Abstract
SG-III laser facility is now the largest laser driver for inertial confinement fusion research in China. The whole laser facility can deliver 180 kJ energy and 60 TW power ultraviolet laser onto target, with power balance better than 10%. We review the laser system and introduce the SG-III laser performance here.
Highlights
As one of the major approaches to achieve controllable fusion ignition, laser driven inertial confinement fusion (ICF) has been widely studied around the world[1,2,3,4]
This meaningful shot indicated that China had finished the engineering construction of the 100 kJ level ICF research platform and the SG-III laser facility established its world second output capability currently
We briefly review the laser system and introduce the SG-III laser performance in detail
Summary
As one of the major approaches to achieve controllable fusion ignition, laser driven inertial confinement fusion (ICF) has been widely studied around the world[1,2,3,4]. Several huge laser facilities have been constructed, such as the National Ignition Facility (NIF) in the United States[5], the laser megajoule (LMJ) in France[6] and the SG-III laser facility in China[7] These laser facilities are designed to provide timely tailored ultraviolet laser driving during as long as tens of nanoseconds, producing x-ray radiation in a hohlraum which compresses DT pellet to achieve fusion ignition[4]. The first shot in SG-III with its full output capability was conducted in 14 September 2015, in which shot the output 351 nm ultraviolet laser energy reached 181.3 kJ, exceeding its designed point for the first time This meaningful shot indicated that China had finished the engineering construction of the 100 kJ level ICF research platform and the SG-III laser facility established its world second output capability currently. The whole laser facility has met all the design requirements, such as the 180 kJ energy and 60 TW power ultraviolet output capability, 30 μm pointing precision, 10 ps synchronization level (root mean square (RMS) value), 10% power balance level (RMS value), pulse shaping capability and so on, which form solid foundations for deeper ICF researches in China
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