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- W2023485364 abstract "OMEGA EP is a petawatt-class, Nd-doped phosphate glass laser system that can be operated in both 1053-nm, short-pulse(<1- to 100-ps) and 351-nm, long-pulse (1- to 10-ns) regimes. It was completed in FY08 and began user shots inFY09 during which 350 target shots were conducted for 30 principal investigators. As of the start of FY11, over1000 target shots have been performed. The beamline architecture consists of 40-cm, single-segment disk amplifiers in amultipass configuration to provide the necessary gain and resulting IR energy. For long-pulse operation, type-I/type-IIfrequency-conversion crystals are used to convert the 1053-nm fundamental wavelength to its third harmonic. Animportant operational goal of the Omega EP Laser Facility is to provide principal investigators with maximum UVenergy on target, while maintaining UV peak fluences within an acceptable margin for safe operation. To optimize thelong-pulse, on-target energy of OMEGA EP, we have pursued a threefold effort: (1) Improve the laser-induced damagethreshold of beam-transport optics; (2) improve the near-field beam profile; and (3) develop simulation tools to useduring shot operations that provide rapid prediction of laser-system performance. These simulation tools predict the UVnear-field beam-fluence distribution and on-target energy based on measurements of the inputs to the main amplifiersand are regularly used during shot operations. They have streamlined daily system qualification, making it possible forUV energy to be maximized within current system constraints." @default.
- W2023485364 created "2016-06-24" @default.
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- W2023485364 date "2011-02-10" @default.
- W2023485364 modified "2023-09-23" @default.
- W2023485364 title "Improvements to long-pulse system performance and operational efficiency on OMEGA EP" @default.
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- W2023485364 doi "https://doi.org/10.1117/12.875574" @default.
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