized multilayer dielectic (MLD) gratings. This concept has been developed for the OMEGA EP grating compressors. Above, a LLE research engineer is aligning a full-size OMEGA EP tiled-grating assembly (TGA).

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    OMEGA EP Tiled-Grating Assembly

    The coherent addition of multiple gratings to form a larger grating provides an alternative to meter-sized multilayer dielectic (MLD) gratings. This concept has been developed for the OMEGA EP grating compressors.

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    OMEGA TVS-II Aspheric Mirror

    The OMEGA target viewing system (TVS-II) is being upgraded so that it can be used as an on-shot target diagnostic. A key feature of the new design is a 1.8-m, working-distance f/13 telescope that is external to the target chamber. The telescope consists of three mirrors (one spherical and two aspheric) fabricated at LLE on glass substrates. The largest mirror is 310 mm in diameter. Shown here is a 300-mm-diameter, fused-silica parent optic on LLE's Q22-Y MRF machine. When complete, two 150-mm-diameter segments will be core drilled, off-axis, from this parent.

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    OMEGA TVS-II Aspheric Mirror

    The OMEGA target viewing system (TVS-II) is being upgraded so that it can be used as an on-shot target diagnostic. A key feature of the new design is a 1.8-m, working-distance f/13 telescope that is external to the target chamber. The telescope consists of three mirrors (one spherical and two aspheric) fabricated at LLE on glass substrates. The largest mirror is 310 mm in diameter.

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    The Robert L. Sproull Center for Ultra High Intensity Research

    In May 2005, LLE dedicated the Robert L. Sproull Center for Ultra High Intensity Laser Research. This facility was named in honor of the University's seventh president and will house the OMEGA EP Laser System (interior of target chamber shown above). The Laboratory for Laser Energetics became a leading center for laser research under Dr. Sproull's leadership. Dr. Sproull firmly believed that LLE would become a venue for training future generations of scientists and researchers, as well as the world-class facility that it is today.

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    The Robert L. Sproull Center for Ultra High Intensity Research

    In May 2005, LLE dedicated the Robert L. Sproull Center for Ultra High Intensity Laser Research. This facility was named in honor of the University's seventh president and will house the OMEGA EP Laser System. The Laboratory for Laser Energetics became a leading center for laser research under Dr. Sproull's leadership. Dr. Sproull (shown above) firmly believed that LLE would become a venue for training future generations of scientists and researchers, as well as the world-class facility that it is today.

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    OMEGA Driver Lines

    At its front end, the OMEGA 60-beam UV laser has three independent laser drivers. Each of these systems (shown in the foreground) produces shaped seed pulses and delivers them to the stage-A splitter structure (large rectangular structure to the right).

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    OMEGA Driver Lines

    At its front end, the OMEGA 60-beam UV laser has three independent laser drivers. Each of these systems produces shaped seed pulses and delivers them to the stage-A splitter structure.

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    The ROSS

    The Rochester Optical Streak System (ROSS) is a comprehensive short-pulse diagnostic system with autofocusing and self-calibration capabilities. Eight prototype cameras have operated on OMEGA for six years. This system has been commercialized by Sydor Instruments, a Rochester-based firm specializing in novel measurement technology.

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    The ROSS

    The Rochester Optical Streak System (ROSS) is a comprehensive short-pulse diagnostic system with autofocusing and self-calibration capabilities. Eight prototype cameras have operated on OMEGA for six years. This system has been commercialized by Sydor Instruments, a Rochester-based firm specializing in novel measurement technology.

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    MRF

    Computerized numerically controlled (CNC) finishing of most optical materials was not possible until scientists from LLE, working in collaboration with the UR Center for Optics Manufacturing (COM) and industrial partners, invented, patented, and commercialized the magnetorheological finishing (MRF) process. A MRF system is shown grinding and polishing a laser rod for use in LLE's MTW system.

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    MRF

    Computerized numerically controlled (CNC) finishing of most optical materials was not possible until scientists from LLE, working in collaboration with the UR Center for Optics Manufacturing (COM) and industrial partners, invented, patented, and commercialized the magnetorheological finishing (MRF) process. A MRF system is shown grinding and polishing a laser rod for use in LLE's MTW system.

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    Simulation of an OMEGA Plasma Jet

    Plasma jets are generated with the OMEGA laser to study similar phenomena observed by astronomers and are simulated by astrophysical, hydrodynamic calculations. The upper half of this picture shows the propagation of the jet core material, and the lower half shows the structure in the ambient medium as the jet "pushes" through it.

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    Simulation of an OMEGA Plasma Jet

    Plasma jets are generated with the OMEGA laser to study similar phenomena observed by astronomers and are simulated by astrophysical, hydrodynamic calculations. The upper half of this picture shows the propagation of the jet core material, and the lower half shows the structure in the ambient medium as the jet "pushes" through it.

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    Saturn PDD Target

    Polar direct drive (PDD) has been developed by LLE as a potential means to achieve direct-drive ignition on the NIF in its initial indirect-drive (two-sided) irradiation configuration. The "Saturn" target shown above is a variation of the PDD approach that relies on a plastic ring surrounding the full capsule. Upon laser irradiation, the ring forms a low-density plasma that refracts laser light toward the capsule to optimize the drive uniformity for PDD targets.

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    Saturn PDD Target

    Polar direct drive (PDD) has been developed by LLE as a potential means to achieve direct-drive ignition on the NIF in its initial indirect-drive (two-sided) irradiation configuration. The "Saturn" target is a variation of the PDD approach that relies on a plastic ring surrounding the full capsule. Upon laser irradiation, the ring forms a low-density plasma that refracts laser light toward the capsule to optimize the drive uniformity for PDD targets.

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    Deformable Mirror Assembly

    The assembly of deformable mirrors is a joint project between LLE and LLNL. LLE is producing 196 deformable mirrors for use on the NIF. Each assembly includes 39 actuators sandwiched between a coated glass faceplate and a metal reaction block. As the system's wavefront control system detects beam aberrations, information is sent to the metal reaction block. The actuators push against the reaction block to move the faceplate mirror surface and correct errors in the beam.

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    Deformable Mirror Assembly

    The assembly of deformable mirrors is a joint project between LLE and LLNL. LLE is producing 196 deformable mirrors for use on the NIF. Each assembly includes 39 actuators sandwiched between a coated glass faceplate and a metal reaction block. As the system's wavefront control system detects beam aberrations, information is sent to the metal reaction block. The actuators push against the reaction block to move the faceplate mirror surface and correct errors in the beam.

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    Neutron Imaging of Cryogenic D2 Capsules

    Neutron images (inset) of cryogenic D2-filled imploded capsules were obtained on OMEGA for the first time in 2005 in a collaborative experiment with scientists from the Commissariat à l'Énergie Atomique (CEA), France. Above, an image taken of the OMEGA target chamber during a shot shows the plasma fireball created during a cryogenic capsule implosion.

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    Neutron Imaging of Cryogenic D2 Capsules

    Neutron images (inset) of cryogenic D2-filled imploded capsules were obtained on OMEGA for the first time in 2005 in a collaborative experiment with scientists from the Commissariat à l'Énergie Atomique (CEA), France.

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