Abstract
The P3 installation of ELI-Beamlines is conceived as an experimental platform for multiple high-repetition-rate laser beams spanning time scales from femtosecond via picosecond to nanosecond. The upcoming L4n laser beamline will provide shaped nanosecond pulses of up to 1.9 kJ at a maximum repetition rate of 1 shot/min. This beamline will provide unique possibilities for high-pressure, high-energy-density physics, warm dense matter, and laser–plasma interaction experiments. Owing to the high repetition rate, it will become possible to obtain considerable improvements in data statistics, in particular, for equation-of-state data sets. The nanosecond beam will be coupled with short sub-picosecond pulses, providing high-resolution diagnostic tools by either irradiating a backlighter target or driving a betatron setup to generate energetic electrons and hard X-rays.
Highlights
INTRODUCTIONThe uniqueness of this kilojoule-class system relies on its ability to operate at a high repetition rate with the ultimate objective of providing up to 1 shot/ min
ELI-Beamlines is a part of the Extreme Light Infrastructure (ELI) project and will soon become one of the most powerful laser facilities in the world
Several conditions are required on the laser to enable the performance of high-energy-density physics experiments in a repetitive regime: the laser driver energy has to be reliable on a shot-to-shot basis, the intensity distribution over the focal spot should be as uniform as possible, and a very precise and reproducible pulse temporal profile is needed to control the pressure in the sample
Summary
The uniqueness of this kilojoule-class system relies on its ability to operate at a high repetition rate with the ultimate objective of providing up to 1 shot/ min. At the SLAC facility, the long-pulse system on the MEC platform can generate dynamically compressed matter to several megabars while probing it with bright X-ray free-electron laser (X-FEL) radiation.22 This will soon be possible at the HED instrument of. While recent studies have proved that it is possible to acquire shock velocity measurements with uncertainties lower than 1%,28 we present here an alternative solution with the L4n beamline, a long-pulse high-energy laser with unprecedented repetition-rate capacities.
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