[China Instrument Network Instrument R&D] Recently, the “Shenguang” driver upgrade device developed by the Institute of High Power Laser Physics of the Shanghai Institute of Optics and Fine Mechanics under the Chinese Academy of Sciences passed comprehensive acceptance of the project.

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The upgrade device can output 8 total energy of 24kJ/3ns/3w nanoseconds and single beam 1kJ/1ps/1w picosecond laser, condensing our country in optics, electronics, precision machinery, precision machining, and materials science. Subjects in the "12th Five-Year" period of technological research results.
The device adopts the nanosecond laser overall technical scheme of "large aperture isolation + boost two-stage amplification + cavity four-way amplification + large aperture deformable mirror" and "optical parameter chirped pulse amplification + large aperture deformed mirror + large aperture grating compression "Plane-target coupled" picosecond laser overall technical solution. The self-developed driver simulation simulation design software has been verified and verified during the simulation and construction of the engineering design.
Developed a high-stability, high-quality nanosecond and picosecond front-end seed light source system; integrated verification of large-aperture isolation components, large-aperture deformable mirrors, and large-aperture gratings; realized laser near-field, far-field, and time waveforms for drivers The precise regulation.
During the trial period, a total of 430 physics experiments (2014-2016) were completed. The operation status was good and the success rate was better than 80%. The on-line assessment and rapid ignition decomposition and integration experiments of relevant physical diagnostic equipment were successfully completed. In the fast-firing integrated integration experiment, a neutron gain of more than 40 times was achieved, and the highest observed indirect-drive neutron yield was 9×105.
The completion acceptance of the “Shenguang” drive upgrade device indicates that the core technologies of the overall design, overall integration, unit development, precision assembly, and precision processing of high-power laser drivers in China have reached a new level and are capable of large-scale development. Laser driver development technology capabilities.
"Shenguang" driver upgrade device is the first physics experimental platform for inertial confinement fusion with the capability of long and short pulse output. It will lay an important experimental foundation for the research and development of fusion physics.
(Original title: "Shenguang" driver upgrade device through comprehensive acceptance)

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